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Evaluation of rate constants from experimental batch reactor data for anionic polymerization of poly(methyl methacrylate) at high temperatures
Author(s) -
Sailaja R. R. N.,
Kumar Anil
Publication year - 1997
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19970801)65:5<845::aid-app2>3.0.co;2-n
Subject(s) - polymerization , depolymerization , molar mass distribution , polymer chemistry , polymer , methyl methacrylate , reaction rate constant , anionic addition polymerization , materials science , chemistry , polymer science , chemical engineering , kinetics , organic chemistry , physics , quantum mechanics , engineering
At high temperatures, in anionic polymerization, depolymerization and autocyclization reactions cannot be ignored and the molecular weight distribution (MWD) results based on irreversible polymerization give erroneous results. In this article, we have developed a semianalytical solution for the MWD of the polymer for a general complex mechanism. We then show that the various rate constants can be directly determined from the experimental data on MWD. After evaluating these, it is possible to model the anionic polymerization more rationally, as we have demonstrated using the experimental data from the literature. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 65:845–859, 1997