Graft copolymerization induced by thermal reactions of the binary alkali salts of poly(carboxylic acid)-brominated carboxylic acid in bulk

Yoshio Kasashima, Koichi Shinoda, Hiroshi Matsushima, Satoko Shitagaki, Mari Inoki, Fumihiko Akutsu, Tadashi Shimura, Masaomi Tsuchiya

研究成果: Article査読

抄録

Thermal reactions of the binary alkali salts of poly(carboxylic acid)-brominated carboxylic acid such as sodium or potassium poly(4-vinylbenzoate)-2-bromopropanoate [Na or K (PVBA-2-BPA)] in bulk were investigated. A methanol solution of binary acids was prepared by fixing the molar ratio of the repeating unit of polymeric acid to the fraction of brominated carboxylic acid. The binary salts were prepared by the neutralization of the binary acid solution. The product of the thermal reaction followed by esterification was identified as a graft copolymer containing PVBA in the main chain and polylactic acid in the side chain. The reaction of 1/15 K (PVBA-2-BPA) at 120°C for 2 h yielded the highest percentage of grafting (300%). The grafting proceeded gradually for the initial 2 h and then somewhat. Reactivity of the K salt was higher than that of the corresponding Na salt. The thermal reaction of 1/10 K [polymethacrylate-2-BPA (PMA-2-BPA)] at 120 °C for 2 h also yielded a graft copolymer, and the percentage of grafting was 300%. However, reaction temperatures higher than 120°C caused homopolycondensation of K 2-BPA prior to grafting, and homopolycondensation occurred prior to grafting in the reaction with Na (PMA-2-BPA).

本文言語English
ページ(範囲)1877-1885
ページ数9
ジャーナルJournal of Polymer Science, Part A: Polymer Chemistry
39
11
DOI
出版ステータスPublished - 2001 6月 1

ASJC Scopus subject areas

  • ポリマーおよびプラスチック
  • 有機化学
  • 材料化学

フィンガープリント

「Graft copolymerization induced by thermal reactions of the binary alkali salts of poly(carboxylic acid)-brominated carboxylic acid in bulk」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル