CONTACT-ANGLE, FILM, AND LINE TENSION OF FOAM FILMS .1. STATIONARY AND DYNAMIC CONTACT-ANGLE MEASUREMENTS

被引：23

作者：

IVANOV, IB

DIMITROV, AS

NIKOLOV, AD

DENKOV, ND

KRALCHEVSKY, PA

机构：

[1] Laboratory of Thermodynamics and Physico-Chemical Hydrodynamics, University of Sofia, Faculty of Chemistry, Sofia

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 1992年 / 151卷 / 02期

关键词：

D O I：

10.1016/0021-9797(92)90493-6

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：

It is established experimentally that slowly shrinking small air bubbles attached to a liquid-air interface form a nonequilibrium (dynamic) contact angle. Aqueous solutions of sodium dodecyl sulfate (SDS) are used at two different concentrations of added electrolyte. A black thin liquid film is formed at the top of the bubble. The experimental cell used allows measurements with shrinking and expanding bubbles as well as with bubbles of constant equatorial radius. Hysteresis of the contact angle was observed. The results show that the shrinking of the contact line (advancing meniscus) causes deviation of the contact angle from its equilibrium value. The reliability of some previous work interpreting the change in contact angle with the radius of shrinking bubbles as a line tension effect is discussed. © 1992.

引用

页码：446 / 461

页数：16

共 53 条

[1]

[Anonymous], 1982, MOL THEORY CAPILLARI

[2] CONTACT INTERACTION BETWEEN FLUID PARTICLES IN LIQUID-MEDIA .3. GENERALIZED LINE TENSION THEORY [J].

BABAK, VG .

COLLOIDS AND SURFACES, 1987, 25 (2-4) :205-230

[3]

Beyer H., 1971, Jena Review, V16, P82

[4] A NOVEL STRATEGY FOR DETERMINING LINE TENSION FROM THE SHAPE OF A LIQUID MENISCUS NEAR A STRIPWISE HETEROGENEOUS WALL [J].

BORUVKA, L ;

GAYDOS, J ;

NEUMANN, AW .

COLLOIDS AND SURFACES, 1990, 43 (2-4) :307-326

[5] AUTOMATION OF THE CAPILLARY RISE TECHNIQUE FOR MEASURING CONTACT ANGLES [J].

BUDZIAK, CJ ;

NEUMANN, AW .

COLLOIDS AND SURFACES, 1990, 43 (2-4) :279-293

[6] CURVED FLUID INTERFACES .2. GENERALIZED NEUMANN FORMULA [J].

BUFF, FP ;

SALTSBURG, H .

JOURNAL OF CHEMICAL PHYSICS, 1957, 26 (01) :23-31

[7]

CHURAEV NV, 1985, J COLLOID INTERF SCI, V3, P301

[8] CONTACT ANGLES IN THIN LIQUID-FILMS .2. CONTACT-ANGLE MEASUREMENTS IN NEWTON BLACK SOAP FILMS [J].

DEFEIJTER, JA ;

VRIJ, A .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1978, 64 (02) :269-277

[9]

DEFEIJTER JA, 1973, THESIS U UTRECHT

[10]

DEFEIJTER JA, 1972, J ELECTROANAL CHEM, V47, P9

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