A novel technique for preparing organophilic silica by water-in-oil microemulsions

Polymer Bulletin - Tập 24 - Trang 173-179 - 1990
P. Espiard1, J. E. Mark1, A. Guyot2
1Department of Chemistry and the Polymer Research Center, University of Cincinnati, Cincinnati, USA
2Laboratoire des Materiaux Organiques, CNRS, Vernaison, France

Tóm tắt

A novel technique to prepare ultramicro spherical silica particles containing vinyl groups on their surfaces is presented. This process is a combination of the sol-gel technique and the water-in-oil microemulsion technique in which hydrolysis and condensation of TEOS [Si(OEt)4] and MPS (trimethoxysilylpropylmethacrylate) take place. Spherical silica particles with a size range from 20 to 70 nm were obtained and the surface concentrations of the double bonds per nm2 were from 4 to 7.

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