Abstract
AbstractAn investigation has been made on the polymerization of methyl methacrylate (MMA), with the following initiator systems: 1. binary system of metallic tin and benzyl chloride, 2. binary system of reduced nickel and tin tetrachloride, and 3. benzyltin compounds. All systems were found to initiate the radical polymerization of MMA.The rate of polymerization (Rp) of MMA initiated with tetrabenzyltin in benzene at 80°C may be expressed as follows: The overall activation energy for this polymerization was estimated to be 12.5 kcal/mole. Tetrabenzyltin was also observed to serve as a photosensitizer in the polymerization of MMA.It was also found that the system metallic tin/benzyl chloride induced selectively the cationic polymerization of isobutyl vinyl ether as well as the radical polymerization of MMA.
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