addition polymerization

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addition polymerization

[ə¦dish·ən pə‚lim·ə·rə′zā·shən]
(organic chemistry)
A reaction initiated by an anion, cation, or radical in which a large number of monomer units are added rapidly (a chain reaction) until terminated by some mechanism, forming a high-molecular-weight polymer in a very short time; an example is the free-radical polymerization of propylene to polypropylene.
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References in periodicals archive ?
LP is a branching chain reaction which can be considered as taking place in four main stages: (1) chain initiation, (2) chain propagation, (3) chain branching and (4) chain termination.
The new kinetics scheme also composes of chain initiation, chain propagation, chain transfer, and chain deactivation reactions; and, the new chain initiation reaction is only initiated by propylene.