Photopolymerization of vinyl monomers using benzophenone‐tetrahydrofuran initiation system and aldehydes at low temperatures

摘要

AbstractThe photopolymerizations of vinyl trifluoroacetate (VTFAc), vinyl acetate (VAc), and methyl methacrylate (MMA) using the initiation system benzophenone–tetrahydrofuran were studied at low temperatures. At −78°C the rate of polymerization of VTFAc was higher than that of VAc, while MMA, which was solidified, did not polymerize. After melting the irradiated solid mixture the polymerization occurred at 4°C. The photoinduced polymerization of VTFAc occurred in the presence of butylaldehyde or isobutylaldehyde at −70°C. The degrees of polymerization and syndiotacticities of the polymers prepared were inve