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Surface charge reversal and hydration forces explained by ionic dispersion forces and surface hydration

Parsons, Drew; Ninham, Barry

Description

The first direct measurements of forces between mica surfaces in electrolytes showed an apparent short range repulsion additional to the predictions of DLVO theory. The origins of such " secondary hydration forces" have remained a mystery. We show they can be explained as an repulsive entropic force appearing due to a hydration surface layer with longer range secondary hydration forces appearing as a consequence of ionic dispersion forces. Ionic dispersion forces are calculated from dynamic...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
URI: http://hdl.handle.net/1885/59281
Source: Colloids and Surfaces A: Physicochemical and Engineering Aspects
DOI: 10.1016/j.colsurfa.2010.12.025

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