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

共 27 条

[1]

[Anonymous], STAT MECH PHASES

[2] Structural forces in thin films made from polyelectrolyte solutions [J].

Asnacios, A ;

Espert, A ;

Colin, A ;

Langevin, D .

PHYSICAL REVIEW LETTERS, 1997, 78 (26) :4974-4977

[3] CLOUD POINT PHENOMENA IN THE PHASE-BEHAVIOR OF ALKYL POLYGLUCOSIDES IN WATER [J].

BALZER, D .

LANGMUIR, 1993, 9 (12) :3375-3384

[4] Stratification kinetics of polyelectrolyte solutions confined in thin films -: art. no. 217803 [J].

Beltrán, CM ;

Langevin, D .

PHYSICAL REVIEW LETTERS, 2005, 94 (21)

[5] Stratification phenomena in thin liquid films containing polyelectrolytes and stabilized by ionic surfactants [J].

Beltrán, CM ;

Guillot, S ;

Langevin, D .

MACROMOLECULES, 2003, 36 (22) :8506-8512

[6] EQUILIBRIUM MEASUREMENTS OF OSCILLATORY DISJOINING PRESSURES IN AQUEOUS FOAM FILMS [J].

BERGERON, V ;

RADKE, CJ .

LANGMUIR, 1992, 8 (12) :3020-3026

[7] Disjoining pressure measurements for foam films stabilized by a nonionic sugar-based surfactant [J].

Bergeron, V ;

Waltermo, A ;

Claesson, PM .

LANGMUIR, 1996, 12 (05) :1336-1342

[8] Disjoining pressure isotherms for oil-water-oil emulsion films [J].

Binks, BP ;

Cho, WG ;

Fletcher, PDI .

LANGMUIR, 1997, 13 (26) :7180-7185

[9]

Churaev N. V., 1987, SURFACE FORCES

[10]

Derjaguin B.V., 1989, Theory of stability of colloids and thin films

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