Electrostatic effects in films stabilised by non-ionic surfactants

被引：10

作者：

Marquez-Beltran, Cesar ^{[1
]}

Langevin, Dominique ^{[1
]}

机构：

[1] Univ Paris 11, Lab Phys Solides, F-91405 Orsay, France

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2007年 / 312卷 / 01期

关键词：

thin liquid films; disjoining pressure; non-ionic surfactants;

D O I：

10.1016/j.jcis.2006.10.015

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 disjoining pressure 17 of films of aqueous octyl-beta-glucoside (beta-C(8)G(1)) solutions with and without salt was measured as a function of the film thickness by means of a thin film pressure balance. The analysis of the experiments confirms the presence of an electrostatic double layer which dominates the long-range interactions as found in previous experiments with other non-ionic surfactants in the presence of added salt. In the absence of salt, we find a local ion concentration much higher than that of the residual ionic impurities present in the bulk solution. (c) 2006 Elsevier Inc. All rights reserved.

引用

页码：47 / 51

页数：5

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