Stability of wetting films of F108 triblock copolymer aqueous solutions on quartz

被引：5

作者：

Esipova, NE ^{[1
]}

Itskov, SV ^{[1
]}

Churaev, NV ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Phys Chem, Leninskii Pr 31, Moscow 119991, Russia

来源：

COLLOID JOURNAL | 2002年 / 64卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1023/A:1021593904712

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：

Wetting films of nonionic F108 triblock copolymer aqueous solutions with concentrations below the CMC containing an electrolyte (NaCl) and formed on a quartz substrate are studied. Primary thick films are disclosed to be metastable. Their temporal stability is explained by the electrostatic repulsive forces. Film thinning and transition to a stable state occur slowly at low electrolyte concentrations (C-Nacl = 10(-5) and 10(-3) M, respectively) and instantly at its high concentrations (C-Nacl = 10(-2) and 10(-1) M, respectively). The stability of thin films is explained by the steric repulsive forces.

引用

页码：699 / 705

页数：7

共 28 条

[21] DLVO and non-DLVO surface forces in foam films from amphiphilic block copolymers
Sedev, R
Exerowa, D
[J]. ADVANCES IN COLLOID AND INTERFACE SCIENCE, 1999, 83 (1-3) : 111 - 136
[22] SERGEEVA IP, 2001, KOLLOID ZH, V63, P510
[23] Sheludko A, 1967, ADV COLLOID INTERFAC, V1, P391, DOI [DOI 10.1016/0001-8686(67)85001-2, 10.1016/0001-8686(67)85001-2]
[24] SVITOVA TF, COMMUNICATION
[25] INFLUENCE OF TEMPERATURE AND ELECTROLYTES ON THE ADSORPTION OF POLY(ETHYLENE OXIDE)-POLY(PROPYLENE OXIDE) BLOCK CO-POLYMER ON POLYSTYRENE LATEX AND ON THE STABILITY OF THE POLYMER-COATED PARTICLES
TADROS, TF
VINCENT, B
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1980, 84 (12) : 1575 - 1580
[26] KINETIC AND EQUILIBRIUM ASPECTS OF BLOCK COPOLYMER ADSORPTION
TIBERG, F
MALMSTEN, M
LINSE, P
LINDMAN, B
[J]. LANGMUIR, 1991, 7 (11) : 2723 - 2730
[27] ADSORPTION OF ETHYLENE-OXIDE PROPYLENE-OXIDE COPOLYMERS ON HYDROPHOBICITY GRADIENT SURFACES
VANDESTEEG, LMA
GOLANDER, CG
[J]. COLLOIDS AND SURFACES, 1991, 55 : 105 - 119
[28] ZORIN Z, 1987, COLLOID SURFACE, V22, P147

← 1 2 3 →