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Branching in the base catalyzed hydrogen transfer polymerization of acrylamide in n-methyl-2-pyrrolidone at 100°C

✍ Scribed by G. Camino; S.L. Lim; L. Trossarelli

Publisher: Elsevier Science
Year: 1977
Tongue: English
Weight: 222 KB
Volume: 13
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(77)90129-x

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✦ Synopsis

The structure of poly(fl-alanines) prepared by hydrogen transfer polymerization of acrylamide in N-methyl-2-pyrrolidone, has been investigated by end-group analysis and gas-chromatographic separation of hydrolysis products. Evidence is given that ,6',ff-iminodipropionic acid residues are present in the polymer chains as branching units, their proportion being greater in oligomers at the early stage of polymerization and decreasing with the stepwise growth of the polymer A mechanism is proposed for the formation and elimination of these branching units.

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