08945 IUPAC Gold Book - chain reactivation 10.1351/goldbook.08945 08945 current synonyms: activation (in a chain polymerization), reactivation 1 Conversion of an inactive chain into a chain carrier. The term is usually used to refer to the reactivation of previously deactivated or dormant chains. Chain reactivation can be reversible or irreversible. The reverse of chain reactivation is chain deactivation. The recommended symbol for the rate coefficient for chain reactivation in a polymerization is \(k_{\rm{act}}\). chain activation https://goldbook.iupac.org//terms/view/08941 chain deactivation https://goldbook.iupac.org//terms/view/08943 dormant chains https://goldbook.iupac.org//terms/view/08952 inactive chain https://goldbook.iupac.org//terms/view/08953 PAC, 2022, 94, 1093. 'Terminology for chain polymerization (IUPAC Recommendations 2021)' on page 1118 (https://doi.org/10.1515/pac-2020-1211) https://goldbook.iupac.org/terms/view/08945/html https://goldbook.iupac.org/terms/view/08945/json https://goldbook.iupac.org/terms/view/08945/plain Citation: 'chain reactivation' 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.08945 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. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . 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. 2026-06-21T17:52:15+00:00