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Diffusion-controlled termination radical copolymerization

The rate of copolymerization, unlike the copolymer composition, depends on the initiation and termination steps as well as on the propagation steps. In the usual case both monomers combine efficiently with the initiator radicals and the initiation rate is independent of the feed composition. Two different models, based on whether termination is diffusion-controlled, have been used to derive expressions for the rate of copolymerization. The chemical-controlled termination model assumed that termination proceeds with chemical control, that is, termination is not diffusion-controlled [Walling, 1949]. But this model is of only historical interest since it is well established that termination in radical polymerization is generally diffusion-controlled [Atherton and North, 1962 Barb, 1953 Braun and Czerwinski, 1987 North, 1963 O Driscoll et al., 1967 Prochazka and Kratochvil, 1983] (Sec. 3-10b). [Pg.505]


See other pages where Diffusion-controlled termination radical copolymerization is mentioned: [Pg.51]    [Pg.462]    [Pg.3]    [Pg.568]    [Pg.213]    [Pg.192]    [Pg.192]    [Pg.192]    [Pg.145]    [Pg.243]    [Pg.1901]    [Pg.203]   
See also in sourсe #XX -- [ Pg.505 ]

See also in sourсe #XX -- [ Pg.505 ]




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Controlled radical

Copolymerization, termination

Diffusion control

Diffusion controlled

Diffusion radicals

Radical copolymerization

Radical termination

Radicals terminators

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