3种聚酰亚胺分子的核磁共振碳谱及氢谱的分析  

Analysis of Three Kinds of Ployimides by Carbon-13 and Proton Nuclear Magnetic Resonance Spectroscopy

作　　者：王建俐 张建国[1] 李滨耀[1] 冯之榴[1] 

机构地区：[1]中国科学院长春应用化学研究所,长春130022

出　　处：《分析化学》1996年第5期515-520,共6页Chinese Journal of Analytical Chemistry

摘　　要：本文报道了3种高性能聚酰亚胺（PKI，PEI和POI）的核磁共振定量碳谱及氢谱。利用这3种样品化学结构的相似性，根据PEI的DEPT谱，PEI和POI的二维同核化学位移相关谱（2D-COSY），碳氢自旋晶格弛豫时间以及化学位移的理论计算，详细分析并归属了3种聚酰亚胺的碳谱峰和氢谱峰，同时验证了其重复单元结构的正确性。The quantitative 1H-NMR and 13C-NMR spectra were reported for three kinds of polyimides (POI, PEI and PKI). The distortionless enhancement by polarization transfer (DEPT) data for PEI and the two-dimensional chemical shift correlated spectroscopy (2D-COSY) for PEI and POI were recorded. According to the similarity of the repeating units of these polyimides, as well as the substitution effect and the spin-lattice relaxation time, the peaks in carbon-13 and proton spectra were assigned in detail. The structural units of these polyimides were determined.

关 键 词：核磁共振 化学位移 聚酰亚胺 

分 类 号：TQ323.7[化学工程—合成树脂塑料工业]