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Poly[N-(2-hydroxypropyl)methacrylamide]—I. Radical polymerization and copolymerization

✍ Scribed by J. Kopeček; H. Baẑilová

Publisher
Elsevier Science
Year
1973
Tongue
English
Weight
377 KB
Volume
9
Category
Article
ISSN
0014-3057

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✦ Synopsis

The radical polymerization of N-(2-hydroxypropyl)methacrylamide was investigated kinetieally. The hydrophilic character of the polymerization medium was found to affect the rate of decomposition of the initiator [2,2'-azobis(methyl isobutyrate)] and the course of primary radical termination. The presence of the --OH group in the alkyl group attached to the nitrogen atom leads to an increase in the molecular weight of the polymer in comparison with polymers of N-alkyl methacrylamides. This phenomenon was interpreted in terms of the possibility of a polymeranalogous transesteramidation and of an increased possibility of transfer to monomer and polymer. The copolymerization parameters of N-(2-hydroxypropyl)methacrylamide (Mr) with methyl methacrylate and styrene were determined; in the first case, rl = 0"84 -I-0'05, r2 = 0.66 4-0'07; in the second case, rl = 0.53 ~ 0'08, r2 = 1.72 4-0'19.

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