CHARACTERIZATION OF THE SURFACTANT LAYER ON ALUMINA IN WATER-DIOXANE MIXTURES

被引：8

作者：

ESUMI, K

KOBAYASHI, T

MEGURO, K

机构：

[1] Department of Applied Chemistry, Institute of Colloid and Interface Science, Science University of Tokyo, Shinjuku-ku, Tokyo, 162, Kagurazaka

来源：

COLLOIDS AND SURFACES | 1991年 / 54卷 / 3-4期

关键词：

D O I：

10.1016/0166-6622(91)80059-W

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：

The surfactant layer formed on alumina by addition of lithium perfluorooctane sulfonate (LiFOS) was characterized in the water-dioxane system. Alumina exhibited a dispersion-flocculation-redispersion process by the addition of LiFOS as a result of the formation of a bilayer at low, but not high dioxane levels. The behavior was well correlated with zeta potential measurements and the amount of adsorbed LiFOS. Furthermore, fluorescence and electron spin resonance measurements indicate that the micropolarity and microviscosity of a LiFOS adsorbed layer on alumina are significantly altered on increasing the content of dioxane in solution.

引用

页码：189 / 196

页数：8

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