COMPETITIVE ADSORPTION OF POLYMERS AND SURFACTANTS AT THE SOLID/LIQUID INTERFACE

被引：25

作者：

HARRISON, IM ^{[1
]}

MEADOWS, J ^{[1
]}

ROBB, ID ^{[1
]}

WILLIAMS, PA ^{[1
]}

机构：

[1] NE WALES INST,CTR WATER SOLUBLE POLYMERS,CONNAHS QUAY CH5 4BR,CLWYD,WALES

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1995年 / 91卷 / 21期

关键词：

D O I：

10.1039/ft9959103919

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 competitive adsorption of three cationic polymers (JR polymers) and a cationic surfactant (CTAB) onto a silica surface from a low ionic strength medium has been investigated. Competition between polymers showed that smaller molecules were adsorbed initially, preventing the subsequent adsorption of larger polymers. Adsorption from combined polymer and surfactant systems showed that the smallest polymer (JR 125) was excluded from the surface, the intermediate molecular mass polymer (JR 400) was almost unaffected by the surfactant and the largest molecular mass polymer (JR 30M) was partially excluded from the surface. These experiments showed the importance of having sufficient bonding groups on the polymer and the relative rates of diffusion to the surface.

引用

页码：3919 / 3923

页数：5