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Stabilization of O/W Emulsions by Polymer Surfactant Mixture

Author(s): Shailendra Kumar Parihar, Ashok K. Goswami and A. M. Raina

Mixed emulsifters consisting of a nonionic (PVP) or cationic potymer (JR-400) and ionic surfactant (anionic sodium dodecylsulphate, SDS and cationic dodecyltrimethylammonium bromide, DTAB) have been found to produce greater stabilizing effects than single polymer or surfactant taken separately as emulsitiers. Greater emulsion stability of such systems is ensured by the presence of a protective layer formed by the polymer and charged species resulting from polymer/surfactant interaction. This result is of significant practical importance. The combination of surfactant and polymers improved the desired properties of the products because addition of a polymer enhances the adsorption of surfactants to a surface.

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