writer：Ying-Ying Zhang, Xing-Hong Zhang,* Ren-Jian Wei, Bin-Yang Du, Zhi-Qiang Fan and Guo-Rong Qi
keywords：Carbon dioxide，Polycarbonate，Double metal cyanide complex, Fatty acid
source：期刊
specific source：RSC Adv., 2014, 4, 36183–36188
Issue time：2014年

The selective copolymerization of CO2 and an epoxide to form fully alternating polycarbonates is a great challenge via catalysis with the zinc–cobalt(III) double metal cyanide complex [Zn–Co(III) DMCC]. We describe the first perfectly alternating copolymerization of CO2 with a bio-based epoxide. The resultant polycarbonate had a low Tgs of
38 to
44 C and two end hydroxyl groups, which were then used to initiate ring-opening polymerization of L-lactide via metal-free catalysis, affording a biodegradable triblock copolymer. This study provides a new platform copolymer for making various advanced polymers with biodegradable properties.