Copolymerization with depropagation:: A study of α-methyl styrene/methyl methacrylate in solution at elevated temperatures

被引:19
|
作者
Palmer, DE [1 ]
McManus, NT [1 ]
Penlidis, A [1 ]
机构
[1] Univ Waterloo, Dept Chem Engn, Waterloo, ON N2L 3G1, Canada
关键词
alpha-methyl styrene/methyl methacrylate (alpha-MS/MMA); depropagation; copolymer composition; reactivity ratios; toluene solution;
D O I
10.1002/pola.1153
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
In free-radical polymerization, solvents are routinely used to reduce the solution viscosity and molecular weight. In the case of the alpha -methyl styrene/methyl methacrylate copolymer system, reducing the monomer concentration also has significant effects on the copolymer composition and maximum conversion obtained. Reactivity-ratio studies as well as full-conversion-range data were provided, and the results were compared to similar data in the bulk phase from our earlier work. A 30 wt % toluene solution was used for all experimental conditions. Copolymer composition modeling results were also presented. (C) 2001 John Wiley & Sons, Inc.
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页码:1753 / 1763
页数:11
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