Assignment of 1H NMR spectrum and investigation of oxidative degradation of poly(ethylenimine) using 1H and 13C 1-D and 2-D NMR
Assignment of 1H NMR spectrum and investigation of oxidative degradation of poly(ethylenimine) using 1H and 13C 1-D and 2-D NMR
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DOI：
10.1002/pi.2049
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发表时间：
2006-09-01
影响因子：
3.2
通讯作者：
Heatley, Frank
中科院分区：
文献类型：
--
作者：
Idris, Salah A.;Mkhatresh, Omar A.;Heatley, Frank
聚乙烯亚胺（PEI）的H-1 NMR谱已被指定使用二维NMR相关与先前建立的C-13谱的归属。利用质量损失测量、NMR和傅里叶变换红外光谱研究了PEI的氧化热降解和UV降解。降解产物的光谱分析表明，降解过程可以很容易地监测，特别是通过C-13 NMR。主要产物是甲酰胺和其他酰胺基团，其可以根据氢过氧化物的断链和脱水反应来理解。(C)2006年化学工业学会。
The H-1 NMR spectrum of poly(ethylenimine) (PEI) has been assigned using two-dimensional NMR correlation with the previously established assignment of the C-13 spectrum. The oxidative thermal and UV degradation of PEI has been studied using mass loss measurements, and NMR and Fourier transform infrared spectroscopy. Analysis of the spectra of the degradation products shows that the degradation process may readily be monitored, particularly by C-13 NMR. The major products are formamide and other amide groups which may be understood in terms of chain scission and dehydration reactions of hydroperoxides. (C) 2006 Society of Chemical Industry.