ESR spectroscopic pursuit of radical accumulation processes in the proliferous benzyl methacrylate/neopentyl glycol dimethacrylate copolymerizations in the presence of lauryl mercaptan as chain transfer agent

The anomalous popcorn formation in the presence of a large amount of lauryl mercaptan as a chain transfer agent was explored in the free-radical crosslinking copolymerization of benzyl methacrylate with neopentyl glycol dimethacrylate, Thus, the radical accumulation during proliferous polymerization was pursued ESR-spectroscopically and a brief mechanistic discussion is described. (C) 2001 Elsevier Science Ltd. All rights reserved.