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Bulk and Solution Copolymerization of Butyl Acrylate/Methyl Methacrylate at Elevated Temperatures

✍ Scribed by Marc A. Dubé; Malik Hakim; Neil T. McManus; Alexander Penlidis

Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
168 KB
Volume
203
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

A series of bulk and solution (in toluene) copolymerizations of butyl acrylate/methyl methacrylate were performed independently at two laboratories. The runs were at elevated temperatures ranging from 90 to 140 °C conducted to high conversion levels, and samples were characterized for conversion, cumulative copolymer composition and number‐ and weight‐average molecular weights and distribution. Variation of the comonomer feed composition, temperature, and the solvent, initiator and chain transfer agent concentrations was studied. Using a mechanistic model, conversion data were predicted to high conversions using terminal model kinetics at 90 and 115 °C. The copolymer composition data conformed to the terminal kinetic model over the entire temperature range. Solvent effects were reflected by changes in the butyl acrylate rate constants.

Composition vs. conversion. Effect of feed composition for runs at 140 °C.

magnified imageComposition vs. conversion. Effect of feed composition for runs at 140 °C.

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