Citation: Ying-Jie Jiang, Wei-Min Ren, Ye Liu, Xiao-Bing Lu. Synthesis of Polycarbonate Block Terpolymers Using Robust Cobalt Catalyst Systems[J]. Chinese Journal of Polymer Science, ;2019, 37(12): 1200-1204. doi: 10.1007/s10118-019-2270-8 shu

Synthesis of Polycarbonate Block Terpolymers Using Robust Cobalt Catalyst Systems

State key laboratory of fine chemicals, Dalian University of Technology, Dalian 116024, China

Corresponding author: Wei-Min Ren, wmren@dlut.edu.cn Xiao-Bing Lu, xblu@dlut.edu.cn
Received Date: 18 March 2019
Accepted Date: 4 April 2019
Available Online: 3 June 2019

This contribution reports an efficient approach for preparing polycarbonate block terpolymers by immortal stepwise copolymerization of CO₂ with different epoxides in the presence of enol chain transfer, mediated by robust cobalt catalyst systems consisting of the fluorine substituted salenCo(III)NO₃ or biphenol-linker bimetallic Co(III) complex in conjunction with an ionic cocatalyst, PPNX (PPN = bis(triphenylphosphine)iminium, X = NO₃^– or 2,4-dinitrophenoxide). Various polycarbonate block terpolymers were obtained in perfectly unimodal distribution of their molecular weights with narrow polydispersity. They all possessed only one broad glass transition temperature, which could be adjusted by altering the length of different polycarbonate segments.
- Carbon dioxide (CO₂),
- Epoxides,
- Polycarbonates,
- Copolymerization,
- Block terpolymer
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