CRCU

Chemical Research in Chinese Universities ›› 1998, Vol. 14 ›› Issue (3): 330-334.

• Articles • Previous Articles     Next Articles

Synthesis and Characterization of Poly(isoprene-b-butyl methacrylate) Block Copolymer in the Presence of Rare Earth Catalyst

ZHANG Yi-feng1, ZHENG Rong-hua1, SHEN Zhi-quan1, YAO Ke-min1, SHEN Lian-fang2, YUAN Han-zheng2, Keim-W.3   

  1. 1. Department of Polymer Science, Engineering, Zhejiang University, Hangzhou 310027;
    2. StateKey Laboratory of Magnetic Resonance and A tomic and Molecular Physics, Wuhan Institute of Physics, Academia Sinica, Wuhan 430071;
    3. Institute of Technical Chemistry, RWTH, Germany
  • Received:1997-09-26 Online:1998-08-24 Published:2011-08-17
  • Supported by:

    Supportedbythe State Education Commission,Zhejiang Provincial Commission of Science&Tech.;Zhejiang University K.P.Chaos High Technology Development Foundation.

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Abstract: Poly(isoprene-b-butyl methacrylate) block copolymer with a high molecular weight was synthesized in the presence of rare earth coordination catalyst [RE(P204)3-Al(i-Bu)3-DBE]. The block copolymer was characterized by means of GPC,IR,DSC,NMR and elemental analysis. The block copolymer prepared has two glass transition temperatures: -75.6 ℃ and 32.2 ℃. The microstructure of the diblock copolymer possessed 96.8% cis-1,4 addition for the isoprene segment and a 70% syndiotacticity for the butyl methacrylate segment.

Key words: Block copolymerization, Isoprene, Butyl methacrylate, Rare earth catalyst