Diffuse Double-Layer Interaction between Two Identical Spherical Colloidal Particles

Author: Ohshima H.  

Publisher: Academic Press

ISSN: 0021-9797

Source: Journal of Colloid and Interface Science, Vol.225, Iss.1, 2000-05, pp. : 204-208

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Abstract

A simple method is given for calculating the potential energy of the diffuse double-layer interaction between two identical spherical colloidal particles in a symmetrical electrolyte solution with the help of Derjaguin's approximation. This method uses accurate analytic expressions for the corresponding interaction energy between two parallel similar plates obtained previously (Colloids Surf. A Physicochem. Eng. Asp. 146, 213 (1999); J. Colloid Interface Sci. 212, 130 (1999)). Agreement with numerical data provided by Honig and Mul (J. Colloid Interface Sci. 36, 258 (1971)) is excellent particularly for small particle separations.