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Issue 23, 2011
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Reversible emulsification controlled by ionic surfactants and responsive nanoparticles

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Abstract

We identify a new mechanism for the spontaneous formation of an oil-in-water emulsion. Our classical density functional, which describes electrostatics, ionic surface reactions, and nanoparticle adsorption, predicts kinetically and even thermodynamically stable emulsion droplets with a tunable mesoscopic size. Our results closely match recent experiments [S. Sacanna et al., Phys. Rev. Lett., 2007, 98, 158301 and D. Kraft et al., J. Phys. Chem. B, 2010, 114, 10347], and may open new pathways for the reversible dispersion of particle-coated droplets that are desired in the fields of catalysis, controlled drug delivery and particle synthesis.

Graphical abstract: Reversible emulsification controlled by ionic surfactants and responsive nanoparticles

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Article information


Submitted
28 Apr 2011
Accepted
28 Jun 2011
First published
02 Aug 2011

Soft Matter, 2011,7, 11093-11097
Article type
Paper

Reversible emulsification controlled by ionic surfactants and responsive nanoparticles

J. Zwanikken, K. Ioannidou, D. Kraft and R. van Roij, Soft Matter, 2011, 7, 11093
DOI: 10.1039/C1SM05779K

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