Aliphatic polycarbonate synthesis by copolymerization of carbon dioxide with epoxides over double metal cyanide catalysts prepared by using ZnX2 (X = F, Cl, Br, I) |
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Authors: | Il Kim Min Ju Yi Kyoung Ju Lee Dae-Won Park Bu Ung Kim Chang-Sik Ha |
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Affiliation: | Division of Chemical Engineering, Pusan National University, Busan 609-735, Republic of Korea |
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Abstract: | As means of the chemical fixation of carbon dioxide and the synthesis polycarbonates, copolymerizations of carbon dioxide with various epoxides, such as cyclohexene oxide, cyclopentene oxide and propylene oxide were investigated in the presence of double metal cyanide (DMC) catalysts. The DMC catalysts were prepared by reacting K3Co(CN)6 with ZnX2 (X = F, Cl, Br, I) together with tertiary butyl alcohol and poly(tetramethylene ether glycol) as complexing reagents and were characterized by various spectroscopic methods. The DMC catalysts showed high activity for epoxides and CO2 copolymerization to yield aliphatic polycarbonates of narrow polydispersity and moderate molecular weight. |
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Keywords: | Carbon dioxide Catalysis Copolymerizations Double metal cyanide Epoxides Polycarbonates Ring-opening |
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