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Novel stabilization of emulsions via the heteroaggregation of nanoparticles

Binks, Bernard P.; Liu, Wenhui; Rodrigues, Jhonny A.


Wenhui Liu

Jhonny A. Rodrigues


The stabilization of emulsions by a mixture of oppositely charged nanoparticles is investigated in relation to their behavior in water before emulsification. No emulsion can be prepared using either negatively or positively charged silica particles alone because the particles are too hydrophilic. Certain mixtures of the two particle types lead to heteroaggregation and a lowering of the net charge. Such mixtures, of increased hydrophobicity as verified by contact angle measurements, are capable of forming stable oil-in-water emulsions of excellent coalescence stability. The increased viscosity of the continuous phase also contributes to such stability.


Binks, B. P., Liu, W., & Rodrigues, J. A. (2008). Novel stabilization of emulsions via the heteroaggregation of nanoparticles. Langmuir : the ACS journal of surfaces and colloids, 24(9), 4443-4446.

Journal Article Type Article
Acceptance Date May 6, 2008
Publication Date May 6, 2008
Print ISSN 0743-7463
Electronic ISSN 1520-5827
Publisher American Chemical Society
Peer Reviewed Peer Reviewed
Volume 24
Issue 9
Pages 4443-4446
Keywords Spectroscopy; Electrochemistry; General Materials Science; Surfaces and Interfaces; Condensed Matter Physics
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