Charged colloidal particles and small mobile ions near the oil-water interface: destruction of colloidal double layer and ionic charge separation.

Abstract

We study suspensions of hydrophobic charged colloids in a demixed oil-water solvent with salt by means of a modified Poisson-Boltzmann theory, taking into account image-charge effects and partitioning of the monovalent ions. We find that the ion's aversion for oil can deform the double layers of the oil-dispersed colloids, which qualitatively affects the… (More)

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