The oil-waterinterfacial tension is reduced when nanoparticles segregate to the oil-waterinterface and this segregation is governed by the interparticle interactions ofthe nanoparticles. In this study, water-soluble hydrophilic-oleophiliccopolymers were grafted from silica nanoparticles using a living radical atomtransfer polymerization in order to tune the interparticles interaction. Wehave studied the nature of interparticle interactions of such hybridnanoparticles using pendant drop interfacial tension measurements, and theirstructure using small angle X-ray scattering. Amphiphilic copolymers graftedfrom nanoparticles promote their segregation to the interface and make itpossible to reduce the oil-water interfacial tension significantly. Moreover,stability of the oil-water emulsions was tested by applying the hybridnanoparticles as well as the hybrid nanoparticle and traditional dispersants.

Copolymer grafted nanoparticle-based oil dispersants

247th National Meeting (2014)

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