Stabilization of water-in-water pickering emulsion using silica particles
발표자
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초록
내용
Water-water interfaces can be formed by inducing phase separation of immiscible hydrophilic polymers in water, and if these systems are effectively stabilized, they can form water-in-water emulsions. Because all phases are composed of water, it can be used in food, cosmetic, and biomedical fields that require high biocompatibility and eco-friendliness, but due to very low interfacial tension, colloidal particles used as stabilizers are easily desorbed from the interface, thereby making it difficult to achieve high emulsion stability. Accordingly, we here introduced surface-modified silica particles, which are highly biocompatible stabilizers and successfully stabilized water-in-water emulsions whose dispersed droplets are densely packed by the particles. In addition, we also confirmed that the size of droplets can be controlled by varying the size and amount of silica particles. These biocompatibility, encapsulation and size selectivity features make them suitable for payload release.