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Free radical suspension polymerization kinetics of styrene up to high conversion

✍ Scribed by Nurelegne Tefera; Günter Weickert; Robert Bloodworth; Johannes Schweer

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
918 KB
Volume
195
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Styrene was polymerized using different amounts of azoisobutyronitrile as initiator at temperatures of 70°C, 75°C and 80°C in suspension. The course of reaction up to almost complete conversion was modeled within a classical kinetic framework. Optimal simultaneous descriptions of both conversion and average degree of polymerization data were possible using two sets of values for the variation of the overall termination rate coefficient k~t~ with conversion. One explanation for this is that k~t~ is chain length dependent. Evidence for this necessity was derived by considering all kinetic parameters, except the termination rate coefficient, as reliable absolute values.

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