ESR Studies of Crosslinking
Enhanced crosslinking occurs via a chain reaction involving both a polymer and a monomer. An example of this reaction is the curing of an unsaturated polyester-styrene mixture. The initiation of a chain reaction via a single radical allows the formation of a sequence of crosslinks. An ESR study of enhanced crosslinking of polyolefins with acrylic acid438) and allyl ethers of Novolac with vinyl monomers in the presence of cationic catalysts was made1531). Using ESR Charlesby1188) studied the role of S, Se and Te during radiation-induced crosslinking of polyethylene.