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Langmuir. 2007 Jul 3;23(14):7436-9. Epub 2007 May 31.

Enhanced stabilization of emulsions due to surfactant-induced nanoparticle flocculation.

Author information

1
Surfactant and Colloid Group, Department of Chemistry, University of Hull, Hull, HU6 7RX, U.K. b.p.binks@hull.ac.uk

Abstract

We have shown recently (Binks, B. P.; Rodrigues, J. A.; Frith, W. J. Langmuir 2007, 23, 3626) that, for mixtures of negatively charged silica nanoparticles and cationic surfactant, oil-in-water emulsions are most stable to creaming and coalescence at conditions of maximum flocculation of particles by surfactant in aqueous dispersions alone. Here, we extend the idea using positively charged silica particles in mixtures with anionic surfactant.

PMID:
17536846
DOI:
10.1021/la700597k

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