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

Research output: Contribution to journalArticle

Abstract

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).

Original languageEnglish
Pages (from-to)1877-1885
Number of pages9
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume39
Issue number11
DOIs
Publication statusPublished - 2001 Jun 1

Fingerprint

Alkalies
Carboxylic Acids
Carboxylic acids
Grafts
Copolymerization
Salts
Acids
Graft copolymers
Esterification
Methanol
Potassium
Sodium
Hot Temperature
Temperature
polymethacrylic acid

Keywords

  • Graft copolymerization
  • Polycondensation
  • Polylactic acid
  • Thermal polymerization

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry

Cite this

Graft copolymerization induced by thermal reactions of the binary alkali salts of poly(carboxylic acid)-brominated carboxylic acid in bulk. / Kasashima, Yoshio; Shinoda, Koichi; Matsushima, Hiroshi; Shitagaki, Satoko; Inoki, Mari; Akutsu, Fumihiko; Shimura, Tadashi; Tsuchiya, Masaomi.

In: Journal of Polymer Science, Part A: Polymer Chemistry, Vol. 39, No. 11, 01.06.2001, p. 1877-1885.

Research output: Contribution to journalArticle

Kasashima, Yoshio ; Shinoda, Koichi ; Matsushima, Hiroshi ; Shitagaki, Satoko ; Inoki, Mari ; Akutsu, Fumihiko ; Shimura, Tadashi ; Tsuchiya, Masaomi. / Graft copolymerization induced by thermal reactions of the binary alkali salts of poly(carboxylic acid)-brominated carboxylic acid in bulk. In: Journal of Polymer Science, Part A: Polymer Chemistry. 2001 ; Vol. 39, No. 11. pp. 1877-1885.
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