Syntheses of Vinyl Sulfoxide/Vinyl Acetate-Type Copolymers
作者:
Kiyokazu Imai,
Tomoo Shiomi,
Yasuyuki Tezuka,
Keizo Takahashi,
期刊:
Journal of Macromolecular Science: Part A - Chemistry
(Taylor Available online 1985)
卷期:
Volume 22,
issue 10
页码: 1347-1358
ISSN:0022-233X
年代: 1985
DOI:10.1080/00222338508063339
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The homopolymerization of a series of alkyl vinyl sulfoxides (CH2˭CHSOR; R = CH3(MVSO), C2H5(EVSO), t-C4H9(BVSO)) and their copolymerization with vinyl acetate (VAc) with 2,2′-azobisisobutyronitrile (AIBN) as initiator at 60°C was attempted. MVSO was found to homopolymerize radically, but EVSO and BVSO were not. Poly-MVSO is soluble in chloroform, methanol, DMSO, and water, but insoluble in acetone and benzene. MVSO and EVSO were found to copolymerize with VAc, but BVSO was not. The copolymerization parameters obtained for both systems were as follows; r1(MVSO) = 2.23, r2(VAc) = 0.09, and r1(EVSO) = 3.40, r2(VAc) = 0.11, respectively. MVSO/vinyl alcohol (VA) copolymers were obtained through the saponification of MVSO/VAc copolymers by sodium hydroxide in methanol. The solubility of MVSO/VAc and of MVSO/VA copolymers toward various solvents was examined, and it was observed that the sulfoxide comonomer has a tendency to give amphiphilicit to poly(vinyl acetate) and poly(vinyl alcohol). The 24 mol% MVSO containing VAc copolymer is soluble in both benzene and water.
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