Effect of the adsorption component of the disjoining pressure on foam film drainage

被引：3

作者：

Karakashev, Stoyan I. ^{[1
]}

Nguyen, Anh V. ^{[2
]}

Tsekov, Roumen ^{[1
]}

机构：

[1] Univ Sofia, Dept Phys Chem, Sofia 1164, Bulgaria

[2] Univ Queensland, Sch Chem Engn, Brisbane, Qld 4072, Australia

来源：

COLLOID JOURNAL | 2013年 / 75卷 / 02期

基金：

澳大利亚研究理事会;

关键词：

SODIUM DODECYL-SULFATE; THIN LIQUID-FILMS; HYDROPHOBIC FORCES; AQUEOUS-ELECTROLYTE; LONG-RANGE; THERMODYNAMICS; ATTRACTION; REPULSION; MIXTURES;

D O I：

10.1134/S1061933X13020099

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 present work is trying to explain a discrepancy between experimental observations of the drainage of foam films from aqueous solutions of sodium dodecylsulfate and the theoretical DLVO-accomplished Reynolds model. It is shown that, due to overlap of the film adsorption layers, an adsorption component of the disjoining pressure is important for the present system. The pre-exponential factor of this adsorption component was obtained by fitting to the experimental drainage curves. It corresponds to a slight repulsion, which reduces not only the thinning velocity as observed experimentally but corrects also the film equilibrium thickness.

引用

页码：176 / 180

页数：5

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