Particle-stabilised foams: an interfacial study

By A. Stocco, W. Drenckhan, E. Rio, D. Langevin, B. Binks. 2009

214 citations recorded by the source corpus.

In an attempt to elucidate the remarkable stability of foams generated from dispersions of partially hydrophobic nanoparticles (fumed silica), we present investigations into the static and dilational properties of the gas–liquid interfaces of such dispersions. By relating the dynamic surface tension γ(t) and the dilational elasticity E measured using an oscillating bubble device, we confirm that the Gibbs stability criterion E > γ/2 against foam coarsening is fulfilled. We complement these studies using ellipsometry and Brewster angle microscopy, which provide evidence for a pronounced adsorption barrier for the particles and a network-like structure in the interface at sufficiently high concentrations. We observe this structure also in freely suspended films drawn from the same particle dispersions.

Subfields: Materials Chemistry, Ocean Engineering, Organic Chemistry

View Paper: https://www.semanticscholar.org/paper/a839ebec2ee797bd039479cdd4a09a4f0582b045

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In Materials Chemistry

1. R. Rubio
2. F. Ortega
3. E. Guzmán
4. A. Maestro

In Organic Chemistry

1. R. Rubio
2. F. Ortega
3. E. Guzmán
4. A. Maestro

Citations in the corpus

• Contact angle of micro- and nanoparticles at fluid interfaces (2014, background): “[72] Stocco A, Drenckhan W, Rio E, Langevin D, Binks BP.”