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Copolymerization of epoxides and carbon dioxide by using double metal cyanide complex (DMC) with high crystallinity

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Abstract

Zn3 [Co(CN)6]2 based double metal cyanide complex(Co-Zn DMC) is synthesized and characterized by element analysis, FT-IR, TG-FTIR, XRD and TEM. The composition of Co-Zn DMC summarized by elemental analysis has been confirmed by TG-FTIR. The catalyst has high crystallinity according to strong crystalline peaks shown in XRD and diffraction spot observed by TEM. Copolymerization of epoxides and carbon dioxide are successfully catalyzed by Co-Zn DMC. The efficiency of catalysts is as high as 7488 g polymer/g catalyst for CO2/propylene oxide (PO), 1100 g polymer/g catalyst for CO2/ethylene oxide (EO), which are higher than that reported ever before. The effects of various reaction conditions such as amount of the catalyst, reaction time and temperature on the copolymerization are investigated. The results show that insertion of CO2 into chains is significantly affected by the catalyst quantity and ambient temperature. The weight percentage of byproduct cyclic carbonate can be easily controlled to be less than 5% while the molar fraction of CO2 in backbone (fco2) is more than 30%.

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Acknowledgements

This project was supported by the Natural Science Foundation of Guangdong province, China (9151065004000005).

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Authors and Affiliations

  1. Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou, 510650, Peoples Republic of China

    Tongchang Zhou, Zhiqiang Zou, Jianqun Gan, Liban Chen & Min Zhang

  2. Graduate School of the Chinese Academy of Sciences, Beijing, 100039, Peoples Republic of China

    Tongchang Zhou & Zhiqiang Zou

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  1. Tongchang Zhou
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  2. Zhiqiang Zou
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  3. Jianqun Gan
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  4. Liban Chen
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  5. Min Zhang
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Correspondence to Min Zhang.

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Zhou, T., Zou, Z., Gan, J. et al. Copolymerization of epoxides and carbon dioxide by using double metal cyanide complex (DMC) with high crystallinity. J Polym Res 18, 2071–2076 (2011). https://doi.org/10.1007/s10965-011-9616-4

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  • DOI: https://doi.org/10.1007/s10965-011-9616-4

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