Abstract: A platinum-based catalyst supported on glass fiber grafted with1,3,5,7-tetramethyl-1,3,5,7-tetravinyl cyclotetrasiloxane (D4Vi) was prepared and evaluated for the hydrosilylation reaction of styrene and methyldiethoxysilane. The silanization of the glass fiber was carried out with methyldichlorosilane. D4Vi was then anchored on the modified fiber withSi-Hbonds through a hydrosilylation reaction mediated by a Pt(0)-D4Vi complex solution catalyst. Fourier transform infrared spectroscopy, field emission scanning electron microscopy,X-rayenergy dispersion spectroscopy, and thermogravimetric data showed that D4Vi was covalently bonded onto the fiber surface. The very high density of D4Vi grafting confers a strong hydrophobic character to the modified fiber surface. Fairly good catalytic activity for the hydrosilylation reaction between styrene and methyldiethoxysilane was observed on this catalyst.

Key words: self-healing composite, glass fiber, platinum, supported catalyst, styrene, methyldiethoxysilane, hydrosilylation