A SPIN-TRAP STUDY OF THE BENZOYL PEROXIDE INITIATED RADICAL COPOLYMERIZATION OF STYRENE AND VINYL-ACETATE

被引：10
|
作者：
LANE, J [1 ]
TABNER, BJ [1 ]
机构：
[1] UNIV LANCASTER,DEPT CHEM,LANCASTER LA1 4YA,ENGLAND
来源：
EUROPEAN POLYMER JOURNAL | 1991年 / 27卷 / 03期
关键词：
D O I：
10.1016/0014-3057(91)90101-S
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Electron spin resonance spectroscopy has been used, in conjunction with the spin-trapping technique (employing 2-methyl-2-nitrosopropane), to identify (and distinguish between) polystyrene and poly(vinyl acetate) propagating radicals. The technique has also been used to establish the relative concentrations of propagating radicals with a styrene or a vinyl acetate ultimate monomer unit at the radical end of the propagating chain in a range of styrene/vinyl acetate copolymerizations. From the data the monomer reactivity ratios have been estimated to be r(s) = 57 +/- 7 and r(VA) = 0.002 +/- 0.004.
引用
收藏
页码：247 / 250
页数：4
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