Impact of lipopolysaccharide coating on clay particle wettability

被引：2

作者：

Chen, G

Zhu, HL

机构：

[1] Washington State Univ, Dept Crop & Soil Sci, Pullman, WA 99164 USA

[2] Qingdao Haichuan Biol Renovat Res Ctr Nat Med, Qingdao 266061, Peoples R China

来源：

COLLOIDS AND SURFACES B-BIOINTERFACES | 2004年 / 35卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Kaolinite; Na-montmorillonite; wettability; lipopolysaccharide;

D O I：

10.1016/j.colsurfb.2004.03.003

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

Impact of lipopolysaccharide coating on kaolinite and Na-montmorillonite wettability was investigated. Kaolinite had greater diiodomethane contact angles, smaller water and formamide contact angles than Na-montmorillonite. After lipopolysaccharide coating, diiodomethane and formamide contact angles decreased, while water contact angles increased for both kaolinite and Na-montmorillonite. The decrease and increase in liquid contact angles after lipopolysaccharide coating were most pronounced for lipopolysaccharide extracted from Pseudomonas aeruginosa, followed by Pseudomonas fluorescens and Echerichia coli. Clay particle wettability was determined by particle surface thermodynamic properties. Both kaolinite and Na-montmorillonite exhibited a monopolar surface and the monopolarity decreased after lipopolysaccharide coating, indicating an increase in hydration or surface wetness. The origins of interactions of clay particles with water molecules were discussed and related to clay particle water wettability. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：143 / 147

页数：5

共 22 条

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