Synthesis and Functionalization of Silicone Hydride Copolymer with Allyl Methacrylate via Hydrosilylation Method

摘要

Silicone hydride copolymer was functionalized with allyl methacrylate under the platinum catalyzed hydrosilylation reaction to yield comb-like polydimethylsiloxane grafted with methacrylate. The reaction was monitored via attenuated total reflectance Fourier Transform InfraRed spectroscopy. Silicone hydride copolymer was synthesized in advance under cationic equilibrium ring opening polymerization under acidic condition. The peaks obtained from attenuated total reflectance Fourier Transform InfraRed spectrum and Nuclear Magnetic Resonance spectra corresponded to silicone hydride copolymer structure and ascertained that the silicone hydride copolymer synthesis was completed after 72 hrs of reaction. Functionalization process of silicone hydride copolymer had proceeded according to the Chalk-Harrod mechanism. The disappearance of Si-H peak at 2157 cm~(-1) had been observed in the attenuated total reflectance Fourier Transform InfraRed spectra which indicated that the functionalization process was completed after 48 hrs of reaction.