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Studies of the Solution Polymerization of Vinyl Acetate in the Aqueous Solution of Partially Acetylated Polyvinyl Alcohol. V. The Radiation‐Induced Graft Copolymerization
Author(s) -
Lin ChenChong
Publication year - 1961
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.196100015
Subject(s) - copolymer , chemistry , polyvinyl alcohol , vinyl acetate , hydroquinone , aqueous solution , polymerization , polymer chemistry , polyvinyl acetate , vinyl alcohol , irradiation , acetylation , nuclear chemistry , organic chemistry , polymer , biochemistry , physics , nuclear physics , gene
Graft copolymerization is induced to a considerable extent when vinyl acetate is polymerized in an aqueous solution of polyvinyl alcohol or partially acetylated polyvinyl alcohol under gamma irradiation. Such γ‐induced graft copolymerization is affected by hydroquinone. The graft efficiency, fac , increases as PVA concentration is increased. However, it reaches a critical value at 4% and decreases again in more concentrated solutions. On the other hand, the graft efficiency, fa , decreases with increasing PVA concentration. It is found that fac decrease with increasing field intensity of irradiation at a definite total exposure dose. The mechanism consistent with these observations is presented.