Grafting onto Wool. IX. Graft Copolymerization of Vinyl Monomers by Use of Vanadium Oxyacetylacetonate as Initiator
作者:
B.N. Misra,
InderjeetKaur Mehta,
DeepakS. Sood,
期刊:
Journal of Macromolecular Science: Part A - Chemistry
(Taylor Available online 1980)
卷期:
Volume 14,
issue 8
页码: 1255-1268
ISSN:0022-233X
年代: 1980
DOI:10.1080/00222338008056744
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Methyl methacrylate (MMA), acrylic acid (AAc), and vinyl acetate (VAc) were graft copolymerized onto Himachali wool in an aqueous medium by using vanadium oxyacetyl acetonate as initiator. Graft copolymerization was studied at 45, 55, 65, and 75°C for various reaction periods. The percentage of grafting was determined as functions of concentration of monomers, concentration of initiator, time, and temperature. The maximum percentage of grafting with each monomer occurred at 55°. Several grafting experiments were carried out in the presence of various additives which include HNO3, DMSO, and pyridine. Nitric acid was found to promote grafting of MMA. All these additives had adverse effects on grafting of VAc and AAc. MMA, VAc, and AAc were found to differ in reactivity toward grafting and followed the order MMA > AAc > VAc.
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