γ-Ray-induced polymerization of α-haloacrylic acids

The γ‐ray induced polymerizations of α‐chloroacrylic acid, mp 66°C, and α‐bromo‐acrylic acid, mp 72°C, were investigated in the temperature range from 35°C to 85°C. An analysis of polymerization kinetics was made, and results were similar to those reported in the literature for other vinyl monomers....

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Bibliographic Details
Published in:Journal of polymer science. Part A-1, Polymer chemistry Polymer chemistry, 1971-04, Vol.9 (4), p.911-918
Main Authors: Watanabe, Haruhiko, Murano, Masao
Format: Article
Language:English
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Summary:The γ‐ray induced polymerizations of α‐chloroacrylic acid, mp 66°C, and α‐bromo‐acrylic acid, mp 72°C, were investigated in the temperature range from 35°C to 85°C. An analysis of polymerization kinetics was made, and results were similar to those reported in the literature for other vinyl monomers. On heating of the polymer obtained, elimination of hydrogen halide takes place, and intramolecular lactone formation is observed. The rate of lactone formation of poly(α‐chloroacrylic acid) obtained in the solid‐state polymerization was found to be higher than that in the liquid state, because a highly isotactic configuration of polymers, tends to be formed in the solid‐state polymerization, and elimination of hydrogen chloride is facilitated with an isotactic 5 2 helix structure.
ISSN:0449-296X
1542-9350
DOI:10.1002/pol.1971.150090407