Li Sibo, Tian Mengying, Wang Jirong, Du Feipeng, Li Liang, Xue Zhigang
School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430074, China.
Key Laboratory for Material Chemistry of Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Polymers (Basel). 2020 Apr 1;12(4):763. doi: 10.3390/polym12040763.
The Br-terminated poly (ethylene oxide) (PEO-Br) is used as a green and efficient macroinitiator in bulk Fe-catalyzed atom transfer radical polymerization (ATRP) without the addition of any organic ligands. The polymerization rate is able to be mediated by PEO-Br with various molecular weights, and the decrease in redox potential of FeBr in cyclic voltammetry (CV) curves indicates that an increased coordination effect is deteriorated with the depressing reaction activity in the longer ethylene oxide (EO) chain in PEO-Br. In combination with the study of different catalysts and catalytic contents, the methyl metharylate (MMA) or poly (ethylene glycol) monomethacrylate (PEGMA) was successfully polymerized with PEO-Br as an initiator. This copolymer obtained from PEGMA polymerization can be further employed as a polymer matrix to form the polymer electrolyte (PE). The higher ionic conductivity of PE was obtained by using a high molecular weight of copolymer.
溴端基聚环氧乙烷（PEO-Br）在不添加任何有机配体的情况下，被用作本体铁催化原子转移自由基聚合（ATRP）中绿色高效的大分子引发剂。聚合速率能够由不同分子量的PEO-Br调节，循环伏安法（CV）曲线中FeBr氧化还原电位的降低表明，随着PEO-Br中环氧乙烷（EO）链变长，配位效应增强，但反应活性降低。结合对不同催化剂和催化含量的研究，以PEO-Br为引发剂成功实现了甲基丙烯酸甲酯（MMA）或聚乙二醇单甲基丙烯酸酯（PEGMA）的聚合。由PEGMA聚合得到的这种共聚物可进一步用作聚合物基体来形成聚合物电解质（PE）。使用高分子量的共聚物可获得更高离子电导率的PE。
