期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 9, 期 48, 页码 6455-6462出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/b710226g
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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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