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Chemical Research in Chinese Universities ›› 2002, Vol. 18 ›› Issue (4): 462-465.

• Articles • Previous Articles     Next Articles

Polymerization of Norbornene via an Iron-Based Complex/MAO Catalytic System

MI Xia1,2, MA Zhi1,2, YAN Wei-dong3, LIU Yuan-xia1,2, WANG Hang1,2, KE Yu-cai1, HU You-liang1   

  1. 1. State Key Lab of Engineering Plastics, Center for Molecular Science, Beijing Laboratory of Catalysis, CNPC Key Laboratory of Catalysis, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, P. R. China;
    2. Graduate School of Chinese Academy of Sciences, Beijing 100080;
    3. Institute of Polymer Science and Engineering, Hebei University of Technology, Tianjin 300130, P. R. China
  • Received:2001-11-07 Online:2002-12-24 Published:2011-08-04
  • Supported by:

    Supported by the Special Funds for Major State Basic Research Projects(No.G1999064800), the National Natural Science Foundation of China(No.29734141), and SKLEP (0062), SINOPEC and CNPC.

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Abstract: Polynorbornenes were synthesized in the presence of an iron based catalyst, 2,6-bis[1-(2,6-diisopropyl-phenylimino)ethyl]pyridine iron(Ⅱ) dichloride. The FTIR, 1H NMR and 13C NMR analysis results revealed that the structure of the obtained polynorbornenes consisted of vinyl addition polymer substructures without any ring-opening structures. The polymers were amorphous with a short-range order, displayed in the WAXD(wide angle X-ray diffraction) diagrams. The glass transition temperatures ranged from 200 to 400 ℃. The effects of the polymerization reaction conditions, such as Al/Fe molar ratio and toluene/CH2Cl2 volume ratio, on the activity, intrinsic viscosity [η] and Tg were also studied.

Key words: Polynorbornene, Iron-based complex, Vinyl addition polymer, Short-range order, Norbornene polymerization