Kinetics and mechanism of styrene-acrylonitrile copolymerization in micro-emulsion

被引：0
|
作者：
Sanghvi, PG
Pokhriyal, NK
Hassan, PA
Devi, S [1 ]
机构：
[1] Maharaja Sayajirao Univ Baroda, Fac Sci, Dept Chem, Baroda 390002, Gujarat, India
[2] Bhabha Atom Res Ctr, Div Chem, Bombay 400085, Maharashtra, India
来源：
POLYMER INTERNATIONAL | 2000年 / 49卷 / 11期
关键词：
micro-emulsion; kinetics; copolymerization; styrene-acrylonitrile;
D O I：
10.1002/1097-0126(200011)49:11<1417::AID-PI521>3.0.CO;2-U
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Stable and transparent poly(styrene-acrylonitrile) latexes were produced by the polymerization of styrene-acrylonitrile in ternary o/w micro-emulsions containing sodium dodecyl sulfate as an anionic surfactant. Kinetics of copolymerization was studied at different temperatures using different concentrations of potassium persulfate and hydrogen peroxide/ascorbic acid. The suitability of existing model for homopolymerization was examined for styrene-acrylonitrile copolymerization after appropriate modification. The latexes were characterized for particle size and number of particles by dynamic light scattering and TEM. The isolated products were characterized by H-1 and C-13 NMR as well as by thermal analysis. The overall size of particles was found to be between 15 and 20 nm. (C) 2000 Society of Chemical Industry.
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页码：1417 / 1425
页数：9
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