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polymerization |
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polymerizationAny process in which monomers combine chemically to produce a polymer. The monomer molecules—which in the polymer usually number from at least 100 to many thousands—may or may not all be the same. In nature, enzymes carry out polymerization under ordinary conditions to form proteins, nucleic acids, and carbohydrate polymers; in industry, the reaction is usually done with a catalyst, often under high pressure or heat. In addition polymerization, monomers are added successively to the reactive ends of a growing polymer molecule, similar to adding links to a chain; during the reactions, no by-products are formed. In condensation polymerization, growth of the polymer advances stepwise—monomers having reactive functional groups combine into larger molecules with their own functional groups; each reaction splits off a small molecule, often water, as a by-product. polymerization, polymerisation the act or process of forming a polymer or copolymer, esp a chemical reaction in which a polymer is formed polymerization [pə‚lim·ə·rə′zā·shən] (chemistry) The bonding of two or more monomers to produce a polymer. Any chemical reaction that produces such a bonding. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Chemtura appointed Marcus Meadows-Smith executive vice president for plastic additives, and Andrew Einstein global business director, polymerization additives and intermediates. This plant-based fabric--the PPT is produced through the polymerization of propanediol, which is made from corn--is claimed to be both durable and resistant to sunlight, which means it is suitable for use in vehicle interiors. Tokyo, Japan, Aug 4, 2006 - (JCN) - Kaneka Corporation has succeeded in the Industrialization of reaction-curing type poly acrylic resin into liquid resin, the first of its kind in the world, using the Polymerization Technology developed by Carnegie Mellon University. |
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