EMULSION POLYMERIZATION OF STYRENE IN THE PRESENCE OF POLY(OXYETHYLENE)-POLY(OXYPROPYLENE) BLOCK COPOLYMERS

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作者
HERGETH, WD
BLOSS, P
BIEDENWEG, F
ABENDROTH, P
SCHMUTZLER, K
WARTEWIG, S
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中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Poly(oxyethylene)-block-poly(oxypropylene)-block-poly(oxyethylene) copolymers were applied as nonionic surfactants in styrene emulsion polymerization. The clouding phenomenon of the surfactant in the aqueous phase and the resulting characteristic partition of the block copolymer between aqueous and organic phase result in two particularities of this system compared with classical emulsion polymerization: i) bimodal particle size distribution, and ii) unusual dependence of reaction rate on temperature.
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页码:2949 / 2955
页数:7
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