Copolymers of Wheat Starch and Polyacrylonitrile. Effect of Aqueous-Organic Solvent Systems on Copolymer Composition
作者:
RobertC. Burr,
GeorgeF. Fanta,
C.R. Russell,
C.E. Rist,
期刊:
Journal of Macromolecular Science: Part A - Chemistry
(Taylor Available online 1968)
卷期:
Volume 2,
issue 1
页码: 93-101
ISSN:0022-233X
年代: 1968
DOI:10.1080/00222336808053350
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Starch-polyacrylonitrile graft copolymers prepared in a number of aqueous-organic solvent systems with ceric ammonium nitrate as the initiator had more grafted chains than those prepared in water alone, and these were of lower molecular weight. Substitution of methanol for 80% of the water produced grafted chains with a molecular weight of 15,700 and a grafting frequency of 253 anhydroglucose units per graft. The influence of catalyst concentration, increased reaction temperature, and sodium sulfate on the composition of the copolymer were investigated for the methanol-water system.
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