On the origin of the remarkable stability of aqueous foams stabilised by nanoparticles: link with microscopic surface properties

We have performed a quantitative study of the coarsening of foams stabilised by partially hydrophobic silica nanoparticles. We have used a variety of techniques: optical and electron microscopy, microfluidics, and multiple light scattering. Using earlier studies of planar particle monolayers, we hav...

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Bibliographic Details
Published in:Soft matter 2008-01, Vol.4 (7), p.1531-1535
Main Authors: Cervantes Martinez, A., Rio, E., Delon, G., Saint-Jalmes, A., Langevin, D., Binks, B. P.
Format: Article
Language:English
Subjects:
Condensed Matter
Physics
Soft Condensed Matter
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Summary:We have performed a quantitative study of the coarsening of foams stabilised by partially hydrophobic silica nanoparticles. We have used a variety of techniques: optical and electron microscopy, microfluidics, and multiple light scattering. Using earlier studies of planar particle monolayers, we have been able to correlate the interfacial properties and the macroscopic temporal evolution of the foam. This has shed light on the origin of the absence of coarsening of particle-stabilised foams. Such particle-stabilised foams appear to be the only known foam system where coarsening is inhibited by surface elasticity.
ISSN:1744-683X
1744-6848
DOI:10.1039/b804177f