波谱学杂志 ›› 2010, Vol. 27 ›› Issue (1): 32-38.

• 恭祝徐广智先生八十华诞(专辑) • 上一篇    下一篇

线型- 超支化嵌段聚乙烯的 13C NMR研究

  

  1. 1. 浙江大学 化学工程联合国家重点实验室 化学工程与生物工程学系,浙江 杭州 310027; 
    2.湖南文理学院 化学与化工学院,湖南 常德 415000
  • 收稿日期:2009-12-15 出版日期:2010-03-05 发布日期:2010-03-05

13C NMR Study of Linear-Hyperbranched Block Polyethylene

  1. 1.State Key Laboratory of Chemical Engineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China; 2.Department of Chemistry and Chemical Engineering, Hunan University of Arts and Science, Changde 415000, China
  • Received:2009-12-15 Online:2010-03-05 Published:2010-03-05

摘要:

含有结晶链段和无规链段的线型-超支化嵌段聚乙烯(LHBPE)是一类新型的聚合物. 在链转移剂存在的情况下,LHBPE可以通过α-二亚胺溴化镍/乙撑桥二氯茚锆/甲基铝氧烷(MAO)催化的乙烯聚合制得. 本文主要对LHBPE进行13C NMR研究,并对聚合物分子的支链如甲基、乙基、丙基、丁基和戊基等进行归属和定量研究.

关键词: 13C NMR, 线型-超支化嵌段聚乙烯,  结晶链段, 无规链段

Abstract:

The linear-hyperbranched block polyethylene (LHBPE) is a new class  of polymer with useful combinations of amorphous and crystalline segments. This LHBPE could be prepared  via ethylene polymerization catalyzed by α-diimine nickel complex/ansa-ethylene bis-(1-η5-indenyl)-zirconium dichloride/methylaluminoxane (MAO) in the presence of chain transfer agent. Herein, a 13C NMR study of the LHBPEs is presented. Short branches such as methyl, ethyl, propyl, butyl and amyl  were assigned and quantified.

Key words: 13C NMR, linear-hyperbranched block polyethylene, amorphous segment, crystalline segment

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