{"term":{"id":"08908","title":"controlled polymerization","longtitle":"IUPAC Gold Book - controlled polymerization","doi":"10.1351\/goldbook.08908","code":"08908","status":"current","definitions":[{"id":1,"text":"Term indicating control of a certain kinetic feature of a polymerization or structural aspect of the polymer molecules formed, or both.","notes":{"1":"The expression 'controlled polymerization' is sometimes used to describe a radical or ionic polymerization in which reversible deactivation of the chain carriers is an essential component of the mechanism, interrupting the propagation to secure control of one or more kinetic features of the polymerization or one or more structural aspects of the macromolecules formed, or both.","2":"The expression controlled radical polymerization is sometimes used to describe a radical polymerization conducted in the presence of reagents that lead to, e.g., atom-transfer radical polymerization (ATRP), aminoxyl-mediated radical polymerization (AMRP), or reversible-addition-fragmentation chain transfer (RAFT) polymerization.","3":"Generally, the adjective 'controlled' should not be used without specifying the particular kinetic or structural feature that is subject to control."},"links":[{"term":"aminoxyl-mediated radical polymerization","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/08917"},{"term":"atom-transfer radical polymerization","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/08924"},{"term":"controlled anionic polymerization","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/08979"},{"term":"controlled cationic polymerization","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/08985"},{"term":"controlled ionic polymerization","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/08973"},{"term":"controlled radical polymerization","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/08913"},{"term":"reversible deactivation","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/08912"},{"term":"reversible-addition-fragmentation chain transfer","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/08935"}],"sources":["PAC, 2022, 94, 1093. 'Terminology for chain polymerization (IUPAC Recommendations 2021)' on page 1099 (https:\/\/doi.org\/10.1515\/pac-2020-1211)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/08908\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/08908\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/08908\/plain"},"citation":"Citation: 'controlled polymerization' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351\/goldbook.08908","license":"The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/) for individual terms.","collection":"If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .","disclaimer":"The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.","accessed":"2026-07-01T15:34:03+00:00"}}