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用ＮＭＲ谱研究了甲基丙烯酸甲酯（ＭＭＡ）－Ｎ－苯基马来酰亚胺（ＰＭＩ）、苯乙烯（Ｓｔ）－ＰＭＩ共聚物的序列结构．结果表明，ＭＭＡ－ＰＭＩ共聚物单元属无规序列分布，Ｓｔ－ＰＭＩ共聚物单元属交替序列分布．由１ＨＮＭＲ结果可得ＭＭＡ－ＰＭＩ共聚物空间立构部分信息，由１３ＣＮＭＲ三单元组实验结果算得的序列长度与末端基理论计算结果一致，且ＭＭＡ－ＰＭＩ共聚物链属一级Ｍａｒｋｏｖ链．由Ｓｔ－ＰＭＩ共聚物序列长度与末端基理论计算结果的偏差提出更为合理的增长基元反应
The sequence structure of methyl methacrylate (MMA) -N-phenylmaleimide (PMI) and styrene (St) -PMI copolymer was investigated by NMR spectroscopy. The results show that the MMA-PMI copolymer units are random sequence distribution, St-PMI copolymer unit is an alternating sequence distribution. From the 1H NMR results, the information of the stereospecific structure of the MMA-PMI copolymer was obtained. The length of the sequence calculated by the 13CNMR triad experiment was consistent with that of the terminal group theory, and the MMA-PMI copolymer belonged to the first-order Markov chain. The deviation of St-PMI copolymer length from the calculated end-group theory suggests a more reasonable growth motif