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Persulphate initiated polymerisation of methacrylamide—I: Kinetics and molecular weight dependences

✍ Scribed by D.R. Burfield; S.C. Ng

Publisher
Elsevier Science
Year
1976
Tongue
English
Weight
398 KB
Volume
12
Category
Article
ISSN
0014-3057

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✦ Synopsis

Abstraet--A kinetic study of the aqueous persulphate initiated polymerisation of methacrylamide has shown that the rate of polymerisation is represented by the equation Rp = k [M] [I] a/z where the overall rate constant, k = 1.3 x 10 9 exp (-18,400/RT) 11/2 mol-1/~ s-1. Chain transfer with monomer, where Cu = 5.4 × 10 -3 at 60 °, is shown to be the dominant transfer step. Comparison with kinetic studies of the analogous acrylamide polymerisation shed doubt on the 'cage effect' interpretation of complex orders with respect to monomer. An alternative explanation is proposed.

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