波谱学杂志 ›› 1987, Vol. 4 ›› Issue (2): 145-154.

• 研究论文 • 上一篇    下一篇

水解聚丙烯酰胺的13C-NMR测定

袁东武, 朱善农, 杨小震   

  1. 中国科学院 化学研究所
  • 收稿日期:1986-12-26 出版日期:1987-06-05 发布日期:2018-01-22

THE ASSIGNMENTS OF 13C-NMR SPECTRA OF HYDROLYZED POLYACRYLAMIDE

Yuan Dongwu, Zhu Shannong, Yang Xiaozhen   

  1. Institute of Chemistry, Academia Sininca
  • Received:1986-12-26 Online:1987-06-05 Published:2018-01-22

摘要: 本文研究了在不同pH条件下P(AM/AA)溶液的13C-NMR谱,观察了谱峰的化学位移变化和分裂情况,对比了均聚物PAM和PAA的13C-NMR谱,对P(AM/AA)13C-NMR谱的各共振峰进行了归属,证实P(AM/AA)共聚物C=O碳峰的分裂只与分子链共聚序列结构相关,并得出了C=O碳分裂峰所对应的三单元序列结构。

关键词: 聚丙烯酰胺, 水解聚丙烯酰胺, 碳13核磁共振, 序列结构, 归属

Abstract: The structures of P(AM/AA) copolymers were determined from 13C-NMR spectra. Based on the observation and comparison of chemical shifts between homopolymers PAM、PAA and copolymers P(AM/AA), the assignments of the spectral lines of P(AM/AA) were established. The split peaks of carbonyl carbons in P(AM/AA) were related to the contribution of triad copolymeric sequence distribution in the molecular chains.

Key words: Polyacrylamide, Hydrolyzed polyacrylamide, NMR, 13C-NMR, Sequence structure, Assignment