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Aqueous foams stabilized solely by particles

Stocco, A.; Rio, E.; Binks, B. P.; Langevin, D.

Authors

A. Stocco

E. Rio

D. Langevin



Abstract

Foams are dispersions of bubbles in liquids, often water. They are frequently stabilized by surfactant or polymer, but like Pickering emulsions, they can be also stabilized solely by particles. If the particles have a moderate hydrophobicity, the foams can be extremely stable (lifetimes of the order of years). Due to technical preparation difficulties, very few studies can be found in the literature to date. We will discuss the origin of these difficulties. We will also describe experiments using partially hydrophobic fumed silica particles, in which the foam properties were correlated with the properties of spread and adsorbed layers of these particles at the air-water interface. These combined experiments allowed us to define the conditions necessary to stop bubble disproportionation.

Journal Article Type Article
Publication Date Feb 21, 2011
Journal SOFT MATTER
Print ISSN 1744-683X
Electronic ISSN 1744-6848
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 7
Issue 4
Pages 1260-1267
APA6 Citation Stocco, A., Rio, E., Binks, B. P., & Langevin, D. (2011). Aqueous foams stabilized solely by particles. Soft matter, 7(4), 1260-1267. doi:10.1039/c0sm01290d
DOI https://doi.org/10.1039/c0sm01290d
Keywords Air-water-interface; Silica; Nanoparticles; Fluid interfaces; Emulsions; Bubbles; Hydrophobicity
Publisher URL http://pubs.rsc.org/en/Content/ArticleLanding/2011/SM/c0sm01290d#!divAbstract
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