SYNTHESIS AND PROPERTIES OF NOVEL FUNCTIONALLY SUBSTITUTED CARBOSILANE POLYMERS

Poly[1-(3'-cyanopropyl)-1-methyl-1-silabutane], poly[1-methyl-1-[3'-(glycidyloxy)propyl]-1-silabutane], poly[1-methyl-1-[3'-(triethoxysilyl)propyl]-1-silabutane], poly[1-methyl-1-(4',7',10'-trioxaun-decanyl)-1-silabutane], poly[1-methyl-1-(4',7',10',13'-tetraoxatetradecanyl)-1-silabutane], poly[1-methyl-1-[3'-(phenyloxy)propyl]-1-silabutane],and poly[1-methyl-1-[3'-(pentafluorophenyl)propyl]-1-silabutane) have been prepared by the platinum-catalyzed hydrosilation graft reactions between poly(1-methyl-1-silabutane) and the appropriate functional alkene. These polymers have been characterized by H-1, C-13, F-19 (where appropriate), and Si-29 NMR as well as by FT-IR and UV spectroscopy. The molecular weight distributions of these polymers have been determined by gel permeation chromatography (GPC), their thermal stabilities by thermogravimetric analysis (TGA), and their glass transition temperatures (T(g)'s) by differential scanning calorimetry.