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Issue 29, 2013
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Regulation of charged reverse micelles on particle charging in nonpolar media

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Abstract

By considering the mechanism of preferential adsorption, we systemically investigated the charging behavior of spherical particles in nonpolar media by the regulation of charged inverse micelles. Using the nonlinear Poisson–Boltzmann equation, we simulated the effects of micelle concentrations, particle concentrations, and particle sizes on the surface potential of spheres at the thermodynamic equilibrium of the system. As a result, we found two different micelle concentration-dependent regions for the surface potential of spheres which can be explained in terms of the mechanism of preferential adsorption and the electrostatic properties of charged reverse micelles between the particle surface and the double layer. Additionally, similar results were observed in an experiment for studying zeta potential of colloidal particles dispersed in AOT (sodium di-2-ethylhexyl sulfosuccinate)-dodecane solution.

Graphical abstract: Regulation of charged reverse micelles on particle charging in nonpolar media

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Publication details

The article was received on 20 Mar 2013, accepted on 16 May 2013 and first published on 16 May 2013


Article type: Paper
DOI: 10.1039/C3CP51212F
Phys. Chem. Chem. Phys., 2013,15, 12227-12234

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    Regulation of charged reverse micelles on particle charging in nonpolar media

    H. Cao, N. Lu, B. Ding and M. Qi, Phys. Chem. Chem. Phys., 2013, 15, 12227
    DOI: 10.1039/C3CP51212F

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