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测定了两个氢化丁苯共聚物样品的~1H、~(13)C NMR谱。通过处理文献中的~(13)C NMR谱数据得到了-C_2H_5和-C_6H_5的SCS参数。利用乙烯-α-烯烃共聚物的SCS方法结合DEPTNMR实验技术重新归属了该共聚物的~(13)C NMR谱。明确指出,氢化丁苯共聚物分子链中主链任何一个乙烯单元的两个CH_2在序列分布上分属于二元组和三元组。CH则用三元组来表征。最后,对HBS共聚物的序列分布进行了计算。
The ~ 1H, ~ (13) C NMR spectra of two samples of hydrogenated styrene-butadiene copolymer were measured. The SCS parameters of -C_2H_5 and -C_6H_5 were obtained by processing the ~ (13) C NMR spectra in the literature. The ~ (13) C NMR spectrum of this copolymer has been restated using the SCS method of ethylene -? - olefin copolymer in combination with the DEPTNMR experimental technique. It is clearly pointed out that the two CH 2 of any ethylene unit of the main chain in the hydrogenated styrene-butadiene copolymer chain belong to the binary group and the triple-group on the sequence distribution. CH is used to characterize the triples. Finally, the sequence distribution of HBS copolymer was calculated.