Particle behaviour at horizontal and vertical fluid interfaces

被引：52

作者：

Horozov, TS ^{[1
]}

Binks, BP ^{[1
]}

机构：

[1] Univ Hull, Dept Chem, Surfactant & Colloid Grp, Kingston Upon Hull HU6 7RX, N Humberside, England

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2005年 / 267卷 / 1-3期

关键词：

horizontal and vertical particle monolayers; two-dimensional sedimentation; electro-dipping force; capillary attraction; surface charge density;

D O I：

10.1016/j.colsurfa.2005.06.037

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：

Silica particle monolayers at horizontal and vertical silicone oil-water and air-water interfaces at ambient and low pH have been studied by microscopy. Very long-range repulsion between adsorbed particles has been detected. The two-dimensional particle sedimentation observed in the case of vertical monolayers has been analysed and reasonable values for the surface charge density at the particle-air (oil) interface have been obtained. It is found that the charge density at the particle surface in contact with air is about two times smaller than that in contact with silicone oil, in accord with the results obtained by others for a similar system but using a totally different approach. (c) 2005 Elsevier B.V. All rights reserved.

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收藏

页码：64 / 73

页数：10

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