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Encyclopedia > Radical polymerization

Radical polymerization is a type of polymerization in which the propagation head of a polymer chain consists of a radical. A polymer is a generic term used to describe a substantially long molecule. ... The word propagation can mean: Multiplication or increase, as by natural reproduction. ... The word radical can have two distinct meanings in chemistry. ...


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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.
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