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Radical Desorption Kinetics in Emulsion Polymerization, 2 – Brownian Dynamics Simulation of Radical Desorption in Non-Homogeneous Particles

✍ Scribed by Hugo F. Hernandez; Klaus Tauer

Publisher: John Wiley and Sons
Year: 2010
Tongue: English
Weight: 444 KB
Volume: 19
Category: Article
ISSN: 1022-1344
DOI: 10.1002/mats.200900089

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✦ Synopsis

Abstract

One of the most important events in free‐radical emulsion polymerization is desorption of radicals from the polymer particles to the aqueous phase. Desorption takes place by diffusion of radicals inside the particle toward the surface and transfer to the aqueous phase. The rate of desorption can be determined theoretically for homogeneous spherical particles. For more complex cases, analytical solutions become difficult or impossible to obtain and a numerical approach is better suited for estimating desorption rate coefficients. In this paper, Brownian dynamics simulation is used for the estimation of desorption rate coefficients in emulsion polymerization systems of increased complexity, in particular for non‐homogeneous polymer particles.

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