Differential study of the biological degradation of polyamide-imides based on the amino acids
作者： Jinhui Feng , Fuyan He , Zhizhou Yang , Jinshui Yao
DOI: 10.1016/J.POLYMDEGRADSTAB.2016.04.021
关键词: Alanine 、 Imide 、 Condensation polymer 、 Polyamide 、 Monomer 、 Organic chemistry 、 Gel permeation chromatography 、 Glycine 、 Materials science 、 Amino acid
摘要: Abstract The l -alanine, glycine and 4-aminobutyric acid, respectively representing the natural chiral amino acids, achiral acids non-natural were combined into three types of diacid monomers containing imide groups. resulting diaminodiphenyl ether glycine-based homopolymerized polyamide-imide (PAI) via direct polycondensation method, as well four randomly copolymerized PAI’s. biodegradability these polymers has been studied in a systemic manner with soil burial experiments appearance, molecular weights structure before after degradation have characterized scanning electron microscopy, gel permeation chromatography Fourier transform infrared spectroscopy. research outcomes suggested that PAI certain biodegradability. For -alanine fragments, higher fragment content is, faster biodegradation rate becomes. However, for based on acid structural units, slower It can be concluded copolymerization -alaine enhanced instead using or acid.
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