Surface-tension-driven flow due to the adsorption and desorption of colloidal particles

被引：12

作者：

Casson, K ^{[1
]}

Johnson, D ^{[1
]}

机构：

[1] Univ Alabama, Dept Chem Engn, Tuscaloosa, AL 35487 USA

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2001年 / 242卷 / 02期

关键词：

interfacial tension; colloidal particles; interfacial tension gradients; capillary charge; Marangoni flow;

D O I：

10.1006/jcis.2001.7870

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：

When a dilute colloidal suspension of 50-mum polyamide particles is exposed to a deformable interface, spontaneous flow occurs. This flow is orderly, reproducible, and shows a proportional dependence on particle concentration. The same type of flow was also observed in a silicon oil suspension. Placing a glass plate on the interface dampens the flow, eventually extinguishing it completely. Upon removing the plate, the flow resumes. This leads to the belief that a new surface effect is being observed and may be important in a number of industrial applications where a free interface of a colloidal suspension is present. (C) 2001 Academic Press.

引用

页码：279 / 283

页数：5

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