THE COAGULATION MECHANISM OF HEAT-SENSITIVE LATTICES

被引：4

作者：

GOOSSENS, JWS ^{[1
]}

VOGT, HG ^{[1
]}

机构：

[1] BAYER AG,DIV RUBBER,W-4047 DORMAGEN,GERMANY

来源：

COLLOIDS AND SURFACES | 1990年 / 51卷

关键词：

D O I：

10.1016/0166-6622(90)80137-S

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The coagulation mechanism of carboxylated latices, heat sensitized by addition of a polyetherpolysiloxane, are investigated. First, the parameters influencing the temperature at which the latex coagulates on heating are determined. From this, a model for the coagulation mechanism of the heat sensitive latices is deduced. The postulated mechanism is based on the formation of a complex by hydrogen bonding between ether groups in the polyether undissociated carboxyl groups at the surface of the latex particles. This complex formation increases with temperature and reduces the steric stability of the latex particles. This reduction in steric stability is demonstrated by direct measurement of the repulsion between the particles as a function of their distance. © 1990.

引用

页码：129 / 139

页数：11

共 19 条

[1] SOME FACTORS AFFECTING MOLECULAR ASSOCIATION OF POLY(ETHYLENE OXIDE) + POLY)ACRYLIC ACID) IN AQUEOUS SOLUTION [J].