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Activation–Deactivation Equilibrium of Atom Transfer Radical Polymerization of Styrene up to High Pressure

✍ Scribed by Joachim Morick; Michael Buback; Krzysztof Matyjaszewski

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
838 KB
Volume
212
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Atom transfer radical polymerization (ATRP) equilibrium constants, K~ATRP~, are measured for copper‐mediated styrene polymerizations in acetonitrile solution using several different ligand and initiator systems. Application of high pressure increases the rate of an ATRP by enhancing both K~ATRP~ and the propagation rate coefficient. This favorable effect is not counterbalanced by an increase in dispersity. A comparison of the values of K~ATRP~ measured on monomer‐free model systems shows close agreement with values measured during styrene polymerization.

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