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Citation: ZHANG Yaming, GAO Fengxiang, ZHOU Qinghai, QIN Yusheng, WANG Xianhong, WANG Fosong. Terpolymerization of Carbon Dioxide-Propylene Oxide-Cyclohexene Oxide by Cyclohexene Oxide Continuous Feeding[J]. Chinese Journal of Applied Chemistry, ;2014, 31(12): 1384-1389. doi: 10.3724/SP.J.1095.2014.40243 shu

Terpolymerization of Carbon Dioxide-Propylene Oxide-Cyclohexene Oxide by Cyclohexene Oxide Continuous Feeding

1.
a Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
2.
b University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author: WANG Xianhong,
Received Date: 14 July 2014
Available Online: 10 September 2014
Fund Project: 国家自然科学基金(51321062)资助项目 (51321062)

The copolymerization reaction rate of cyclohexene oxide(CHO) and carbon dioxide is faster than that of propylene oxide(PO) and carbon dioxide,which leads to the difficulty in controlling the composition of the CHO-PO-CO₂ terpolymer from one-pot synthesis.In this work,continuous feeding of CHO was used for the terpolymerization of CHO,PO and CO₂ under a ternary rare earth metal coordination catalyst.Its catalytic activity can reach 575 g/(mol Zn h).Terpolymer PPCH100x(x is the molar farction of CHO in total oxides in comonomer feed) from the continuous process has only one glass transition temperature,while the terpolymer from one-pot synthesis has two glass transition temperatures.The glass transition temperature of PPCHx increases from 44.3℃ to 70.1℃ when the feed ratio of CHO increases from 0.19 to 0.59.It is encouraging to note that the composition of the terpolymer from continuous CHO feeding is similar to the feed ratio of comonomers,indicating that continuous feeding of comonomers is effective for controlling the composition of the terpolymer.
- carbon dioxide,
- propylene oxide,
- cyclohexene oxide,
- continuous monomer feeding
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