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首页> 外文期刊>Journal of Applied Polymer Science >Studies on the microstructure of vinyl/N-phenylmaleimide copolymers by NMR and their applications
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Studies on the microstructure of vinyl/N-phenylmaleimide copolymers by NMR and their applications

机译：NMR研究乙烯基/ N-苯基马来酰亚胺共聚物的微观结构及其应用

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摘要

The micro- and stereostructures and sequence distribution of methyl methacrylate (MMA)/N-phenylmaleimide (PMI) and styrene (St)-PMI copolymers were studied in detail with NMR spectroscopy. The MMA-PMI copolymer was in a random sequence distribution and the St-PMI copolymer was alternating in structure. Some micro- and stereoinformation of the MMA-PMI copolymers could be obtained from H-1-NMR spectra. The average number sequence length obtained from the copolymer triad try C-13-NMR spectra was in agreement with that calculated from the reactivity ratios measured by an elemental analyzer. From the triad fraction of the copolymer measured by C-13-NMR, the copolymer chain of MMA-PMI was proved to be a one-order Markov chain. More suitable propagation reactions were proposed from the deviation of sequence distribution of the St-PMI copolymer. (C) 2000 John Wiley & Sons, Inc. [References: 12]
机译：用NMR光谱法详细研究了甲基丙烯酸甲酯（MMA）/ N-苯基马来酰亚胺（PMI）和苯乙烯（St）-PMI共聚物的微观结构和序列分布。 MMA-PMI共聚物呈无规序列分布，St-PMI共聚物呈交替结构。可以从H-1-NMR光谱中获得MMA-PMI共聚物的一些微观和立体信息。由共聚物三元组C-13-NMR谱获得的平均数序列长度与由元素分析仪测得的反应率所计算的平均数序列长度一致。从通过C-13-NMR测得的共聚物的三单元组分数，证明MMA-PMI的共聚物链为一阶马尔可夫链。从St-PMI共聚物的序列分布的偏差提出了更合适的繁殖反应。 （C）2000 John Wiley＆Sons，Inc. [参考：12]

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