THE STABILITY OF SILICA IN NONAQUEOUS MEDIA BY POLY-2-VINYL PYRIDINE POLY-TERT-BUTYL STYRENE BLOCK COPOLYMERS .1. ADSORPTION-ISOTHERMS AND STABILITY MEASUREMENTS

被引：9

作者：

DESILVA, GPHL

LUCKHAM, PF

TADROS, TF

机构：

[1] ICI PLC,AGROCHEM,JEALOTTS HILL RES STN,BRACKNELL RG12 6EY,BERKS,ENGLAND

[2] UNIV LONDON IMPERIAL COLL SCI & TECHNOL,DEPT CHEM ENGN & CHEM TECHNOL,LONDON SW7 2BY,ENGLAND

来源：

COLLOIDS AND SURFACES | 1990年 / 50卷 / 50期

关键词：

Block Copolymers--Adsorption - Colloids--Stability - Copolymers--Molecular Weight;

D O I：

10.1016/0166-6622(90)80268-9

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 adsorption of AB block copolymers of poly-2-vinyl pyridine/poly-tert-butyl styrene onto silica particles has been studied. The poly-2-vinyl pyridine adsorbs strongly to silica whilst the poly-tert-butyl styrene (which hardly adsorbs on silica) extends away from the particle surface. Adsorbance values of between 1.0 and 2.5 mg m-2 were measured. The colloidal stability of the silica dispersion following copolymer adsorption was also measured by a turbidimetric technique. All the copolymers imparted stability to the silica, the highest degree of stability being found with the lowest molecular weight copolymer. © 1990.

引用

页码：251 / 261

页数：11

共 14 条

[1]

BARROW MJ, J POLYM SCI PC, V1, P1269

[2]

COWELL C, 1978, J CHEM SOC F1, V74, P4337

[3]

DESILVA GPHL, 1989, POLYM COMMUN, V30, P220

[4] THE STABILITY OF SILICA IN NONAQUEOUS MEDIA BY POLY-2-VINYL PYRIDINE POLY-TERT-BUTYL STYRENE BLOCK COPOLYMERS .2. RHEOLOGICAL STUDIES [J].