高等学校化学学报

高等学校化学学报 ›› 2006, Vol. 27 ›› Issue (5): 961.doi:

• 研究论文 • 上一篇    下一篇

光谱法分析乙丙共聚物的序列结构及链节比

董慧茹, 陶红, 王楠楠, 毕鹏禹   

  1. 北京化工大学理学院, 北京 100029
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-05-10 发布日期:2006-05-10
  • 通讯作者: 董慧茹

Analysis of Sequential Structure and Monomer Unit Ratio of Ethylene-propylene Copolymer by Spectroanalysis Method

DONG Hui-Ru*, TAO Hong, WANG Nan-Nan, BI Peng-Yu   

  1. College of Science, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2006-05-10 Published:2006-05-10
  • Contact: DONG Hui-Ru

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被引次数

12

摘要：

用FTIR, 1 H NMR和 13 C NMR分析乙丙共聚物的序列结构与链节比. 通过对乙丙共聚物 1 H NMR, 13 C NMR和 13 C-1 H二维核磁共振谱的综合分析, 提出了与前人不同的归属, 并提出了不同位置碳原子积分面积相关性分析方法, 该方法避免了烦琐的理论计算, 可简便地得到乙丙共聚物的主要序列结构. 通过比较 1 H NMR和 13 C NMR计算乙丙共聚物中乙烯、 丙烯链节比, 表明可以用 1 H NMR代替 13 C NMR完成对乙丙共聚物中乙烯、 丙烯链节比的定量计算.

关键词: 核磁共振谱; 红外光谱; 乙丙共聚物; 序列结构; 链节比

Abstract:

The sequential structures and monomer unit ratio of ethylene-propylene copolymer(EPC)were analyzed by FTIR, 1 H NMR and 13 C NMR. The spectra of 1 H NMR, 13 C NMR and two-dimensional NMR of EPC were also analyzed in detail, the differential explanations of the NMR spectra for EPC with predecessors, and an analytical method of the relativity of the integrated areas of differential carbon atoms in the inverse gated decoupling 13 C NMR spectrum were proposed in this paper. The proposed method can be used to determine the main sequential structures in EPC simply. The theoretical calculated results of the main sequence distribution for three EPR samples proved that the proposed method is feasible.Compared 1 H NMR with 13 C NMR, it is accepted that 1 H NMR method can be used to calculate the monomer unit ratio of ethylene and propylene in EPC.

Key words: NMR spectrum; FTIR spectrum; Ethylene-propylene copolymer; Sequential structure; Monomer unit ratio

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