Interaction of synthetic polyampholytes with disperse particles

被引：12
|
作者：
Musabekov, KB
Tusupbaev, NK
Kudaibergenov, SE
机构：
[1] Kazak State Natl Univ, Dept High Mol Cpds, Almaty 480012, Kazakhstan
[2] Kazak State Natl Univ, Dept Colloid Chem, Almaty 480012, Kazakhstan
来源：
MACROMOLECULAR CHEMISTRY AND PHYSICS | 1998年 / 199卷 / 03期
关键词：
D O I：
10.1002/macp.1998.021990311
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The flocculating and stabilizing effect of synthetic polyampholytes with respect to negatively charged model latex systems as well as real mineral dispersions have been considered. It has been shown that the effectiveness of flocculation of disperse particles is maximal at the isoelectric point of polyampholytes. The experimental results obtained on interaction of negatively charged latex particles with synthetic polyampholytes, together with theoretical considerations of Joanny, allowed one to suggest a mechanism of flocculation of colloid dispersions by polyampholytes. It has been established that the interaction of butadiene-styrene latex with polyampholytes is accompanied by the removal of emulsifiers from the surface of latex particles, which in turn leads to a strong hydrophobization of the system and its precipitation.
引用
收藏
页码：401 / 408
页数：8
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