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Radical polymerization - Wikipedia, the free encyclopedia (606 words) |
 | Radical polymerization is a type of polymerization in which the reactive center of a polymer chain consists of a radical. |
 | This often involves a metal-ion such as in the reaction of a ferrous ion with hydrogen peroxide to a ferric ion in which a hydroxyl radical is formed. |
 | Taking the polymerization of ethene as an example, the free radical reaction mechanism can be divided in to three stages: initiation, chain propagation and chain termination. |
| Living polymerization - Wikipedia, the free encyclopedia (1107 words) |
 | The reversible reaction of the cobalt macrocycle with the growing radical is known as cobalt carbon bonding and in some cases leads to a form of living polymerization. |
 | Atom transfer radical polymerization or ATRP involves the chain initiation of free radical polymerization by a halogenated organic species in the presence of a metal halide species. |
 | After inititation and propagation, the radical on the chain active chain terminus is reversibly terminated (with the halide) by reacting with the catalyst in its higher oxidation state. |