Inter-particle forces arising from adsorbed bolaform surfactants in colloidal suspensions

被引:25
作者
Leong, YK [1 ]
机构
[1] UNIV MELBOURNE,DEPT CHEM ENGN,PARKVILLE,VIC 3052,AUSTRALIA
来源
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1997年 / 93卷 / 01期
关键词
D O I
10.1039/a604953b
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 effects of adsorbed bolaform surfactants, [HOOC(CH2)(n)COOH], on the yield stress-pH behaviour of concentrated aqueous ZrO2 suspensions are reported. Both the bolaform concentration and its chain length, n, increase the yield stress. A ten-fold increase in the maximum yield stress, tau(ymax), is recorded for n greater than or equal to 10. The results are explained in terms of a particle bridging model. The increase in tau(ymax) reaches a limit at the critical dimer concentration.
引用
收藏
页码:105 / 109
页数:5
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