Electrostatic interactions between charged dielectric particles in an electrolyte solution: constant potential boundary conditions.

Derbenev, Ivan N; Filippov, Anatoly V; Stace, Anthony J; Besley, Elena · Soft Matter · 2018

basic_science · Level V

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Abstract

The problem of electrostatic interactions between colloidal particles in an electrolyte solution has been solved within the Debye-Hückel approximation using the boundary condition of constant potential. The model has been validated in two independent ways - by considering the limiting cases obtained from DLVO theory and comparison with the available experimental data. The presented methodology provides the final part of a complete theory of pairwise electrostatic interactions between spherical colloidal particles; one that embraces all possible chemical scenarios within the boundary conditions of constant potential and constant charge.