碩士生張瀅瀅等關(guān)于長(zhǎng)烷基鏈環(huán)氧單體與CO2共聚及與“極性”環(huán)氧單體三元共聚的研究發(fā)表于JPSA上，并選為內(nèi)封面
The alternating copolymerization of CO2 with the terminated epoxides anchoring long alkyl groups is rarely reported because of their low reactivity and polycarbonate selectivity. This work describes a well-controlled solvent-free copolymerization of CO2 with 1,2-epoxydodecane (EDD) with a long electron-donating alkyl group via the catalysis of Zn-Co(III) double metal cyanide complex catalyst. The productivity of the catalyst was up to 2406 g polymer/g Zn, that is, EDD conversion was 99.2%. The alternating degree of CO2-EDD copolymers were more than 99% and had high number-average molecular weights (Mns) of >100 kg mol21, while only 1.0 wt% 4-decyl-1,3-dioxolan-2-one (DC) were detected. Moreover, by introducing styrene oxide (SO) with electron-withdrawing phenyl group into EDD-CO2 copolymerization system, a new random terpolymer with either electron-withdrawing or electrondonating
side groups was produced with single glass transition temperatures (Tgs) in a wide range from 3 to 56 C, which might be potentially used as biodegradable elastomers or plastics.
JOURNAL OF POLYMER SCIENCE, PART A: POLYMER CHEMISTRY 2015, 53, 737–744
DOI: 10.1002/pola.27497