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Article Dans Une Revue Physical Chemistry Chemical Physics Année : 2007

Pickering emulsions with stimulable particles: from highly- to weakly-covered interfaces

Résumé

We study oil-in-water emulsions stabilised by pH-sensitive colloidal silica or latex particles. Depending on the composition of the continuous phase, the same type of particles and the same emulsification process lead to emulsions characterised either by large drops densely covered by the particles, or to small droplets which are weakly covered. The two kinetically stable states can be tuned reversibly by using pH or salinity as compositional stimuli. We examine the emulsions' behaviour in these two limiting cases and we discuss the possible mechanisms allowing stabilisation, especially in the case of low surface coverage.

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hal-00284064 , version 1 (02-06-2008)

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Florent Gautier, Mathieu Destribats, Romain Perrier-Cornet, Jean-François Dechézelles, Joanna Giermanska, et al.. Pickering emulsions with stimulable particles: from highly- to weakly-covered interfaces. Physical Chemistry Chemical Physics, 2007, 9 (48), pp.6455-6462. ⟨10.1039/b710226g⟩. ⟨hal-00284064⟩
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