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.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1996年第5期515-520,共6页
Chinese Journal of Analytical Chemistry
关键词
核磁共振
化学位移
聚酰亚胺
Nuclear magnetic resonance spectroscopy,spin-lattice relaxation time, chemical shift correlated spectroscopy,polyimide
