OSMOTIC-PRESSURE OF LATEX DISPERSIONS

被引：103

作者：

BONNETGONNET, C ^{[1
]}

BELLONI, L ^{[1
]}

CABANE, B ^{[1
]}

机构：

[1] CENS,SERV CHIM MOLEC,F-91191 GIF SUR YVETTE,FRANCE

来源：

LANGMUIR | 1994年 / 10卷 / 11期

关键词：

D O I：

10.1021/la00023a019

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The resistance of aqueous latex dispersions to removal of water has been measured through osmotic compression. For pure polystyrene particles stabilized with sulfate groups anchored at their surfaces, the measured pressures match the predictions of models for the interactions of charged spheres in water. For copolymer particles (styrene-butyl acrylate) covered with acrylic acid sequences linked to the core polymers, the measured pressures are considerably higher than the predictions. This strong resistance to dehydration originates from polyelectrolytes which are released by the particles or extend from their surfaces into the aqueous phase. Consequently the behavior of such dispersions is determined by the content of the aqueous phase that separates the particles.

引用

页码：4012 / 4021

页数：10

共 37 条

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Bell GM., 1970, T FARADAY SOC, V66, P500, DOI [10.1039/tf9706600500, DOI 10.1039/TF9706600500]

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