Selective production of poly(carbonate-co-ether) over cyclic carbonate for epichlorohydrin and CO2 copolymerization via heterogeneous catalysis of Zn-Co (III) double metal cyanide complex
writer：Ren-Jian Wei, Xing-Hong Zhang*, Bin-Yang Du, Zhi-Qiang Fan, Guo-Rong Qi
keywords：Epichlorohydrin,Zn-Co(III) DMCC,Polycarbonates
source：期刊
specific source：Polymer 54 (2013) 6357 - 6362
Issue time：2013年
Epichlorohydrin (ECH), as a cheap raw chemical material, is an ideal monomer for copolymerization with CO2 to produce biodegradable polycarbonates. This work describes the selective ECH-CO2 copolymerization via heterogeneous catalysis of nanolamellar zinc-cobalt double metal cyanide complex (Zn-Co (III) DMCC), affording a poly(carbonate-co-ether) with carbonate content up to 70.7%. Remarkably, the cyclic carbonate contents in the product are 5.0%-11.3% at 25-60 ℃, better than those from homogeneous catalysis. Moreover, the copolymer with 70.7% carbonate content presents high thermal decomposition temperature of 250 ℃ and relatively high glass-transition temperature (Tg) of 31.2 ℃.
