organic chemistry - radical polymerization
Free-radical polymerization is a method of polymerization by which a polymer forms by the successive addition of free-radical building blocks. Free radicals can be formed by a number of different mechanisms, usually involving separate initiator molecules. Following its generation, the initiating free radical adds monomer units, thereby growing the polymer chain. Illustrate the first two steps of the mechanism when the monomer is ethene and the initiator molecule is di cumyl peroxide.