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Effect of the Dielectric Constant on the Double Layer on Clays

Published online by Cambridge University Press:  02 April 2024

A. K. Helmy  and
I. M. Natale
A. K. Helmy
Affiliation:
Universidad Nacional del Sur, 8000 Bahia Blanca, Argentina
I. M. Natale
Affiliation:
Universidad Nacional del Sur, 8000 Bahia Blanca, Argentina
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Abstract

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Electric potentials as a function of distance were calculated for a model of the double layer on clays in which a surface zone a few water molecules thick has a low dielectric constant. This zone is followed by bulk water with a normal dielectric constant. The double layer potentials were found to be lower than those obtained from the Gouy model, in which water has a normal dielectric constant throughout the double layer.

Keywords

Dielectric constantDouble layer potentialGouy modelMontmorilloniteWater
Type
Research Article
Information
Clays and Clay Minerals , Volume 33 , Issue 4 , August 1985 , pp. 329 - 332
Copyright
Copyright © 1985, The Clay Minerals Society

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