Jiadong Min, Qinhai Zhou, Neirong Zhang, Jingjiang Liu, Xianhong Wang*,
Xiaojiang Zhao and Fosong Wang
Polymer Material Engineering Lab, Changchun Institute of Applied Chemistry, Chinese Academy of
Sicences, Changchun 130022, China. Email: xhwang@ciac.jl.cn

　Rare earth metal ternary catalyst was used to syntheize epoxides and carbon dioxide copolymer.
Rare earth compound is demonstrated to be crucial in raising the catalytic activity and improving the
micro-structure of the aliphatic polycarbonates. The Tg of the aliphatic polycarbonate is adjustable from
-150C to 1200C by controlling the relative molar ratio of the comonomers.

Acknowledgement.
　This work was supported by CAS (KJCX2-206A) and NSFC of China (50003009).

References
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[3] C. S. Tan, T. J. Hsu, Macromolecules, 1997, 30, 3147.
[4] B.Y. Liu, X.J. Zhao, X.H. Wang, F.S. Wang, J. Polym. Sci., Part A: Polym. Chem., 2001, 39, 2751.

　论文来源：International Symposium on Polymer Chemistry,June,2004