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Quantitative conversion of poly(acrylamide) into poly(vinylamine) by a modified Hofmann degradation

✍ Scribed by Niyazi Biçak; A. Sezai Saraç; Güneş Koza; Tülay Atay; Filiz Şekal

Book ID
103956571
Publisher
Elsevier Science
Year
1993
Weight
286 KB
Volume
21
Category
Article
ISSN
0923-1137

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✦ Synopsis

Very high molecular weight poly(vinylamine) was prepared by a modified Hofmann rearrangement of poly(acrylamide). The reaction was carried out in ethylene glycol using the monosodium salt of this solvent and bromine instead of sodium hypohalogenides in the original Hofmann rearrangement. Poly(vinyl 2-hydroxyethyluretbane) was formed as an intermediate product. Hydrolysis of the latter gave poly(vinylamine) with quantitative conversions.

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## Abstract A modified poly(acrylamide‐__co__‐methyl methacrylate‐__co__‐vinyl amine‐__co__‐acrylic acid) [poly(AAm‐__co__‐MMA‐__co__‐VAm‐__co__‐AAc)] hydrogel was prepared by the Hofmann degradation of poly(acrylamide‐__co__‐methyl methacrylate) [poly(AAm‐__co__‐MMA)] copolymer. The hydrogel was c