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首页> 外文期刊>Journal of Applied Polymer Science >H-1-NMR SPECTROSCOPIC INVESTIGATION OF POLYAMIDE FIBERS CRAFTED WITH VINYL MONOMERS
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H-1-NMR SPECTROSCOPIC INVESTIGATION OF POLYAMIDE FIBERS CRAFTED WITH VINYL MONOMERS

机译：用乙烯基单体制成的聚酰胺纤维的H-1-NMR光谱研究

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Nuclear magnetic resonance spectroscopy was used to investigate the position of active centers in polyamide fibers subjected to graft copolymerization with poly(acrylic acid), poly(itaconic acid), and poly(2-vinylpyridine) initiated by thermal oxidation in air. As a result, structural changes in polyamide fibers brought about by oxidation and subsequent grafting of the above mentioned polymers were observed. It was estimated that the generation of active centers that initiate the copolymerization take place at the nitrogen atoms of the amide groups in the polyamide chain. This was confirmed by the broadening of the absorption band for the methylene group adjacent to the nitrogen as well as by the absence of a new absorption band for the methine groups, assuming that the generation of active centers and grafting would take place at the carbon atom of the methylene group in position a to the amide group. (C) 1996 John Wiley & Sons, Inc. [References: 44]
机译：核磁共振波谱用于研究在空气中热氧化引发的聚（丙烯酸），聚（衣康酸）和聚（2-乙烯基吡啶）接枝共聚后的聚酰胺纤维中活性中心的位置。结果，观察到聚酰胺纤维的结构变化是由上述聚合物的氧化和随后的接枝引起的。据估计，引发共聚的活性中心的产生发生在聚酰胺链中酰胺基团的氮原子上。假定活性中心的产生和接枝将在碳原子上发生，这是通过扩大与氮相邻的亚甲基的吸收带以及不存在对于次甲基的新吸收带而证实的。在酰胺基的α位的亚甲基。 （C）1996 John Wiley＆Sons，Inc. [参考：44]

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