Foam stability

被引：30

作者：

Hédreul, C ^{[1
]}

Frens, G ^{[1
]}

机构：

[1] Delft Univ Technol, Phys Chem Lab, NL-2628 BL Delft, Netherlands

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2001年 / 186卷 / 1-2期

关键词：

foam stability; black film; fluctuations;

D O I：

10.1016/S0927-7757(01)00489-7

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 formation of the Newton Black Film (NBF) in single vertical soap films with varied electrolyte concentrations was studied. A 'slow' and a 'rapid' regime for NBF formation could be identified. These results were interpreted in terms of a modified Scheludko-Vrij model. In analogy with the DLVO theory fur coagulation kinetics, we consider the effect of the disjoining pressure on the spontaneous growth of thickness fluctuations in thin films. The repulsion between the film surfaces and the elasticity of the films have a damping effect on these fluctuations. The formation of the NBF by a spontaneously growing fluctuation explains why surfactants stabilise foams and can make them persistent. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：73 / 82

页数：10

共 20 条

[1] Forces and structure in thin liquid soap films [J].

Bergeron, V .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1999, 11 (19) :R215-R238

[2] PHASE SEPARATION BY SPINODAL DECOMPOSITION IN ISOTROPIC SYSTEMS [J].

CAHN, JW .

JOURNAL OF CHEMICAL PHYSICS, 1965, 42 (01) :93-+

[3] ELLIPSOMETRIC INVESTIGATION OF BLACK SOAP FILMS [J].

DENENGELSEN, D ;

FRENS, G .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1974, 70 (02) :237-248

[4] The role of structure in rupturing Newton-black soap films: dynamics of a molecular bilayer [J].

Evers, LJ ;

Nijman, EJ ;

Frens, J .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 1999, 149 (1-3) :521-527

[5] Bursting dynamics of thin free liquid films from Newtonian and viscoelastic solutions [J].

Evers, LJ ;

Shulepov, SY ;

Frens, G .

PHYSICAL REVIEW LETTERS, 1997, 79 (24) :4850-4853

[6]

Exerowa D., 1998, FOAM FOAM FILMS THEO

[7] MARGINAL REGENERATION OF A MOBILE VERTICAL FREE LIQUID-FILM [J].

HUDALES, JBM ;

STEIN, HN .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1990, 138 (02) :354-364

[8] CONTACT ANGLE AND DEPTH OF FREE-ENERGY MINIMUM IN THIN LIQUID FILMS . THEIR MEASUREMENT AND INTERPRETATION [J].

HUISMAN, F ;

MYSELS, KJ .

JOURNAL OF PHYSICAL CHEMISTRY, 1969, 73 (03) :489-&

[9] STABILITY AND SOME PROPERTIES OF 2ND BLACK FILM [J].

JONES, MN ;

MYSELS, KJ ;

SCHOLTEN, PC .

TRANSACTIONS OF THE FARADAY SOCIETY, 1966, 62 (521P) :1336-&

[10]

Mysels K. J., 1959, Soap films: Studies of their Thinning and a Bibliography

← 1 2 →