Search This Blog

Tuesday, October 25, 2022

Interfaith dialogue

From Wikipedia, the free encyclopedia

Left to right: George Carey, Archbishop of Canterbury (1991–2002); Jonathan Sacks, Chief Rabbi (UK); Mustafa Cerić, Grand Mufti of Bosnia; Jim Wallis, Sojourners, USA. 2009 World Economic Forum in Davos, Switzerland.
 
Roadside sign in the Nubra Valley, Ladkah, India

Interfaith dialogue refers to cooperative, constructive, and positive interaction between people of different religious traditions (i.e. "faiths") and/or spiritual or humanistic beliefs, at both the individual and institutional levels. It is distinct from syncretism or alternative religion, in that dialogue often involves promoting understanding between different religions or beliefs to increase acceptance of others, rather than to synthesize new beliefs.

The Archdiocese of Chicago's Office for Ecumenical and Interreligious Affairs defines "the difference between ecumenical, interfaith, and interreligious relations", as follows:

  • "ecumenical" as "relations and prayer with other Christians",
  • "interfaith" as "relations with members of the 'Abrahamic faiths' (Jewish, Muslim and Christian traditions)," and
  • "interreligious" as "relations with other religions, such as Hinduism and Buddhism".

Some interfaith dialogues have more recently adopted the name interbelief dialogue, while other proponents have proposed the term interpath dialogue, to avoid implicitly excluding atheists, agnostics, humanists, and others with no religious faith but with ethical or philosophical beliefs, as well as to be more accurate concerning many world religions that do not place the same emphasis on "faith" as do some Western religions. Similarly, pluralistic rationalist groups have hosted public reasoning dialogues to transcend all worldviews (whether religious, cultural or political), termed transbelief dialogue. To some, the term interreligious dialogue has the same meaning as interfaith dialogue. Neither are the same as nondenominational Christianity. The World Council of Churches states: “Following the lead of the Roman Catholic Church, other churches and Christian religious organizations, such as the World Council of Churches, have increasingly opted to use the word interreligious rather than interfaith to describe their own bilateral and multilateral dialogue and engagement with other religions. [...] the term interreligious is preferred because we are referring explicitly to dialogue with those professing religions – who identify themselves explicitly with a religious tradition and whose work has a specific religious affiliation and is based on religious foundations."

Throughout the world there are local, regional, national and international interfaith initiatives; many are formally or informally linked and constitute larger networks or federations. The often quoted "There will be no peace among the nations without peace among the religions. There will be no peace among the religions without dialogue among the religions" was formulated by Hans Küng, a Professor of Ecumenical Theology and President of the Global Ethic Foundation. Interfaith dialogue forms a major role in the study of religion and peacebuilding.

History

History records examples of interfaith initiatives throughout the ages, with varying levels of success in establishing one of three types of "dialogue" to engender, as recently described, either understanding, teamwork, or tolerance:

  1. "In the dialogue of the head, we mentally reach out to the other to learn from those who think differently from us."
  2. "In the dialogue of the hands, we all work together to make the world a better place in which we must all live together."
  3. "In the dialogue of the heart, we share the experience of the emotions of those different from us."

The historical effectiveness of interfaith dialogue is an issue of debate. Friar James L. Heft, in a lecture on "The Necessity of Inter-Faith Diplomacy," spoke about the conflicts among practitioners of the three Abrahamic religions (Judaism, Christianity and Islam). Noting that except for the Convivencia in the 14th and 15th centuries, believers in these religions have either kept their distance or have been in conflict, Heft maintains, "there has been very little genuine dialogue" between them. "The sad reality has been that most of the time Jews, Muslims and Christians have remained ignorant about each other, or worse, especially in the case of Christians and Muslims, attacked each other."

In contrast, The Pluralism Project at Harvard University says, "Every religious tradition has grown through the ages in dialogue and historical interaction with others. Christians, Jews, and Muslims have been part of one another's histories, have shared not only villages and cities, but ideas of God and divine revelation."

The importance of Abrahamic interfaith dialogue in the present has been bluntly presented: "We human beings today face a stark choice: dialogue or death!"

More broadly, interfaith dialogue and action have occurred over many centuries:

  • In the 16th century, the Emperor Akbar encouraged tolerance in Mughal India, a diverse nation with people of various faith backgrounds, including Islam, Hinduism, Sikhism, and Christianity.
  • Religious pluralism can also be observed in other historical contexts, including Muslim Spain. Zarmanochegas (Zarmarus) (Ζαρμανοχηγὰς) was a monk of the Sramana tradition (possibly, but not necessarily a Buddhist) from India who journeyed to Antioch and Athens while Augustus (died 14 CE) was ruling the Roman Emprire.
  • "Disputation of Barcelona – religious disputation between Jews and Christians in 1263. The apostate Paulus [Pablo] Christiani proposed to King James I of Aragon that a formal public religious disputation on the fundamentals of faith should be held between him and R. Moses b. Nahman (Nachmanides) whom he had already encountered in Gerona. The disputation took place with the support of the ecclesiastical authorities and the generals of the Dominican and Franciscan orders, while the king presided over a number of sessions and took an active part in the disputation. The Dominicans Raymond de Peñaforte, Raymond Martini, and Arnold de Segarra, and the general of the Franciscan order in the kingdom, Peter de Janua, were among the Christian disputants. The single representative for the Jewish side was Naḥmanides. The four sessions of the disputation took place on July 20, 27, 30, and 31, 1263 (according to another calculation, July 20, 23, 26, and 27). Naḥmanides was guaranteed complete freedom of speech in the debate; he took full advantage of the opportunity thus afforded and spoke with remarkable frankness. Two accounts of the disputation, one in Hebrew written by Naḥmanides and a shorter one in Latin, are the main sources for the history of this important episode in Judeo-Christian polemics. According to both sources the initiative for the disputation and its agenda were imposed by the Christian side, although the Hebrew account tries to suggest a greater involvement of Naḥmanides in finalizing the items to be discussed. When the ecclesiastics who saw the "not right" turn the disputation was taking, due to Nahmanides persuasive argumentation, they urged that it should be ended as speedily as possible. It was, therefore, never formally concluded, but interrupted. According to the Latin record of the proceedings, the disputation ended because Nahmanides fled prematurely from the city. In fact, however, he stayed on in Barcelona for over a week after the disputation had been suspended in order to be present in the synagogue on the following Sabbath when a conversionist sermon was to be delivered. The king himself attended the synagogue and gave an address, an event without medieval precedent. Nahmanides was permitted to reply on this occasion. The following day, after receipt of a gift of 300 sólidos from the king, he returned home."
"While the Disputation may have been a great achievement for Paulus Christiani in his innovative use of rabbinic sources in Christian missionary efforts, for Naḥmanides it represented an additional example of the wise and courageous leadership which he offered his people."

19th-century initiatives

20th-century initiatives

  • In 1900, the International Association for Religious Freedom (IARF) was founded under a name different from its current one. In 1987, its statement of purpose was revised to include advancing "understanding, dialogue and readiness to learn and promotes sympathy and harmony among the different religious traditions". In 1990, its membership was enlarged "to include all the world's major religious groups". In 1996, IARF's World Congress included representatives of Palestinian and Israeli IARF groups and Muslim participants made presentations.
  • In December 1914, just after World War I began, a group of Christians gathered in Cambridge, England to found the Fellowship of Reconciliation (FOR) "in hopes of bringing people of faith together to promote peace, and it went on to become a leading interfaith voice for non-violence and non-discrimination". It has branches and affiliated groups in over 50 countries on every continent. The membership includes "Jews, Christians, Buddhists, Muslims, Indigenous religious practitioners, Baháʼí, and people of other faith traditions, as well as those with no formal religious affiliation".
  • In 1936, the World Congress of Faiths (WCF) formed in London. It is "one of the oldest interfaith bodies in the world". One of its purposes is to bring "people of faith together to enrich their understandings of their own and others' traditions". It does this by offering opportunities "to meet, explore, challenge and understand different faith traditions through events from small workshops to large conferences, partnership working, online conversation, and publications".
  • In 1949, following the devastation of World War II, the Fellowship In Prayer was founded in 1949 by Carl Allison Evans and Kathryn Brown. Evans believed that unified prayer would "bridge theological or structural religious differences," would "open the mind and heart of the prayer to a new understanding of and appreciation for the beliefs and values of those following different spiritual paths," and would "advance interfaith understanding and mutual respect among religious traditions,"
  • In 1952, the International Humanist and Ethical Union (IHEU) was founded in Amsterdam. It serves as "the sole world umbrella organisation embracing Humanist, atheist, rationalist, secularist, skeptic, laique, ethical cultural, freethought and similar organisations world-wide". IHEU's "vision is a Humanist world; a world in which human rights are respected and everyone is able to live a life of dignity". It implements its vision by seeking "to influence international policy through representation and information, to build the humanist network, and let the world know about the worldview of Humanism".
  • In 1958, the Center for the Study of World Religions (CSWR) at Harvard Divinity School (HDS) began. Since then, it "has been at the forefront of promoting the sympathetic study and understanding of world religions. It has supported academic inquiry and international understanding in this field through its residential community," and "its research efforts and funding, and its public programs and publications".
  • In 1960, Juliet Hollister (1916–2000) created the Temple of Understanding (TOU) to provide "interfaith education" with the purpose of "breaking down prejudicial boundaries". The Temple of Understanding "over several years hosted meetings that paved the way for the North American Interfaith Network (NAIN)".
  • In the late 1960s, interfaith groups such as the Clergy And Laity Concerned (CALC) joined around Civil Rights issues for African-Americans and later were often vocal in their opposition to the Vietnam War.
  • In 1965, "about 100 Protestant, Catholic, and Jewish clergy" formed Clergy Concerned about Vietnam (CCAV). Its purpose was "to challenge U.S. policy on Vietnam". When the group admitted laity, it renamed itself National Emergency Committee of Clergy and Laymen Concerned about Vietnam (CALCAV) In 1967, Martin Luther King Jr. used its platform for his "Beyond Vietnam" speech. Later, CALCAV addressed other issues of social justice issues and changed its name to become simply Clergy and Laymen Concerned (CALC).
  • In 1965, during Vatican II, it was decided that relations with all religions should be developed. To do this, Pope Paul VI established a special secretariat (later a pontifical council) for relationships with non-Christians. The papal encyclical Ecclesiam Suam emphasized the importance of positive encounter between Christians and people of other faith traditions. The Declaration on the Relationship of the Church to Non-Christian Religions (Nostra Aetate) of 1965, spelled out the pastoral dimensions of this relationship.
  • In 1967, the World Council of Churches conference "proved to be a landmark both as the beginning of serious interest in interfaith dialogue as such in the WCC, and as the first involvement in the ecumenical discussion of the Vatican Secretariat for Non-Christians".
  • In 1970, the first World Conference of Religions for Peace was held in Kyoto, Japan. Religions for Peace is "the world's largest and most representative multi-religious coalition advancing common action for peace". Its work includes "dialogue" that "bears fruit in common concrete action". Through the organization, diverse religious communities discern "deeply held and widely shared" moral concerns, such as, "transforming violent conflict, promoting just and harmonious societies, advancing human development and protecting the earth".
  • In 1978, the Interfaith Conference of Metropolitan Washington (IFC) was formed. "The IFC brings together eleven historic faith communities to promote dialogue, understanding and a sense of community and to work cooperatively for justice throughout the District of Columbia region." Members include the Baháʼí Faith, Buddhist, Hindu, Islamic, Jain, Jewish, Latter-day Saints, Protestant, Roman Catholic, Sikh and Zoroastrian faith communities.
  • In 1981, Minhaj-ul-Quran was founded. It is "a Pakistan-based international organization working to promote peace, tolerance, interfaith harmony and education, tackle extremism and terrorism, engage with young Muslims for religious moderation, promote women's rights, development and empowerment, and provide social welfare and promotion of human rights". Minhaj-ul-Quran offers free download of books.
  • On October 27, 1986 Pope John Paul II had a day of prayer at Assisi and invited "about fifty Christians and fifty leaders of other faiths". In his book One Christ–Many Religions, S. J. Samartha says that the importance of that day of prayer for "interreligious relationships cannot be overestimated" and gives "several reasons" for its importance:
  1. "It conferred legitimacy to Christian initiatives in interreligious dialogues."
  2. "It was seen as an event of theological significance."
  3. "Assisi was recognized as an act of dialogue in the highest degree."
  4. "It emphasized the religious nature of peace."
However, Samartha added, two points caused "disquiet" to people of faiths other than Christian:
  1. The Pope's insistence on Christ as the only source of peace.
  2. For the prayers Christians were taken to one place and people of other faiths to another place.
Besides, the disquiet caused by the Pope's day of prayer, there is an ongoing "suspicion" by "neighbors of other faiths" that "dialogues may be used for purposes of Christian mission".
  • In 1991, Harvard University's Diana L. Eck launched the Pluralism Project by teaching a course on "World Religions in New England," in which students explored the "diverse religious communities in the Boston area". This project was expanded to charting "the development of interfaith efforts throughout the United States" and then the world. The Pluralism Project posts the information on the Pluralism Project website.
  • In 1993, on the centennial of its first conference, the Council for a Parliament of the World's Religions hosted a conference in Chicago with 8,000 participants from faith backgrounds around the world. "The Parliament is the oldest, the largest, and the most inclusive gathering of people of all faith and traditions." The organization hosts meetings around the world every few years. Its 2015 conference decided to hold meetings every two years.
  • In 1994, the Interfaith Alliance was created "to celebrate religious freedom and to challenge the bigotry and hatred arising from religious and political extremism infiltrating American politics". As of 2016, the Interfaith Alliance has 185,000 members across the country made up of 75 faith traditions as well as those of no faith tradition. The Interfaith Alliance works to (1) "respect the inherent rights of all individuals–as well as their differences", (2) "promote policies that protect vital boundaries between religion and government", and (3) "unite diverse voices to challenge extremism and build common ground".
  • In 1995, the Interfaith Center at the Presidio was founded with "a multi-faith Board". The Center is a San Francisco Bay Area "interfaith friendship-building" that welcomes "people of all faiths". The Center is committed to "healing and peacemaking within, between, and among religious and spiritual traditions".
  • In 1996, the Center for Interfaith Relations in Louisville, Kentucky established the Festival of Faiths, a multi-day event that promotes interfaith understanding, cooperation and action.
  • In 1996, Kim Bobo founded the Interfaith Worker Justice (IWJ) organization. Today IWJ includes a national network of more than 70 local interfaith groups, worker centers and student groups, making it the leading national organization working to strengthen the religious community's involvement in issues of workplace justice.
  • In 1998, the Muslim Christian Dialogue Forum was formed "to promote religious tolerance between Muslims and Christians so that they could work for the promotion of peace, human rights, and democracy". On December 8, 2015, the Forum sponsored a seminar on the subject of "Peace on Earth" at the Forman Christian College. The purpose was to bring the Muslim and Christian communities together to defeat "terrorism and extremism".
  • In 1998, Interfaith Power & Light (IPL) began as a project of the Episcopal Church's Grace Cathedral, San Francisco, California. Building on its initial success, the IPL model has "been adopted by 40 state affiliates", and IPL is "working to establish Interfaith Power & Light programs in every state". Ecological sustainability is central to IPL's "faith-based activism". The organization's work is reported in its Fact Sheet and 1915 Annual Report.
  • In 1999, The Rumi Forum (RF) was founded by the Turkish Hizmet [Service to Humanity] Movement. RF's mission is "to foster intercultural dialogue, stimulate thinking and exchange of opinions on supporting and fostering democracy and peace and to provide a common platform for education and information exchange". In particular, the Forum is interested in "pluralism, peace building and conflict resolution, intercultural and interfaith dialogue, social harmony and justice, civil rights and community cohesion".

21st-century initiatives

  • In 2000, the United Religions Initiative (URI) was founded "to promote enduring, daily interfaith cooperation, to end religiously motivated violence and to create cultures of peace, justice and healing for the Earth and all living beings". It now claims "more than 790 member groups and organizations, called Cooperation Circles, to engage in community action such as conflict resolution and reconciliation, environmental sustainability, education, women's and youth programs, and advocacy for human rights".
  • In 2001, after the September 11 attacks, "interfaith relations proliferated". "Conversations about the urgency of interfaith dialogue and the need to be knowledgeable about the faith of others gained traction in new ways."
  • In 2001, the Children of Abraham Institute ("CHAI") was founded "to articulate the 'hermeneutics of peace' ... that might be applied to bringing Jewish, Muslim, and Christian religious, social, and political leaders into shared study not only of the texts of Scripture but also of the paths and actions of peace that those texts demand".
  • In 2001, the Interfaith Encounter Association (IEA) was established in Israel. Its impetus dates from the late 1950s in Israel when a group of visionaries (which included Martin Buber) recognised the need for interfaith dialogue. IEA is dedicated to promoting "coexistence in the Middle East through cross-cultural study and inter-religious dialogue". It forms and maintains "on-going interfaith encounter groups, or centers, that bring together neighboring communities across the country. Each center is led by an interfaith coordinating team with one person for each community in the area."
  • In 2002 the Messiah Foundation International was formed as "an interfaith, non-religious, spiritual organisation". The organisation comprises "people belonging to various religions and faiths" who "strive to bring about widespread divine love and global peace".
  • In 2002, the World Council of Religious Leaders (WCRL) was launched in Bangkok. It is "an independent body" that brings religious resources to support the work of the United Nations and its agencies around the world, nation states and other international organizations, in the "quest for peace". It offers "the collective wisdom and resources of the faith traditions toward the resolution of critical global problems". The WCRL is not a part of the United Nations.
  • In 2002, Eboo Patel, a Muslim, started the Interfaith Youth Core (IFYC) with a Jewish friend and an evangelical Christian staff worker. The IYYC was started to bring students of different religions "together not just to talk, but to work together to feed the hungry, tutor children or build housing". The IFYC builds religious pluralism by "respect for people's diverse religious and non-religious identities" and "common action for the common good".
  • In 2003, the Jordanian Interfaith Coexistence Research Center (JICRC) was founded by The Very Reverend Father Nabil Haddad. It "focuses on grassroots interfaith dialogue and coexistence". JICRC provides "advice to government and non-government organizations and individual decision makers regarding questions of inter-religious understanding" and "participates in interfaith efforts on the local, regional, and international levels".
  • In 2006, the Coexist Foundation was established. Its mission is "to advance social cohesion through education and innovation" and "to strengthen the bond that holds a society together through a sustainable model of people working and learning together" in order to reduce "prejudice, hate and violence".
  • In 2007, the Greater Kansas City Festival of Faiths put on its first festival. The festival's goals include: increased participation in interfaith experience and fostering dialogue. Festivals include dramatic events and speakers to "expand interaction and appreciation for different worldviews and religious traditions" One-third of the attendees are 'first-timers' to any interfaith activity.
  • On October 13, 2007 Muslims expanded their message. In A Common Word Between Us and You, 138 Muslim scholars, clerics and intellectuals unanimously came together for the first time since the days of the Prophet[s] to declare the common ground between Christianity and Islam.
  • In 2007, the biennial interfaith Insight Film Festival began. It encourages "filmmakers throughout the world to make films about 'faith'". The Festival invites "participants from all faith backgrounds" as a way contributing "to understanding, respect and community cohesion".
  • In 2008, Rabbi Shlomo Riskin established the Center for Jewish-Christian Understanding and Cooperation (CJCUC). The center was founded to "begin a theological dialogue" between Jews and Christians with the belief that in dialogue the two faiths will "find far more which unites" them than divides them. The center, currently located at the Bible Lands Museum in Jerusalem, engages in Hebraic Bible Study for Christians, from both the local community and from abroad, has organized numerous interfaith praise initiatives, such as Day to Praise, and has established many fund-raising initiatives such as Blessing Bethlehem which aim to aid the persecuted Christian community of Bethlehem, in part, and the larger persecuted Christian community of the Middle East region and throughout the world.
  • In 2008, through the collaboration of the Hebrew Union College, Omar Ibn Al-Khattab Foundation, and the University of Southern California, the Center for Muslim-Jewish Engagement was created. The Center was "inspired by USC President Steven B. Sample's vision of increasing collaboration between neighboring institutions in order to benefit both the university and the surrounding community". Its mission is "to promote dialogue, understanding and grassroots, congregational and academic partnerships among the oldest and the newest of the Abrahamic faiths while generating a contemporary understanding in this understudied area and creating new tools for interfaith communities locally, nationally and beyond."
  • July 2008 – A historic interfaith dialogue conference was initiated by King Abdullah of Saudi Arabia to solve world problems through concord instead of conflict. The conference was attended by religious leaders of different faiths such as Christianity, Judaism, Buddhism, Hinduism, and Taoism and was hosted by King Juan Carlos of Spain in Madrid.
  • January 2009, at Gujarat's Mahuva, the Dalai Lama inaugurated an interfaith "World Religions-Dialogue and Symphony" conference convened by Hindu preacher Morari Bapu from January 6 to 11, 2009. This conference explored ways and means to deal with the discord among major religions, according to Morari Bapu. Participants included Prof. Samdhong Rinpoche on Buddhism, Diwan Saiyad Zainul Abedin Ali Sahib (Ajmer Sharif) on Islam, Dr. Prabalkant Dutt on non-Catholic Christianity, Swami Jayendra Saraswathi on Hinduism and Dastur Dr. Peshtan Hormazadiar Mirza on Zoroastrianism.
  • In 2009, the Vancouver School of Theology opened the Iona Pacific Inter-religious Centre. The Centre "models dialogical, constructive, and innovative research, learning and social engagement". The Centre operates under the leadership of Principal and Dean, Dr. Wendy Fletcher, and Director, Rabbi Dr. Robert Daum.
  • In 2009, the Charter for Compassion was unveiled to the world. The Charter was inspired by Karen Armstrong when she received the 2008 TED Prize. She made a wish that the TED community would "help create, launch, and propagate a Charter for Compassion". After the contribution of thousands of people the Charter was compiled and presented. Charter for Compassion International serves as "an umbrella for people to engage in collaborative partnerships worldwide" by "concrete, practical actions".
  • In 2009, Council of Interfaith Communities (CIC) was incorporated in Washington, District of Columbia. It mission was "to be the administrative and ecclesiastical home for independent interfaith/multifaith churches, congregations and seminaries in the USA" and to honor "Interfaith as a spiritual expression". The CIC is one component of the World Council of Interfaith Communities.
  • In 2010, Interfaith Partners of South Carolina was formed. It was the first South Carolina statewide diversity interfaith organization.
  • In 2010, Project Interfaith began its work. 35 volunteers began recording interviews with people in Omaha, Nebraska. Working in pairs, the volunteers were paired up and given a Flip Video camera to record the interviews. The interviewees were asked three questions: (1) "How do you identify yourself spiritually and why?," (2) "What is a stereotype that impacts you based on your religious and spiritual identity?," and (3) "How welcoming do you find our community for your religious or spiritual path?" The recorded interviews were posted on social media sites, like Facebook, Twitter, Flickr, and YouTube. Project Interfaith terminated in 2015.
  • In 2010, the Interfaith Center for Sustainable Development (ICSD) was established. ICSD is the largest interfaith environmental organization in the Middle East. Its work is bringing together "faith groups, religious leaders, and teachers to promote peace and sustainability".
  • In 2011, President Obama issued the Interfaith and Community Service Campus Challenge by sending a letter to all presidents of institutions of higher education in the United States. The goals of the Challenge included maximizing "the education contributions of community-based organizations, including faith and interfaith organizations". By 2015, more than 400 institutions of higher education had responded to the Challenge. In the 2015 Annual President's Interfaith and Community Service Campus Challenge Gathering, international participants were hosted for the first time.
  • In 2012, the King Abdullah bin Abdulaziz International Centre for Interreligious and Intercultural Dialogue (KAICIID) opened in Vienna, Austria. The board of directors included Jews, Christians, and Muslims. A rabbi on the board said that "the prime purpose is to empower the active work of those in the field, whether in the field of dialogue, of social activism or of conflict resolution". A Muslim member of the board said that "the aim is to promote acceptance of other cultures, moderation and tolerance". According to KAICIID officials, "the center is independent and would not be promoting any one religion".
  • In February 2016, the International Partnership on Religion and Sustainable Development (PaRD) was launched at the ‘Partners for Change’ conference in Berlin. The network connects government bodies, faith-based organisations and civil-society agencies from around the world to encourage communication on religion and sustainable development.
  • In 2016, the National Catholic Muslim Dialogue (NCMD) was established in the United States. This is a joint venture between the United States Conference of Catholic Bishops (USCCB), the Islamic Society of North America, the Islamic Circle of North America, Islamic Shura Council of Southern California, and the Islamic Educational Center of Orange County. The NCMD was an outgrowth of longstanding regional dialogues in the United States co-sponsored by the USCCB and their regional partners.
  • In February 2017, Sister Lucy Kurien, founder of Maher NGO, founded the Interfaith Association for Service to Humanity and Nature in Pune, India. She defines interfaith spirituality as, "We respect and love all religions. We never put down anyone’s religion, or uphold one religion to the exclusion of others. What we want is to believe and respect interfaith religion, inclusive of all faith traditions. In our community spiritual practices, we invoke our prayers to the Divine, rather than invoking any particular name or form of God to the exclusion of others." As of October 2017, this new community has 198 members from 8 countries.

The United States Institute of Peace published works on interfaith dialogue and peacebuilding including a Special Report on Evaluating Interfaith Dialogue

Religious intolerance persists
The above section recounts a "long history of interfaith dialogue". However, a 2014 article in The Huffington Post said that "religious intolerance is still a concern that threatens to undermine the hard work of devoted activists over the decades". Nevertheless, the article expressed hope that continuing "interfaith dialogue can change this".

Policies of religions

A PhD thesis Dialogue Between Christians, Jews and Muslims argues that "the paramount need is for barriers against non-defensive dialogue conversations between Christians, Jews, and Muslims to be dismantled to facilitate development of common understandings on matters that are deeply divisive". As of 2012, the thesis says that this has not been done.

Baháʼí Faith

Interfaith and multi-faith interactivity is integral to the teachings of the Baháʼí Faith. Its founder Bahá'u'lláh enjoined his followers to "consort with the followers of all religions in a spirit of friendliness and fellowship". Baháʼís are often at the forefront of local inter-faith activities and efforts. Through the Baháʼí International Community agency, the Baháʼís also participate at a global level in inter-religious dialogue both through and outside of the United Nations processes.

In 2002 the Universal House of Justice, the global governing body of the Baháʼís, issued a letter to the religious leadership of all faiths in which it identified religious prejudice as one of the last remaining "isms" to be overcome, enjoining such leaders to unite in an effort to root out extreme and divisive religious intolerance.

Buddhism

Buddhism has historically been open to other religions. Ven. Dr. K. Sri Dhammananda stated:

"Buddhism is a religion which teaches people to 'live and let live'. In the history of the world, there is no evidence to show that Buddhists have interfered or done any damage to any other religion in any part of the world for the purpose of introducing their religion. Buddhists do not regard the existence of other religions as a hindrance to worldly progress and peace."

The fourteenth century Zen master Gasan Joseki indicated that the Gospels were written by an enlightened being:

"And why take ye thought for raiment? Consider the lilies of the field, how they grow. They toil not, neither do they spin, and yet I say unto you that even Solomon in all his glory was not arrayed like one of these... Take therefore no thought for the morrow, for the morrow shall take thought for the things of itself."
Gasan said: "Whoever uttered those words I consider an enlightened man."

The 14th Dalai Lama has done a great deal of interfaith work throughout his life. He believes that the "common aim of all religions, an aim that everyone must try to find, is to foster tolerance, altruism and love". He met with Pope Paul VI at the Vatican in 1973. He met with Pope John Paul II in 1980 and also later in 1982, 1986, 1988, 1990, and 2003. During 1990, he met in Dharamsala with a delegation of Jewish teachers for an extensive interfaith dialogue. He has since visited Israel three times and met during 2006 with the Chief Rabbi of Israel. In 2006, he met privately with Pope Benedict XVI. He has also met the late Archbishop of Canterbury Dr. Robert Runcie, and other leaders of the Anglican Church in London, Gordon B. Hinckley, late President of the Church of Jesus Christ of Latter-day Saints (Mormons), as well as senior Eastern Orthodox Church, Muslim, Hindu, Jewish, and Sikh officials.

In 2010, the Dalai Lama was joined by Rev. Katharine Jefferts Schori, presiding bishop of the Episcopal Church, Chief Rabbi Lord Jonathan Sacks of the United Hebrew Congregations of the Commonwealth, and Islamic scholar Professor Seyyed Hossein Nasr of George Washington University when Emory University's Center for the Study of Law and Religion hosted a "Summit on Happiness".

Christianity

Traditional Christian doctrine is Christocentric, meaning that Christ is held to be the sole full and true revelation of the will of God for humanity. In a Christocentric view, the elements of truth in other religions are understood in relation to the fullness of truth found in Christ. God is nevertheless understood to be free of human constructions. Therefore, God the Holy Spirit is understood as the power who guides non-Christians in their search for truth, which is held to be a search for the mind of Christ, even if "anonymously," in the phrase of Catholic theologian Karl Rahner. For those who support this view, anonymous Christians belong to Christ now and forever and lead a life fit for Jesus' commandment to love, even though they never explicitly understand the meaning of their life in Christian terms.

While the conciliar document Nostra aetate has fostered widespread dialogue, the declaration Dominus Iesus nevertheless reaffirms the centrality of the person of Jesus Christ in the spiritual and cultural identity of Christians, rejecting various forms of syncretism.

Pope John Paul II was a major advocate of interfaith dialogue, promoting meetings in Assisi in the 1980s. Pope Benedict XVI took a more moderate and cautious approach, stressing the need for intercultural dialogue, but reasserting Christian theological identity in the revelation of Jesus of Nazareth in a book published with Marcello Pera in 2004. In 2013, Pope Francis became the first Catholic leader to call for "sincere and rigorous" interbelief dialogue with atheists, both to counter the assertion that Christianity is necessarily an "expression of darkness of superstition that is opposed to the light of reason," and to assert that "dialogue is not a secondary accessory of the existence of the believer" but instead is a "profound and indispensable expression ... [of] faith [that] is not intransigent, but grows in coexistence that respects the other."

In traditional Christian doctrine, the value of inter-religious dialogue had been confined to acts of love and understanding toward others either as anonymous Christians or as potential converts.

In mainline Protestant traditions, however, as well as in the emerging church, these doctrinal constraints have largely been cast off. Many theologians, pastors, and lay people from these traditions do not hold to uniquely Christocentric understandings of how God was in Christ. They engage deeply in interfaith dialogue as learners, not converters, and desire to celebrate as fully as possible the many paths to God.

Much focus in Christian interfaith dialogue has been put on Christian–Jewish reconciliation. One of the oldest successful dialogues between Jews and Christians has been taking place in Mobile, Alabama. It began in the wake of the call of the Second Vatican Council (1962–1965) of the Roman Catholic Church for increased understanding between Christians and Jews. The organization has recently moved its center of activity to Spring Hill College, a Catholic Jesuit institution of higher learning located in Mobile. Reconciliation has been successful on many levels, but has been somewhat complicated by the Arab-Israeli conflict in the Middle East, where a significant minority of Arabs are Christian.

Judaism

The Modern Orthodox movement allows narrow exchanges on social issues, while warning to be cautious in discussion of doctrine. Reform Judaism, Reconstructionist Judaism and Conservative Judaism encourage interfaith dialogue.

Building positive relations between Jews and members of other religious communities has been an integral component of Reform Judaism's "DNA" since the movement was founded in Germany during the early 19th century, according to Rabbi A. James Rudin. It began with Israel Jacobson, a layman and pioneer in the development of what emerged as Reform Judaism, who established an innovative religious school in Sessen, Germany in 1801 that initially had 40 Jewish and 20 Christian students. "Jacobson's innovation of a 'mixed' student body reflected his hopes for a radiant future between Jews and Christians."

Moravian born Rabbi Isaac Mayer Wise, who founded the Reform movement in the United States, sought close relations with Christian church leaders. To that end, he published a series of lectures in 1883 entitled "Judaism and Christianity: Their Agreements and Disagreements". Wise emphasized what he believed linked the two religions in an inextricable theological and human bond: the biblical "Sinaitic revelation" as "... the acknowledged law of God". Rabbi Leo Baeck, the leader of the German Jewish community who survived his incarceration in the Terezin concentration camp, offered these words in his 1949 presidential address to the World Union for Progressive Judaism in London: "...as in a great period of the Middle Ages, [Jews and Muslims] are ...almost compelled to face each other... not only in the sphere of policy [the State of Israel in the Middle East], but also in the sphere of religion; there is the great hope... they will ...meet each other on joint roads, in joint tasks, in joint confidences in the future. There is the great hope that Judaism can thus become the builder of a bridge, the 'pontifex' between East and West."

In the 1950s and 60s, as interfaith civic partnerships between Jews and Christians in the United States became more numerous, especially in the suburbs, the Union of American Hebrew Congregations (now the Union for Reform Judaism, URJ) created a department mainly to promote positive Christian-Jewish relations and civic partnerships. Interfaith relations have since been expanded to include Muslims, Hindus, Buddhists, and members of other faith communities.

In 2013, Rabbi Marc Schneier and Imam Shamsi Ali coauthored a book Sons of Abraham: A Candid Conversation about the Issues That Divide and Unite Jews and Muslims. Schneier and Ali write about the importance of civil interfaith discussions. Based on their experience, Schneier and Ali believe that other "Jews and Muslims can realize that they are actually more united than divided in their core beliefs".

Interests in interfaith relations require an awareness of the range of Jewish views on such subjects as mission and the holy land.

Islam

Islam has long encouraged dialogue to reach truth. Dialogue is particularly encouraged amongst the People of the Book (Jews, Christians and Muslims) as the Quran states, "Say, "O People of the Scripture, come to a word that is equitable between us and you – that we will not worship except Allah and not associate anything with Him and not take one another as lords instead of Allah." But if they turn away, then say, "Bear witness that we are Muslims [submitting to Him]" [3:64].

Many traditional and religious texts and customs of the faith have encouraged this, including specific verses in the Quran, such as: "O people! Behold, we have created you from a male and a female and have made you into nations and tribes so that you might come to know one another. Verily, the noblest of you in the sight of God is the one who is most deeply conscious of Him. Behold, God is all-knowing, all-aware" [Qur'an 49:13].

In recent times, Muslim theologians have advocated inter-faith dialogue on a large scale, something which is new in a political sense. The declaration A Common Word of 2007 was a public first in Christian-Islam relations, trying to work out a moral common ground on many social issues. This common ground was stated as "part of the very foundational principles of both faiths: love of the One God, and love of the neighbour". The declaration asserted that "these principles are found over and over again in the sacred texts of Islam and Christianity".

Interfaith dialogue integral to Islam

A 2003 book called Progressive Muslims: On Justice, Gender, and Pluralism contains a chapter by Amir Hussain on "Muslims, Pluralism, and Interfaith Dialogue" in which he shows how interfaith dialogue has been an integral part of Islam from its beginning. Hussain writes that "Islam would not have developed if it had not been for interfaith dialogue". From his "first revelation" for the rest of his life, Muhammad was "engaged in interfaith dialogue" and "pluralism and interfaith dialogue" have always been important to Islam. For example, when some of Muhammad's followers suffered "physical persecution" in Mecca, he sent them to Abyssinia, a Christian nation, where they were "welcomed and accepted" by the Christian king. Another example is Córdoba, Andalusia in Muslim Spain, in the ninth and tenth centuries. Córdoba was "one of the most important cities in the history of the world". In it, "Christians and Jews were involved in the Royal Court and the intellectual life of the city". Thus, there is "a history of Muslims, Jews, Christians, and other religious traditions living together in a pluralistic society". Turning to the present, Hussain writes that in spite of Islam's history of "pluralism and interfaith dialogue", Muslims now face the challenge of conflicting passages in the Qur'an some of which support interfaith "bridge-building", but others can be used "justify mutual exclusion".

In October 2010, as a representative of Shia Islam, Ayatollah Mostafa Mohaghegh Damad, professor at the Shahid Beheshti University of Tehran, addressed the Special Assembly for the Middle East of the Synod of Catholic Bishops. In the address he spoke about "the rapport between Islam and Christianity" that has existed throughout the history of Islam as one of "friendship, respect and mutual understanding".

Book about Jewish–Muslim dialogue

In 2013, Rabbi Marc Schneier (Jewish) and Imam Shamsi Ali (Muslim) coauthored a book Sons of Abraham with the subtitle A Candid Conversation about the Issues That Divide and Unite Jews and Muslims. As Rabbi Marc Schneier and Imam Shamsi Ali show, "by reaching a fuller understanding of one another's faith traditions, Jews and Muslims can realize that they are actually more united than divided in their core beliefs". By their fuller understanding, they became "defenders of each other's religion, denouncing the twin threats of anti-Semitism and Islamophobia and promoting interfaith cooperation". In the book, regarding the state of Jewish-Muslim dialogue, although Rabbi Schneier acknowledges a "tremendous growth", he does not think that "we are where we want to be".

Ahmadiyya

The Ahmadiyya Muslim Community was founded in 1889. Its members "exceeding tens of millions" live in 206 countries. It rejects "terrorism in any form". It broadcasts its "message of peace and tolerance" over a satellite television channel MTA International Live Streaming, on its internet website, and by its Islam International Publications. A 2010 story in the BBC News said that the Ahmadi "is regarded by orthodox Muslims as heretical", The story also reported persecution and violent attacks against the Ahmadi.

According to the Ahmadiyya understanding, interfaith dialogues are an integral part of developing inter-religious peace and the establishment of peace. The Ahmadiyya Community has been organising interfaith events locally and nationally in various parts of the world in order to develop a better atmosphere of love and understanding between faiths. Various speakers are invited to deliver a talk on how peace can be established from their own or religious perspectives.

Preconditions

In her 2008 book The Im-Possibility of Interreligious Dialogue, Catherine Cornille outlines her preconditions for "constructive and enriching dialogue between religions". In summary, they include "doctrinal humility, commitment to a particular religion, interconnection, empathy, and hospitality". In full, they include the following:

  • humility (causes a respect of a person's view of other religions)
  • commitment (causes a commitment to faith that simultaneously accept tolerance to other faiths)
  • interconnection (causes the recognition of shared common challenges such as the reconciliation of families)
  • empathy (causes someone to view another religion from the perspective of its believers)
  • hospitability (like the tent of Abraham, that was open on all four sides as a sign of hospitality to any newcomer).

Breaking down the walls that divides faiths while respecting the uniqueness of each tradition requires the courageous embrace of all these preconditions.

In 2016, President Obama made two speeches that outlined preconditions for meaningful interfaith dialogue: On February 3, 2016, he spoke at the Islamic Society of Baltimore and on February 4, 2016, at the National Prayer Breakfast. The eight principles of interfaith relations as outlined by Obama were as follows:

  1. Relationship building requires visiting each other.
  2. Relationship requires learning about the others' history.
  3. Relationship requires an appreciation of the other.
  4. Relationship requires telling the truth.
  5. Relationships depend on living up to our core theological principles and values.
  6. Relationships offer a clear-headed understanding of our enemies.
  7. Relationships help us overcome fear.
  8. Relationship requires solidarity.

United Nations support

The United Nations Alliance of Civilizations is an initiative to prevent violence and support social cohesion by promoting intercultural and interfaith dialogue. The UNAOC was proposed by the President of the Spanish Government, José Luis Rodríguez Zapatero at the 59th General Assembly of the United Nations in 2005. It was co-sponsored by the Turkish Prime Minister Recep Tayyip Erdoğan.

In 2008, Anwarul Karim Chowdhury said: "Interfaith dialogue is absolutely essential, relevant, and necessary. ... If 2009 is to truly be the Year of Interfaith Cooperation, the U.N. urgently needs to appoint an interfaith representative at a senior level in the Secretariat."

The Republic of the Philippines will host a Special Non-Aligned Movement Ministerial Meeting on Interfaith Dialogue and Cooperation for Peace and Development from March 16 to 18 in Manila. During the meeting, to be attended by ministers of foreign affairs of the NAM member countries, a declaration in support of interfaith dialogue initiatives will be adopted. An accompanying event will involve civil society activities.

In 2010, HM King Abdullah II addressed the 65th UN General Assembly and proposed the idea for a 'World Interfaith Harmony Week' to further broaden his goals of faith-driven world harmony by extending his call beyond the Muslim and Christian community to include people of all beliefs, those with no set religious beliefs as well. A few weeks later, HRH Prince Ghazi bin Muhammad presented the proposal to the UN General Assembly, where it was adopted unanimously as a UN Observance Event. The first week of February, every year, has been declared a UN World Interfaith Harmony Week. The Royal Islamic Strategic Studies Centre released a document which summarises the key events leading up to the UN resolution as well as documenting some Letters of Support and Events held in honour of the week.

Criticism

The Islamist group Hizb ut-Tahrir rejects the concept of interfaith dialogue, stating that it is a western tool to enforce non-Islamic policies in the Islamic world.

Many Traditionalist Catholics, not merely Sedevacantists or the Society of St. Pius X, are critical of interfaith dialogue as a harmful novelty arising after the Second Vatican Council, which is said to have altered the previous notion of the Catholic Church's supremacy over other religious groups or bodies, as well as demoted traditional practices associated with traditional Roman Catholicism. In addition, these Catholics contend that, for the sake of collegial peace, tolerance and mutual understanding, interreligious dialogue devalues the divinity of Jesus Christ and the revelation of the Triune God by placing Christianity on the same footing as other religions that worship other deities. Evangelical Christians also critical for dialogues with Catholics.

Religious sociologist Peter L. Berger argued that one can reject interfaith dialogue on moral grounds in certain cases. The example he gave was that of a dialogue with imams who legitimate ISIS, saying such discussions ought to be avoided so as not to legitimate a morally repugnant theology.

In the case of Hinduism, it has been argued that the so-called interfaith "dialogue ... has [in fact] become the harbinger of violence. This is not because 'outsiders' have studied Hinduism or because the Hindu participants are religious 'fundamentalists' but because of the logical requirements of such a dialogue". With a detailed analysis of "two examples from Hinduism studies", S.N. Balagangadhara and Sarah Claerhout argue that, "in certain dialogical situations, the requirements of reason conflict with the requirements of morality".

The theological foundations of interreligious dialogue have also been critiqued on the grounds that any interpretation of another faith tradition will be predicated on a particular cultural, historical and anthropological perspective

Some critics of interfaith dialogue may not object to dialogue itself, but instead are critical of specific events claiming to carry on the dialogue. For example, the French Algerian prelate Pierre Claverie was at times critical of formal inter-religious conferences between Christians and Muslims which he felt remained too basic and surface-level. He shunned those meetings since he believed them to be generators of slogans and for the glossing over of theological differences. However, he had such an excellent knowledge of Islam that the people of Oran called him "the Bishop of the Muslims" which was a title that must have pleased him since he had dreamed of establishing true dialogue among all believers irrespective of faith or creed. Claverie also believed that the Islamic faith was authentic in practice focusing on people rather than on theories. He said that: "dialogue is a work to which we must return without pause: it alone lets us disarm the fanaticism; both our own and that of the other". He also said that "Islam knows how to be tolerant". In 1974 he joined a branch of Cimade which was a French NGO dedicated to aiding the oppressed and minorities.

United Nations Convention Against Corruption

From Wikipedia, the free encyclopedia
https://en.wikipedia.org/wiki/United_Nations_Convention_Against_Corruption

United Nations Convention Against Corruption
UNCACmap.svg
Signatories (yellow) and ratifiers (green) of the treaty; those who did not sign are in red.
Drafted31 October 2003
Signed9 December 2003
LocationMérida and New York
Effective14 December 2005
Condition30 ratifications
Signatories140
Parties189
DepositarySecretary-General of the United Nations
LanguagesArabic, Chinese, English, French, Russian and Spanish

The United Nations Convention Against Corruption (UNCAC) is the only legally binding international anti-corruption multilateral treaty. Negotiated by member states of the United Nations (UN) it has been adopted by the UN General Assembly in October 2003 and entered into force in December 2005. The treaty recognises the importance of both preventive and punitive measures, addresses the cross-border nature of corruption with provisions on international cooperation and on the return of the proceeds of corruption. The UN Office on Drugs and Crime (UNODC) in Vienna serves as Secretariat for the UNCAC. UNCAC's goal is to reduce various types of corruption that can occur across country borders, such as trading in influence and abuse of power, as well as corruption in the private sector, such as embezzlement and money laundering. Another goal of the UNCAC is to strengthen international law enforcement and judicial cooperation between countries by providing effective legal mechanisms for international asset recovery.

States Parties – countries that have ratified the Convention – are expected to cooperate in criminal matters and consider assisting each other in investigations of and proceedings in civil and administrative matters relating to corruption. The Convention further calls for the participation of civil society and non-governmental organisations in accountability processes and underlines the importance of citizens’ access to information.

Signatures, ratifications and entry into force

UNCAC was adopted by the United Nations General Assembly on 31 October 2003 by Resolution 58/4. It was opened for signature in Mérida, Yucatán, Mexico, from 9 to 11 December 2003 and thereafter at UN headquarters in New York City. It was signed by 140 countries. As of December 2021, there are 189 parties, which includes 181 UN member states, the Cook Islands, Niue, the Holy See, the State of Palestine, and the European Union.

As of December 2021, the 9 UN member states that have not ratified the convention are (asterisk indicates that the state has signed the convention):

Measures and provisions of the Convention

UNCAC covers five main areas that includes both mandatory and non-mandatory provisions:

General provisions (Chapter I, Articles 1–4)

United Nations Convention Against Corruption, 2003

The opening Articles of UNCAC include a statement of purpose (Article1), which covers both the promotion of integrity and accountability within each country and the support of international cooperation and technical assistance between States Parties. They also include definitions of critical terms used in the instrument. Some of these are similar to those used in other instruments, and in particular the United Nations Convention against Transnational Organized Crime (UNTOC), but those defining "public official", "foreign public official", and "official of a public international organization" are new and are important for determining the scope of application of UNCAC in these areas. UNCAC does not provide a definition of corruption. In accordance with Article 2 of the UN Charter, Article 4 of UNCAC provides for the protection of national sovereignty of the States Parties.

Preventive measures (Chapter II, Articles 5–14)

UNCAC recognizes the importance of the prevention in both the public and private sectors. Chapter II includes preventive policies, such as the establishment of anti-corruption bodies and enhanced transparency in the financing of election campaigns and political parties. Anti-corruption bodies should implement anti-corruption policies, disseminate knowledge and must be independent, adequately resourced and have properly trained staff.

Countries that sign the convention must assure safeguards their public services are subject to safeguards that promote efficiency, transparency and recruitment based on merit. Once recruited, public servants should be bound by codes of conduct, requirements for financial and other disclosures, and appropriate disciplinary measures. Transparency and accountability in the management of public finances must also be promoted, and specific requirements are established for the prevention of corruption in the particularly critical areas of the public sector, such as the judiciary and public procurement. Preventing corruption also requires an effort from all members of society at large. For these reasons, UNCAC calls on countries to promote actively the involvement of civil society, and to raise public awareness of corruption and what can be done about it. The requirements made for the public sector also apply to the private sector – it too is expected to adopt transparent procedures and codes of conduct.

Criminalization and law enforcement (Chapter III, Articles 15–44)

Chapter III calls for parties to establish or maintain a series of specific criminal offences including not only long-established crimes such as bribery and embezzlement, but also conducts not previously criminalized in many states, such as trading in influence and other abuses of official functions. The broad range of ways in which corruption has manifested itself in different countries and the novelty of some of the offences pose serious legislative and constitutional challenges, a fact reflected in the decision of the Ad Hoc Committee to make some of the provisions either optional ("...shall consider adopting...") or subject to domestic constitutional or other fundamental requirements ("...subject to its constitution and the fundamental principles of its legal system..."). Specific acts that parties must criminalize include

  • active bribery of a national, international or foreign public officials
  • passive bribery of a national public official
  • embezzlement of public funds

Other mandatory crimes include obstruction of justice, and the concealment, conversion or transfer of criminal proceeds (money laundering). Sanctions extend to those who participate in and may extend to those who attempt to commit corruption offences. UNCAC thus goes beyond previous instruments of this kind that request parties to criminalize only basic forms of corruption. Parties are encouraged – but not required – to criminalize, inter alia, passive bribery of foreign and international public officials, trading in influence, abuse of function, illicit enrichment, private sector bribery and embezzlement, and the concealment of illicit assets.

Furthermore, parties are required to simplify rules pertaining to evidence of corrupt behavior by, inter alia, ensuring that obstacles that may arise from the application of bank secrecy laws are overcome. This is especially important, as corrupt acts are frequently very difficult to prove in court. Particularly important is also the introduction of the liability of legal persons. In the area of law enforcement, UNCAC calls for better cooperation between national and international bodies and with civil society. There is a provision for the protection of witnesses, victims, expert witnesses and whistle blowers to ensure that law enforcement is truly effective.

Russia ratified the convention in 2006, but failed to include article 20, which criminalizes "illicit enrichment". In March 2013, the Communist Party of the Russian Federation submitted a petition with 115,000 signatures to the State Duma in favour of doing so. In 2015, however, no such law was yet in effect in Russia.

International cooperation (Chapter IV, Articles 43–49)

Under Chapter IV of UNCAC, States Parties are obliged to assist one another in every aspect of the fight against corruption, including prevention, investigation, and the prosecution of offenders. Cooperation takes the form of extradition, mutual legal assistance, transfer of sentences persons and criminal proceedings, and law enforcement cooperation. Cooperation in civil and administrative matters is also encouraged. Based on Chapter IV, UNCAC itself can be used as a basis for extradition, mutual legal assistance and law enforcement with respect to corruption-related offences. "Dual criminality", which is a requirement that the relevant offence shall be criminalized in both the requesting and requested country, is considered fulfilled irrespective of whether the same terminology or category of offense is used in both jurisdictions. In case of a request for assistance involving non-coercive measures, States Parties are required to provide assistance even when dual criminality is absent subject only to the basic concepts of their legal systems. Chapter IV also contains other innovative provisions designed to facilitate international cooperation. For example, States Parties that use UNCAC as a basis for extradition shall not consider corruption-related offences as political ones; assistance can also be provided in relation to offences for which legal persons can be held responsible; and bank secrecy cannot be cited as a ground to refuse a request for assistance. In order to ensure speedy and efficient cooperation, each State Party is required to designate a central authority responsible for receiving MLA requests. Overall, Chapter IV provides a broad and flexible platform for international cooperation. However, its provisions do not exhaust all international cooperation issues covered by UNCAC, thus the purposes of UNCAC and provisions of other chapters also need to be taken into consideration.

Asset recovery (Chapter V, Articles 51–59)

The agreement on asset recovery is considered a major breakthrough and many observers claim that it is one of the reasons why so many developing countries have signed UNCAC. Asset recovery is indeed a very important issue for many developing countries where high-level corruption has plundered the national wealth. Reaching an agreement on this Chapter involved intensive negotiations, as the legitimate interests of countries wishing to recover illicit assets had to be reconciled with the legal and procedural safeguards of the countries from which assistance will be sought. Generally, in the course of the negotiations, countries seeking to recover assets sought to establish presumptions that would make clear their ownership of the assets and give priority for return over other means of disposal. Countries from which the return was likely to be sought, on the other hand, had concerns about the language that might have compromised basic human rights and procedural protections associated with criminal liability and the freezing, seizure, forfeiture and return of such assets.

Chapter V of UNCAC establishes asset recovery as a "fundamental principle" of the convention. The provisions on asset recovery lay a framework, in both civil and criminal law, for tracing, freezing, forfeiting and returning funds obtained through corrupt activities. The requesting state will in most cases receive the recovered funds as long as it can prove ownership. In some cases, the funds may be returned directly to individual victims.

If no other arrangement is in place, States Parties may use the Convention itself as a legal basis. Article 54(1)(a) of UNCAC provides that: "Each State Party (shall)... take such measures as may be necessary to permit its competent authorities to give effect to an order of confiscation issued by a court of another state party" Indeed, Article 54(2)(a) of UNCAC also provides for the provisional freezing or seizing of property where there are sufficient grounds for taking such actions in advance of a formal request being received.

Recognizing that recovering assets once transferred and concealed is an exceedingly costly, complex and an all-too-often unsuccessful process, this Chapter also incorporates elements intended to prevent illicit transfers and generate records that can be used where illicit transfers eventually have to be traced, frozen, seized and confiscated (Article 52). The identification of experts who can assist developing countries in this process is also included as a form of technical assistance (Article 60(5)).

Technical assistance and information exchange (Chapter VI, Articles 60–62)

Chapter VI of UNCAC is dedicated to technical assistance, meaning support offered to developing and transition countries in the implementation of UNCAC. The provisions cover training, material and human resources, research, and information sharing. UNCAC also calls for cooperation through international and regional organizations (many of which already have established anti-corruption programmes), research efforts, and the contribution of financial resources both directly to developing countries and countries with economies in transition, and to the UNODC.

Mechanisms for implementation (Chapter VII, Articles 63–64)

Chapter VII deals with international implementation through the CoSP and the UN Secretariat.

Final provisions (Chapter VIII, Articles 65 – 71)

The final provisions are similar to those found in other UN treaties. Key provisions ensure that UNCAC requirements are to be interpreted as minimum standards, which States Parties are free to exceed with measures "more strict or severe" than those set out in specific provisions; and the two Articles governing signature, ratification and the coming into force of the convention.

Conference of the States Parties

Pursuant to article 63 of UNCAC, a Conference of the States Parties (CoSP) to UNCAC was established to improve the capacity of and cooperation between States Parties to achieve the objectives set forth in UNCAC, and to promote and review its implementation. UNODC acts as the secretariat to the CoSP. At its different sessions, besides regularly calling States Parties and signatories to adapt their laws and regulations to bring them into conformity with the provisions of UNCAC the CoSP has adopted resolutions and has mandated UNODC to implement them, including through the development of technical assistance projects.

The CoSP has established a number of subsidiary bodies to further the implementation of specific aspects of UNCAC. The Implementation Review Group, which focuses on the implementation review mechanism and technical assistance, the Working Group on Asset Recovery, the Working Group on Prevention, as well as expert group meetings on international cooperation meet regularly in the intersessional period.

  • The first session of the CoSP took place on 10–14 December 2006 at the Dead Sea, Jordan. In its resolution 1/1, States Parties agreed that it was necessary to establish an appropriate and effective mechanism to assist in the review of the implementation of UNCAC. An inter-governmental working group was established to start working on the design of such a mechanism. Two other working groups were set up to promote coordination of activities related to technical assistance and asset recovery, respectively.
  • The second session was held in Bali, Indonesia, from 28 January to 1 February 2008. As to the mechanism for the review of implementation, the States Parties decided to take into account a balanced geographical approach, to avoid any adversarial or punitive elements, to establish clear guidelines for every aspect of the mechanism and to promote universal adherence to UNCAC and the constructive collaboration in preventive measures, asset recovery, international cooperation and other areas. The CoSP also requested donors and receiving countries to strengthen coordination and enhance technical assistance for the implementation of UNCAC, and dealt with the issue of bribery of officials of public international organizations.
  • The third session of the CoSP took place in Doha, Qatar, from 9 to 13 November 2009. The CoSP adopted the landmark Resolution 3/1 on the review of the implementation of UNCAC, containing the terms of reference of the Implementation Review Mechanism (IRM). In view of the establishment of the IRM, and considering that the identification of needs and the delivery of technical assistance to facilitate the successful and consistent implementation of UNCAC are at the core of the mechanism, the CoSP decided to abolish the Working Group on Technical Assistance and to fold its mandate into the work of the Implementation Review Group. For the first time, the CoSP also adopted a resolution on preventive measures, in which it established the Open-Ended Intergovernmental Working Group on Prevention to further explore good practices in this field. The CoSP was preceded and accompanied by numerous side events, such as the last Global Forum for Fighting Corruption and Safeguarding Integrity (in cooperation with businesses) and a Youth Forum.
  • The fourth session of the CoSP took place in Marrakech, Morocco, from 24 to 28 October 2011. The Conference considered the progress made in the IRM and recognized the importance of addressing technical assistance needs in the Review Mechanism. It also reiterated its support for the Working Groups on Asset Recovery and Prevention and established Open-Ended Intergovernmental Expert Group Meetings on International Cooperation to advise and assist the CoSP with respect to extradition and mutual legal assistance.

Other sessions of the CoSP took place in Panama in 2013, the Russian Federation in 2015, Austria in 2017 and United Arab Emirates in 2019.

Implementation of the UNCAC and monitoring mechanism

RR5111-0308R.jpg

In accordance with Article 63(7) of UNCAC, "the Conference shall establish, if it deems necessary, any appropriate mechanism or body to assist in the effective implementation of the Convention". At its first session, the CoSP established an open-ended intergovernmental expert group to make recommendations to the Conference on the appropriate mechanism. A voluntary "Pilot Review Programme", which was limited in scope, was initiated to offer adequate opportunity to test possible methods to review the implementation of UNCAC, with the overall objective to evaluate efficiency and effectiveness of the tested mechanism(s) and to provide to the CoSP information on lessons learnt and experience acquired, thus enabling the CoSP to make informed decisions on the establishment of an appropriate mechanism for reviewing the implementation of UNCAC.

The CoSP at its third session, held in Doha in November 2009, adopted Resolution 3/1 on the review of the implementation of the convention, containing the terms of reference of an Implementation Review Mechanism (IRM). It established a review mechanism aimed at assisting countries to meet the objectives of UNCAC through a peer review process. The IRM is intended to further enhance the potential of the UNCAC, by providing the means for countries to assess their level of implementation through the use of a comprehensive self-assessment checklist, the identification of potential gaps and the development of action plans to strengthen the implementation of UNCAC domestically. UNODC serves as the secretariat to the review mechanism.

The Terms of Reference contain procedures and processes for the peer review of the States Parties implementation of the UNCAC, including the formation of an oversight body called the Implementation Review Group (IRG).

In July 2010 the IRG met for the first time in Vienna and adopted the guidelines for governmental experts and the UNCAC secretariat – the UN Office on Drugs and Crime (UNODC) – in the conduct of a country review. The mechanism consists of a multi-stage peer review which involves the review of each State Party by two peers – one from the same UN region and one from another one. To cover all States Parties, the review process is divided into two five-year cycles where countries are randomly selected to be reviewed in each year of the cycle. The first cycle started in 2010 and covers Chapter III and IV of the convention. The second cycle was launched in November 2015 and is currently underway, covering Chapters II and V, reviewing corruption prevention measures and asset recovery. While the second cycle is scheduled to end in 2021, the process is facing substantial delays, more than three years into the second cycle, only 20 of the 184 countries had completed the review process by May 2019.

It has yet to be decided if and how the review mechanism will continue after the end of the five years foreseen for the second cycle, but if the first cycle is a guide, then the reviews will continue beyond the five years.

A country review process follows these phases:

  1. Self-assessment: UNODC informs the State Party that it is under review. The State Party identifies a focal point to coordinate the country's participation in the review and then fills out a standardised self-assessment checklist.
  2. Peer review: two reviewer States Parties – decided by lots – provide experts to form a review team. The team conducts a desk review of the completed self-assessment checklist. It may require further information from the focal point and direct dialogue through conference calls, or a country visit if agreed by the country reviewed.
  3. Country review report and executive summary: with the assistance of UNODC, the expert review team prepares a country review report (80–300 pages). The report is sent to the focal point for approval. In cases of disagreement, the reviewers and the contact point engage in dialogue to arrive at a consensual final report, which is published in full only with the agreement of the country under review. The expert review team produces an executive summary of this report (7–12 pages), which is automatically published on the UNODC website.

UNCAC Coalition

The UNCAC Coalition, established in 2006, is a global network of over 350 civil society organisations (CSOs) in over 100 countries, committed to promoting the ratification, implementation and monitoring of the UNCAC. The Coalition engages in joint action around common positions on the UNCAC, facilitates the exchange of information among members, and supports national civil society efforts to promote the UNCAC. Coalition members share views via the Coalition website and a mailing list and ad hoc working groups. The Coalition supports civil society organisations to engage in and contribute to the UNCAC review process, including through technical support.

The Coalition, directly and through its members, advocates for greater transparency and space for civil society participation in all UNCAC fora – the Conference of States Parties, the meetings of the Implementation Review Group, working groups and the review process on the national level. Furthermore, the Coalition seeks to advance discussions on key issues covered by the convention, including:

  • Access to Information
  • Asset Recovery
  • Beneficial Company Ownership Transparency
  • Protection of Whistleblowers and Anti-Corruption Activists

It aims to mobilize broad civil society support for UNCAC and to facilitate strong civil society action at national, regional and international levels in support of UNCAC. The Coalition is open to all organizations and individuals committed to these goals. The breadth of UNCAC means that its framework is relevant for a wide range of CSOs, including groups working in the areas of human rights, labour rights, governance, economic development, environment and private sector accountability.

Challenges

Ratification of UNCAC, while essential, is only the first step. Fully implementing its provisions presents significant challenges for the international community as well as individual States parties, particularly in relation to the innovative areas of UNCAC. For this reason, countries have often needed policy guidance and technical assistance to ensure the effective implementation of UNCAC. The results of the first years of IRM have shown that many developing countries have identified technical assistance needs. The provision of technical assistance, as foreseen in UNCAC, is crucial to ensure the full and effective incorporation of the provisions of UNCAC into domestic legal systems and, above all, into the reality of daily life.

Emulsion polymerization

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

Emulsion polymerization is a type of radical polymerization that usually starts with an emulsion incorporating water, monomer, and surfactant. The most common type of emulsion polymerization is an oil-in-water emulsion, in which droplets of monomer (the oil) are emulsified (with surfactants) in a continuous phase of water. Water-soluble polymers, such as certain polyvinyl alcohols or hydroxyethyl celluloses, can also be used to act as emulsifiers/stabilizers. The name "emulsion polymerization" is a misnomer that arises from a historical misconception. Rather than occurring in emulsion droplets, polymerization takes place in the latex/colloid particles that form spontaneously in the first few minutes of the process. These latex particles are typically 100 nm in size, and are made of many individual polymer chains. The particles are prevented from coagulating with each other because each particle is surrounded by the surfactant ('soap'); the charge on the surfactant repels other particles electrostatically. When water-soluble polymers are used as stabilizers instead of soap, the repulsion between particles arises because these water-soluble polymers form a 'hairy layer' around a particle that repels other particles, because pushing particles together would involve compressing these chains.

Emulsion polymerization is used to make several commercially important polymers. Many of these polymers are used as solid materials and must be isolated from the aqueous dispersion after polymerization. In other cases the dispersion itself is the end product. A dispersion resulting from emulsion polymerization is often called a latex (especially if derived from a synthetic rubber) or an emulsion (even though "emulsion" strictly speaking refers to a dispersion of an immiscible liquid in water). These emulsions find applications in adhesives, paints, paper coating and textile coatings. They are often preferred over solvent-based products in these applications due to the absence of volatile organic compounds (VOCs) in them.

IUPAC definition

Emulsion polymerization: Polymerization whereby monomer(s), initiator, dispersion
medium, and possibly colloid stabilizer constitute initially an inhomogeneous system
resulting in particles of colloidal dimensions containing the formed polymer.

Note: With the exception of mini-emulsion polymerization, the term “emulsion polymerization”
does not mean that polymerization occurs in the droplets of a monomer emulsion.

Batch emulsion polymerization: Emulsion polymerization in which all the ingredients are
placed in a reactor prior to reaction.

Advantages of emulsion polymerization include:

  • High molecular weight polymers can be made at fast polymerization rates. By contrast, in bulk and solution free-radical polymerization, there is a tradeoff between molecular weight and polymerization rate.
  • The continuous water phase is an excellent conductor of heat, enabling fast polymerization rates without loss of temperature control.
  • Since polymer molecules are contained within the particles, the viscosity of the reaction medium remains close to that of water and is not dependent on molecular weight.
  • The final product can be used as is and does not generally need to be altered or processed.

Disadvantages of emulsion polymerization include:

  • Surfactants and other polymerization adjuvants remain in the polymer or are difficult to remove
  • For dry (isolated) polymers, water removal is an energy-intensive process
  • Emulsion polymerizations are usually designed to operate at high conversion of monomer to polymer. This can result in significant chain transfer to polymer.
  • Can not be used for condensation, ionic, or Ziegler-Natta polymerization, although some exceptions are known.

History

The early history of emulsion polymerization is connected with the field of synthetic rubber. The idea of using an emulsified monomer in an aqueous suspension or emulsion was first conceived at Bayer, before World War I, in an attempt to prepare synthetic rubber. The impetus for this development was the observation that natural rubber is produced at room temperature in dispersed particles stabilized by colloidal polymers, so the industrial chemists tried to duplicate these conditions. The Bayer workers used naturally occurring polymers such as gelatin, ovalbumin, and starch to stabilize their dispersion. By today's definition these were not true emulsion polymerizations, but suspension polymerizations.

The first "true" emulsion polymerizations, which used a surfactant and polymerization initiator, were conducted in the 1920s to polymerize isoprene. Over the next twenty years, through the end of World War II, efficient methods for production of several forms of synthetic rubber by emulsion polymerization were developed, but relatively few publications in the scientific literature appeared: most disclosures were confined to patents or were kept secret due to wartime needs.

After World War II, emulsion polymerization was extended to production of plastics. Manufacture of dispersions to be used in latex paints and other products sold as liquid dispersions commenced. Ever more sophisticated processes were devised to prepare products that replaced solvent-based materials. Ironically, synthetic rubber manufacture turned more and more away from emulsion polymerization as new organometallic catalysts were developed that allowed much better control of polymer architecture.

Theoretical overview

The first successful theory to explain the distinct features of emulsion polymerization was developed by Smith and Ewart, and Harkins in the 1940s, based on their studies of polystyrene. Smith and Ewart arbitrarily divided the mechanism of emulsion polymerization into three stages or intervals. Subsequently, it has been recognized that not all monomers or systems undergo these particular three intervals. Nevertheless, the Smith-Ewart description is a useful starting point to analyze emulsion polymerizations.

Schematic of emulsion polymerization

The Smith-Ewart-Harkins theory for the mechanism of free-radical emulsion polymerization is summarized by the following steps:

  • A monomer is dispersed or emulsified in a solution of surfactant and water, forming relatively large droplets in water.
  • Excess surfactant creates micelles in the water.
  • Small amounts of monomer diffuse through the water to the micelle.
  • A water-soluble initiator is introduced into the water phase where it reacts with monomer in the micelles. (This characteristic differs from suspension polymerization where an oil-soluble initiator dissolves in the monomer, followed by polymer formation in the monomer droplets themselves.) This is considered Smith-Ewart interval 1.
  • The total surface area of the micelles is much greater than the total surface area of the fewer, larger monomer droplets; therefore the initiator typically reacts in the micelle and not the monomer droplet.
  • Monomer in the micelle quickly polymerizes and the growing chain terminates. At this point the monomer-swollen micelle has turned into a polymer particle. When both monomer droplets and polymer particles are present in the system, this is considered Smith-Ewart interval 2.
  • More monomer from the droplets diffuses to the growing particle, where more initiators will eventually react.
  • Eventually the free monomer droplets disappear and all remaining monomer is located in the particles. This is considered Smith-Ewart interval 3.
  • Depending on the particular product and monomer, additional monomer and initiator may be continuously and slowly added to maintain their levels in the system as the particles grow.
  • The final product is a dispersion of polymer particles in water. It can also be known as a polymer colloid, a latex, or commonly and inaccurately as an 'emulsion'.

Smith-Ewart theory does not predict the specific polymerization behavior when the monomer is somewhat water-soluble, like methyl methacrylate or vinyl acetate. In these cases homogeneous nucleation occurs: particles are formed without the presence or need for surfactant micelles.

High molecular weights are developed in emulsion polymerization because the concentration of growing chains within each polymer particle is very low. In conventional radical polymerization, the concentration of growing chains is higher, which leads to termination by coupling, which ultimately results in shorter polymer chains. The original Smith-Ewart-Hawkins mechanism required each particle to contain either zero or one growing chain. Improved understanding of emulsion polymerization has relaxed that criterion to include more than one growing chain per particle, however, the number of growing chains per particle is still considered to be very low.

Because of the complex chemistry that occurs during an emulsion polymerization, including polymerization kinetics and particle formation kinetics, quantitative understanding of the mechanism of emulsion polymerization has required extensive computer simulation. Robert Gilbert has summarized a recent theory.

More detailed treatment of Smith-Ewart theory

Interval 1

When radicals generated in the aqueous phase encounter the monomer within the micelle, they initiate polymerization. The conversion of monomer to polymer within the micelle lowers the monomer concentration and generates a monomer concentration gradient. Consequently, the monomer from monomer droplets and uninitiated micelles begin to diffuse to the growing, polymer-containing, particles. Those micelles that did not encounter a radical during the earlier stage of conversion begin to disappear, losing their monomer and surfactant to the growing particles. The theory predicts that after the end of this interval, the number of growing polymer particles remains constant.

Interval 2

This interval is also known as steady state reaction stage. Throughout this stage, monomer droplets act as reservoirs supplying monomer to the growing polymer particles by diffusion through the water. While at steady state, the ratio of free radicals per particle can be divided into three cases. When the number of free radicals per particle is less than 12, this is called Case 1. When the number of free radicals per particle equals 12, this is called Case 2. And when there is greater than 12 radical per particle, this is called Case 3. Smith-Ewart theory predicts that Case 2 is the predominant scenario for the following reasons. A monomer-swollen particle that has been struck by a radical contains one growing chain. Because only one radical (at the end of the growing polymer chain) is present, the chain cannot terminate, and it will continue to grow until a second initiator radical enters the particle. As the rate of termination is much greater than the rate of propagation, and because the polymer particles are extremely small, chain growth is terminated immediately after the entrance of the second initiator radical. The particle then remains dormant until a third initiator radical enters, initiating the growth of a second chain. Consequently, the polymer particles in this case either have zero radicals (dormant state), or 1 radical (polymer growing state) and a very short period of 2 radicals (terminating state) which can be ignored for the free radicals per particle calculation. At any given time, a micelle contains either one growing chain or no growing chains (assumed to be equally probable). Thus, on average, there is around 1/2 radical per particle, leading to the Case 2 scenario. The polymerization rate in this stage can be expressed by

where is the homogeneous propagation rate constant for polymerization within the particles and is the equilibrium monomer concentration within a particle. represents the overall concentration of polymerizing radicals in the reaction. For Case 2, where the average number of free radicals per micelle are , can be calculated in following expression:

where is number concentration of micelles (number of micelles per unit volume), and is the Avogadro constant (6.02×1023 mol−1). Consequently, the rate of polymerization is then

Interval 3

Separate monomer droplets disappear as the reaction continues. Polymer particles in this stage may be sufficiently large enough that they contain more than 1 radical per particle.

Process considerations

Emulsion polymerizations have been used in batch, semi-batch, and continuous processes. The choice depends on the properties desired in the final polymer or dispersion and on the economics of the product. Modern process control schemes have enabled the development of complex reaction processes, with ingredients such as initiator, monomer, and surfactant added at the beginning, during, or at the end of the reaction.

Early styrene-butadiene rubber (SBR) recipes are examples of true batch processes: all ingredients added at the same time to the reactor. Semi-batch recipes usually include a programmed feed of monomer to the reactor. This enables a starve-fed reaction to ensure a good distribution of monomers into the polymer backbone chain. Continuous processes have been used to manufacture various grades of synthetic rubber.

Some polymerizations are stopped before all the monomer has reacted. This minimizes chain transfer to polymer. In such cases the monomer must be removed or stripped from the dispersion.

Colloidal stability is a factor in design of an emulsion polymerization process. For dry or isolated products, the polymer dispersion must be isolated, or converted into solid form. This can be accomplished by simple heating of the dispersion until all water evaporates. More commonly, the dispersion is destabilized (sometimes called "broken") by addition of a multivalent cation. Alternatively, acidification will destabilize a dispersion with a carboxylic acid surfactant. These techniques may be employed in combination with application of shear to increase the rate of destabilization. After isolation of the polymer, it is usually washed, dried, and packaged.

By contrast, products sold as a dispersion are designed with a high degree of colloidal stability. Colloidal properties such as particle size, particle size distribution, and viscosity are of critical importance to the performance of these dispersions.

Living polymerization processes that are carried out via emulsion polymerization such as iodine-transfer polymerization and RAFT have been developed.

Components

Monomers

Typical monomers are those that undergo radical polymerization, are liquid or gaseous at reaction conditions, and are poorly soluble in water. Solid monomers are difficult to disperse in water. If monomer solubility is too high, particle formation may not occur and the reaction kinetics reduce to that of solution polymerization.

Ethene and other simple olefins must be polymerized at very high pressures (up to 800 bar).

Comonomers

Copolymerization is common in emulsion polymerization. The same rules and comonomer pairs that exist in radical polymerization operate in emulsion polymerization. However, copolymerization kinetics are greatly influenced by the aqueous solubility of the monomers. Monomers with greater aqueous solubility will tend to partition in the aqueous phase and not in the polymer particle. They will not get incorporated as readily in the polymer chain as monomers with lower aqueous solubility. This can be avoided by a programmed addition of monomer using a semi-batch process.

Ethene and other alkenes are used as minor comonomers in emulsion polymerization, notably in vinyl acetate copolymers.

Small amounts of acrylic acid or other ionizable monomers are sometimes used to confer colloidal stability to a dispersion.

Initiators

Both thermal and redox generation of free radicals have been used in emulsion polymerization. Persulfate salts are commonly used in both initiation modes. The persulfate ion readily breaks up into sulfate radical ions above about 50 °C, providing a thermal source of initiation. Redox initiation takes place when an oxidant such as a persulfate salt, a reducing agent such as glucose, Rongalite, or sulfite, and a redox catalyst such as an iron compound are all included in the polymerization recipe. Redox recipes are not limited by temperature and are used for polymerizations that take place below 50 °C.

Although organic peroxides and hydroperoxides are used in emulsion polymerization, initiators are usually water soluble and partition into the water phase. This enables the particle generation behavior described in the theory section. In redox initiation, either the oxidant or the reducing agent (or both) must be water-soluble, but one component can be water-insoluble.

Surfactants

Selection of the correct surfactant is critical to the development of any emulsion polymerization process. The surfactant must enable a fast rate of polymerization, minimize coagulum or fouling in the reactor and other process equipment, prevent an unacceptably high viscosity during polymerization (which leads to poor heat transfer), and maintain or even improve properties in the final product such as tensile strength, gloss, and water absorption.

Anionic, nonionic, and cationic surfactants have been used, although anionic surfactants are by far most prevalent. Surfactants with a low critical micelle concentration (CMC) are favored; the polymerization rate shows a dramatic increase when the surfactant level is above the CMC, and minimization of the surfactant is preferred for economic reasons and the (usually) adverse effect of surfactant on the physical properties of the resulting polymer. Mixtures of surfactants are often used, including mixtures of anionic with nonionic surfactants. Mixtures of cationic and anionic surfactants form insoluble salts and are not useful.

Examples of surfactants commonly used in emulsion polymerization include fatty acids, sodium lauryl sulfate, and alpha-olefin sulfonate.

Non-surfactant stabilizers

Some grades of polyvinyl alcohol and other water-soluble polymers can promote emulsion polymerization even though they do not typically form micelles and do not act as surfactants (for example, they do not lower surface tension). It is believed that growing polymer chains graft onto these water-soluble polymers, which stabilize the resulting particles.

Dispersions prepared with such stabilizers typically exhibit excellent colloidal stability (for example, dry powders may be mixed into the dispersion without causing coagulation). However, they often result in products that are very water sensitive due to the presence of the water-soluble polymer.

Other ingredients

Other ingredients found in emulsion polymerization include chain transfer agents, buffering agents, and inert salts. Preservatives are added to products sold as liquid dispersions to retard bacterial growth. These are usually added after polymerization, however.

Applications

Polymers produced by emulsion polymerization can roughly be divided into three categories.

Inequality (mathematics)

From Wikipedia, the free encyclopedia https://en.wikipedia.org/wiki/Inequality...