波谱学杂志 ›› 1991, Vol. 8 ›› Issue (3): 275-282.

• 研究论文 • 上一篇    下一篇

氢化丁苯共聚物结构的核磁共振波谱表征Ⅱ.微观结构的定量计算

陈理1, 彭勤纪1, 王用威1, 陈伟洁1, 佘丰年1, 侯明山2   

  1. 1. 大连理工大学化工学院;
    2. 北京燕山石化公司研究院
  • 收稿日期:1990-08-11 修回日期:1990-12-15 出版日期:1991-09-05 发布日期:2018-01-20

NMR SPECTRUM CHARACTERIZATION OF HYDROGENATED STYRENE-BUTADIENE COPOLYMERS Ⅱ-The Quantitative Calculation of Structure Units

Chen Li1, Peng Qinji1, Wang Yongwei1, CHen Weijie1, Yu Fongnian1, Hou Mingshan2   

  1. 1. School of Chemical Engineering, Dalian University of Technology;
    2. Research Institute, Yanshan Petrochemical Corporation
  • Received:1990-08-11 Revised:1990-12-15 Online:1991-09-05 Published:2018-01-20

摘要: 在氢化丁苯共聚物13C-NMR谱脂肪碳部分谱带归属的基础上,根据各谱带的主要来源,推导出六个二单元浓度的计算公式。计算出二单元、一单元的相对含量,各结构单元的数均序列长度、嵌段含量和其它结构参数。加氢前后的1H-和13C-NMR谱的组成计算结果基本一致。初步探讨了作为粘度指数改进剂的氢化丁苯共聚物微观结构与性能的关系,为合成提供了依据。

关键词: 氢化丁苯共聚物, 核磁共振波谱, 序列分布, 结构单元浓度

Abstract: According to the contribution of main structural units to the peaks, six equations for diad concentrations in terms of peak intensity have been derived based on the 13C-NMR spectrum assignments of hydrogenated styrene-butadiene copolymers (HPBS). Many structural data, including the concentrations of diads, monomer units and their blocks, the number-average sequence lengths of each monomer unit and other structural parameters, were calculated. Basically consistent results from 1H-and 13C-NMR spectra were obtained for the styrene-butadiene copolymers before and after hydrogenation. Furthermore, the correlation between the microstructure of HPBS and its behavior serving as viscosity index improver has been preliminarily investigated. The results would provide a basis for preparation of HPBS with better performance.

Key words: Hydrogenated styrene-butadiene copolymer, NMR spectrum, Sequence distribution, Concentration of structural units