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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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Abstract:

The 1H NMR spectrum of poly(ethylenimine) (PEI) has been assigned using two‐dimensional NMR correlation with the previously established assignment of the 13C 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 13C NMR. The major products are formamide and other amide groups which may be understood in terms of chain scission and dehydration reactions of hydroperoxides. Copyright © 2006 Society of Chemical Industry

Keywords: NMR; oxidative degradation; poly(ethylenimine); thermal degradation

Document Type: Research Article

DOI: https://doi.org/10.1002/pi.2049

Publication date: 2006-09-01

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