EFFECT OF EMULSIFIER TYPE ON THE COPOLYMERIZATION OF STYRENE AND ACRYLIC-ACID

被引：12

作者：

CORONAGALVAN, S ^{[1
]}

MARTINEZGOMEZ, A ^{[1
]}

CASTANEDAPEREZ, J ^{[1
]}

PUIG, JE ^{[1
]}

SCHULZ, PC ^{[1
]}

DOMINGUEZ, JM ^{[1
]}

RUANO, A ^{[1
]}

机构：

[1] INST MEXICANO PETR,MEXICO CITY 07730,DF,MEXICO

来源：

POLYMER ENGINEERING AND SCIENCE | 1991年 / 31卷 / 06期

关键词：

D O I：

10.1002/pen.760310604

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this work we report the emulsion copolymerization of styrene and acrylic acid using a cationic (cetyltrimethylammonium bromide or CTAB) or an anionic (sodium dodecylsulfate or SDS) emulsifier. Latexes were stable and monodisperse with spherical particles of approximately 100 nm for the CTAB latex and of approximately 70 nm for the SDS latex. However, a random copolymer was produced with CTAB whereas a "blocky" copolymer was obtained with SDS. Here we propose a mechanism to explain these structural differences in terms of the relative reactivities of styrene and acrylic acid and of their initial location and distribution in the SDS and CTAB emulsions.

引用

页码：404 / 409

页数：6

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