Studies on Vinyl Formate:III. Effect of Polymerization Temperature on the Properties of Polyvinyl Formate
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概要
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The changes of the physical properties of polyvinyl formate with polymerization temperatures were studied from the measurements of density, glass temperature, solubility, rate of gelation, X-ray and infra-red spectrum. The specimen polymerized at low temperature showed a sharp line on the X-ray diagram and the drawn sample gave a fiber diagram, and the identity period of 5 Å obtained was shown to be related to a syndiotactic structure of polymer. The infra-red absorption bands of 1420, 1272, 1026 and 924 cm<SUP>-1</SUP> obtained from the measurements of spectrum could be related to the crystallization of the polymer.<BR>It was concluded from the results obtained for polyvinyl formate that a decrease of polymerization temperature was generally related to an increase of syndiotacticity of polymer.
- 公益社団法人 高分子学会の論文
公益社団法人 高分子学会 | 論文
- 情報の入口--高分子センサ-とトランスデュ-サ- (情報化社会と高分子)
- 高分子科学最近の進歩--メルトレオロジ-(伸長粘度)
- 高分子系の相分離--特にポリマ-ブレンドについて
- 導電性高分子の磁気緩和--NMRT-1〓1の周波数依存性
- 多機能性高分子の合成 (化学修飾による多機能性高分子)