Photopolymerization initiated by charge-transfer complex: IX—Photopolymerization of methyl methacrylate initiated by α-picoline-sulphur dioxide charge-transfer complex: Effect of solvent

Abstract

Photopolymerization of methyl methacrylate was studied at 35°C using α-picoline-sulphur dioxide, (α-Pi-SO₂) charge-transfer complex as the photoinitiator in the presence of several solvents. It was observed that the polymerization proceeded via a radical mechanism and the termination was initiator-dependent. Chain termination via degradative chain (initiator) transfer appears to be significant here.