Structure analysis of polyamic acid prepared from pyromellitic dianhydride and 4,4'-diaminodiphenyl ether by 13C-NMR.

DOI NDL Digital Collections Web Site Web Site 19 References Open Access

Bibliographic Information

Other Title
  • 炭素‐１３核磁気共鳴法によるピロメリット酸二無水物及び４，４′‐ジアミノジフェニルエーテルから成るポリアミド酸の構造解析
  • タンソ 13 カク ジキ キョウメイホウ ニ ヨル ピロメリットサン 2 ムス
  • 炭素-13 核磁気共鳴法によるピロメリット酸二無水物及び4,4'-ジアミノジフェニルエーテルから成るポリアミド酸の構造解析

Search this article

Description

The structure analysis of polyamic acid prepared from pyromellitic dianhydride (PMDA) and 4, 4'-diaminodiphenyl ether (DDE) was studied by 13C-NMR. The 13C-NMR signals of model compounds prepared from PMDA and aniline were assiglmed by 2D-NMR such as C-H cosy and coloc, followed the assignments of 13C-NMR signal of the amic acid oligomer prepared from PMDA and DDE. The 13C-NMR signals of polyamic acid were assigned by the application of the 13C-NMR signal assignments of model compounds and amic acid oligomer, and the structures of polyamic acid such as the meta/para ratio of amide bonds. The average length and the end-group of molecular chains were clarified.

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 42 (4), 209-214, 1993

    The Japan Society for Analytical Chemistry

References(19)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top