A colloid is a mixture in which one substance consisting of microscopically dispersed insoluble particles is suspended throughout another substance. However, some definitions specify that the particles must be dispersed in a liquid, and others extend the definition to include substances like aerosols and gels. The term colloidal suspension refers unambiguously to the overall mixture. A colloid has a dispersed phase and a continuous phase. The dispersed phase particles have a diameter of approximately 1 nanometre to 1 micrometre.
The International Union of Pure and Applied Chemistry is an international federation of National Adhering Organizations that represents chemists in individual countries. It is a member of the International Science Council (ISC). IUPAC is registered in Zürich, Switzerland, and the administrative office, known as the "IUPAC Secretariat", is in Research Triangle Park, North Carolina, United States. This administrative office is headed by IUPAC's executive director, currently Lynn Soby.
The American Chemical Society (ACS) is a scientific society based in the United States that supports scientific inquiry in the field of chemistry. Founded in 1876 at New York University, the ACS currently has more than 155,000 members at all degree levels and in all fields of chemistry, chemical engineering, and related fields. It is one of the world's largest scientific societies by membership. The ACS is a 501(c)(3) non-profit organization and holds a congressional charter under Title 36 of the United States Code. Its headquarters are located in Washington, D.C., and it has a large concentration of staff in Columbus, Ohio.
An addition polymer is a polymer that forms by simple linking of monomers without the co-generation of other products. Addition polymerization differs from condensation polymerization, which does co-generate a product, usually water. Addition polymers can be formed by chain polymerization, when the polymer is formed by the sequential addition of monomer units to an active site in a chain reaction, or by polyaddition, when the polymer is formed by addition reactions between species of all degrees of polymerization. Addition polymers are formed by the addition of some simple monomer units repeatedly. Generally polymers are unsaturated compounds like alkenes, alkalines etc. The addition polymerization mainly takes place in free radical mechanism. The free radical mechanism of addition polymerization completed by three steps i.e. Initiation of free radical, Chain propagation, Termination of chain.
Green chemistry, also called sustainable chemistry, is an area of chemistry and chemical engineering focused on the design of products and processes that minimize or eliminate the use and generation of hazardous substances. While environmental chemistry focuses on the effects of polluting chemicals on nature, green chemistry focuses on the environmental impact of chemistry, including reducing consumption of nonrenewable resources and technological approaches for preventing pollution.
A chemical nomenclature is a set of rules to generate systematic names for chemical compounds. The nomenclature used most frequently worldwide is the one created and developed by the International Union of Pure and Applied Chemistry (IUPAC).
The European Chemical Society (EuChemS) is a European non-profit organisation which promotes collaboration between non-profit scientific and technical societies in the field of chemistry.
An Interpenetrating polymer network (IPN) is a polymer comprising two or more networks which are at least partially interlaced on a polymer scale but not covalently bonded to each other. The network cannot be separated unless chemical bonds are broken. The two or more networks can be envisioned to be entangled in such a way that they are concatenated and cannot be pulled apart, but not bonded to each other by any chemical bond.
The International Union of Pure and Applied Chemistry publishes many books which contain its complete list of definitions. The definitions are divided into seven "colour books": Gold, Green, Blue, Purple, Orange, White, and Red. There is also an eighth book—the "Silver Book".
IUPAC Polymer Nomenclature are standardized naming conventions for polymers set by the International Union of Pure and Applied Chemistry (IUPAC) and described in their publication "Compendium of Polymer Terminology and Nomenclature", which is also known as the "Purple Book". Both the IUPAC and Chemical Abstracts Service (CAS) make similar naming recommendations for the naming of polymers.
The Compendium of Macromolecular Nomenclature, by the International Union of Pure and Applied Chemistry (IUPAC), provides definition of polymer related terms and rules of nomenclature of polymers. It is referred to as the Purple Book. It was published in 1991 (ISBN 0-63202-8475) by Blackwell Science. The author of this book is W.V. Metanomski.
Silvia Elsa Braslavsky is an Argentine chemist. She is the daughter of educationist Berta Perelstein de Braslavsky and biochemist Lázaro Braslavsky, and the sister of Cecilia Braslavsky, educationist and erstwhile director of the International Bureau of Education of UNESCO. She has two daughters, sociologist Paula-Irene Villa Braslavksy and Carolina Klockow.
An active center in polymer science refers to the site on a chain carrier at which reaction occurs.
The Inorganic Chemistry Division of the International Union of Pure and Applied Chemistry (IUPAC), also known as Division II, deals with all aspects of inorganic chemistry, including materials and bioinorganic chemistry, and also with isotopes, atomic weights and the periodic table. It furthermore advises the Chemical Nomenclature and Structure Representation Division on issues dealing with inorganic compounds and materials. For the general public, the most visible result of the division's work is that it evaluates and advises the IUPAC on names and symbols proposed for new elements that have been approved for addition to the periodic table. For the scientific end educational community the work on isotopic abundances and atomic weights is of fundamental importance as these numbers are continuously checked and updated.
Zafra M. Lerman is an American chemist, educator, and humanitarian. She is the President of the Malta Conferences Foundation, which aims to promote peace by bringing together scientists from otherwise hostile countries to discuss science and foster international scientific and technical collaboration. From 1986 to 2010, she chaired the American Chemical Society's Subcommittee on Scientific Freedom and Human Rights. She has been successful in preventing executions, releasing prisoners of conscience from jail and bringing dissidents to freedom. She is the recipient of many awards for education and science diplomacy, including the 1999 Presidential Award from U.S. President Clinton, the 2005 Nyholm Prize for Education from the Royal Society of Chemistry (England), the 2015 Science Diplomacy Award from the American Association for the Advancement of Science (AAAS), the 2016 Andrei Sakharov Award for human rights from the American Physical Society (APS), and the 2016 United Nations NOVUS Award for the 16th Sustainable Development Goal: Peace and Justice.
Giuseppe Resnati is an Italian chemist with interests in supramolecular chemistry and fluorine chemistry. He has a particular focus on self-assembly processes driven by halogen bonds and chalcogen bonds.
Swaminathan Sivaram is an Indian polymer chemist, inventor, institution builder and a former director of the National Chemical Laboratory, Pune. He is known for his pioneering work on alkylation of tertiary alkyl halides with trialkylaluminum and olefin polymerization and holds the highest number of US patents by an Indian working outside the US. He is a fellow of several significant professional organizations. The Government of India awarded him the fourth highest civilian honour of the Padma Shri, in 2006, for his contributions to Indian science.
Rachel O'Reilly is a British chemist and Professor at the University of Birmingham. She works at the interface of biology and materials, creating polymers that can mimic natural nanomaterials such as viruses and cells. She is a Fellow of the Royal Society of Chemistry.
Frans Carl De Schryver is a Belgian chemist currently serving as Professor Emeritus in the Department of Chemistry of the KU Leuven. Pursuing his interests in polymer synthesis, time and space resolved chemistry, he founded the Laboratory for Photochemistry and Spectroscopy at the KU Leuven. He has co-authored over 650 papers in peer-reviewed journals.
