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  • Title: Phase inversion of the Pickering emulsions stabilized by plate-shaped clay particles.
    Author: Nonomura Y, Kobayashi N.
    Journal: J Colloid Interface Sci; 2009 Feb 15; 330(2):463-6. PubMed ID: 18992900.
    Abstract:
    We investigated the phase inversion of Pickering emulsions stabilized by plate-shaped clay particles. Addition of water induced a phase inversion from a water-in-oil (W/O) emulsion to an oil-in-water (O/W) emulsion when the amount of the oil phase exceeded a limiting amount of oil absorption to solid particles. On the other hand, a phase inversion from a powdery state to an O/W emulsion state through an oil-separated state is observed when the amount of an oil phase is less than the limiting amount of the oil absorption. Interestingly, the oil separated is re-dispersed as emulsion droplets into the O/W emulsion phase. This type of phase inversion, which is a feature of the Pickering emulsions stabilized by the clay particles, is caused by a change in the aggregate structures of particles.
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