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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2000, Vol. 1 Issue (1): 20-26    DOI: 10.1631/jzus.2000.0020
Science & Engineering     
POLYMERIZATION OF METHYL METHACRYLATE WITH IRON-YTTERBIUM DINUCLEAR METALLOCENE CATALYST
PAN Zhi-da, SUN Jun-quan, YANG Shi-lin
Institute of Chemical Engineering, Yuquan Campus of Zhejiang University, Hangzhou 310027, China
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Abstract  A novel iron-ytterbium dinuclear catalyst,FcB(MeCp)Yb (MeCp) Cl (Fc: ferrocenyl, B: diethylene ether),was synthesized for the polymerization of methyl methacrylate (MMA). Synergistic effects between the ferrocenyl group and the lanthanocene part were investigated regarding their catalytic behaviors. UV, IR, GPC and NMR were used to characterize the structures of the catalyst and polymer. Kinetic study showed that polymerization is first order in monomer concentration and fractional order (0.78) in the catalyst. The bimetallic complex is a good catalyst for the polymerization of MMA, giving high molecular weight PMMA with 78% syndiotacticity.

Key words： heterodinuclear catalyst      synergistic effect      lanthanocene      kinetics      polymerization      MMA     
Received: 31 December 1998     
CLC:  O632.52  
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PAN Zhi-da
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YANG Shi-lin
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PAN Zhi-da, SUN Jun-quan, YANG Shi-lin. POLYMERIZATION OF METHYL METHACRYLATE WITH IRON-YTTERBIUM DINUCLEAR METALLOCENE CATALYST. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2000, 1(1): 20-26.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2000.0020     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2000/V1/I1/20

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