Telechelic poly(3-glycidoxypropyltrimethoxysilane) (PGPTMS) with acetate and methacrylate end groups was successfully synthesized by an efficient and solvent-free approach, with anhydrides (acetic anhydride (AA) and methacrylic anhydride (MA)), by cationic ring-opening polymerization of 3 glycidoxypropyltrimetho-xysilane (GPTMS), using an ecologic solid catalyst Maghnite-H+ (Mag-H+), instead of electrophilic catalysts, such as, Bronsted and Lewis acids which are very noxious and corrosive. Mag-H+ is a montmorillonite sheet silicate clay exchanged with protons. The structure of the obtained macromonomers was confirmed by Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance (NMR) and UV-visible spectroscopy. The presence of the methacrylate end groups of bis-macromonomers was determined by UV-visible spectroscopy. In order to find the optimal reaction conditions, effects of reaction time and the amount of anhydrides (AA and MA) on the yield of macromonomers were investigated.
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