Effect of ionic surfactants on drainage and equilibrium thickness of emulsion films

被引：20

作者：

Karakashev, Stoyan I. ^{[1
]}

Manev, Emil D. ^{[2
]}

Tsekov, Roumen ^{[1
]}

Nguyen, Anh V. ^{[1
]}

机构：

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

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

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2008年 / 318卷 / 02期

基金：

澳大利亚研究理事会;

关键词：

emulsion films; DLVO forces; surfactants; kinetics of film thinning;

D O I：

10.1016/j.jcis.2007.10.053

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：

This paper presents new theoretical and experimental results that quantify the role of surfactant adsorption and the related interfacial tension changes and interfacial forces in the emulsion film drainage and equilibrium. The experimental results were obtained with plane-parallel microscopic films from aqueous sodium dodecyl sulphate solutions formed between two toluene droplets using an improved micro-interferometric technique. The comparison between the theory and the experimental data show that the emulsion film drainage and equilibrium are controlled by the DLVO interfacial forces. The effect of interfacial viscosity and interfacial tension gradient (the Marangoni number) on the film drainage is also significant. (C) 2007 Elsevier Inc. All rights reserved.

引用

页码：358 / 364

页数：7

共 29 条

[1]

Adamson A. W., 1997, Physical Chemistry of Surfaces

[2] EFFECTS OF SURFACE VISCOSITY ON AXISYMMETRIC DRAINAGE OF PLANAR LIQUID-FILMS [J].

BARBER, AD ;

HARTLAND, S .

CANADIAN JOURNAL OF CHEMICAL ENGINEERING, 1976, 54 (04) :279-284

[3]

Binks B.P., 1998, MODERN ASPECTS EMULS

[4] Effect of surfactants on the film drainage [J].

Danov, KD ;

Valkovska, DS ;

Ivanov, IB .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1999, 211 (02) :291-303

[5]

Derjaguin B., 1941, Prog. Surf. Sci, V14, P633, DOI DOI 10.1016/0079-6816(93)90013-L

[6]

Edwards David A., 1991, Interfacial Transport Processes and Rheology

[7]

Exerowa D., 1997, Foam and Foam Films: Theory, Experiment, Application

[8]

Israelachvili JN, 2011, INTERMOLECULAR AND SURFACE FORCES, 3RD EDITION, P1

[9]

ISRAELACHVILI JN, 1981, COLLOID SURFACE, V2, P287

[10]

Ivanov I.B., 1988, THIN LIQUID FILMS FU

← 1 2 3 →