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《工程塑料应用》 2021年第06期
DOI:10.3969/j.issn.1001-3539.2021.06.003
两种离子液体嵌段共聚物的合成及其离子传导性表征
柳泽宇,程曼芳,王文清,杨岩,王杰,李宗育,雷良才,李海英
辽宁石油化工大学石油化工学院,辽宁抚顺 113001 
Synthesis of Two Ionic Liquid Block Copolymers and Characterization of Ionic Conductivity
Liu Zeyu, Cheng Manfang, Wang Wenqing, Yang Yan, Wang Jie, Li Zongyu, Lei Liangcai, Li Haiying
School of Petrochemlcal Englneering, Liaoning Petrochemical University, Fushun 113001, China 
摘要:采用可逆加成-断裂链转移(RAFT)聚合技术合成了分子量分布窄(1.60)且带有—PhCH2Cl侧基线型三嵌段共聚物——聚甲基丙烯酸甲酯-b-聚对乙烯基苄基氯-b-聚苯乙烯[P(MMA-b-VBC-b-St)],然后经1-甲基咪唑(NMIm)季铵化及锂离子盐(LiTFSI)进行阴离子交换,分别制得两种离子液体嵌段共聚物P(MMA-b-VBMImCl-b-St)和P(MMA-b-VBMImTFSI-b-St)。利用傅里叶变换红外光谱仪、核磁共振氢谱仪、凝胶色谱仪对其结构进行了确认。通过交流阻抗技术考察了两种离子液体嵌段聚合物的离子导电性能,它们的离子电导率分别为5.42×10-4 S/cm和1.54×10-3 S/cm。结果表明,由于引入了电荷离域性更强的TFSI-反离子,P(BMA-b-VBMImTFSI-b-St)的电导率显著高于P(BMA-b-VBMImCl-b-St)。 
Abstract:A linear triblock copolymer poly(methyl methacrylate)-b-poly(p-vinyl benzyl chloride)-b-polystyrene [P(MMA-b-VBC-b-St) whose molecular weight distribution index is 1.60 and having —PhCH2Cl side groups was synthesized by reversible addition-fragmentation chain transfer polymerization technique. Two ionic liquid copolymers, P(MMA-b-VBMImCl-b-St) and P(MMA-b-VBMImTFSI-b-St), were synthesized from the linear triblock copolymer by the quaternary ammonium reaction of the triblock with 1-methylimidazole (NMIm) and then the anion-exchange with lithium bis(trifluoromethanesulphonyl) imide (LiTFSI).Their structures were confirmed by 1H-NMR, FTIR and GPC. The ionic conducting properties of P(MMA-b-VBMImCl-b-St) and P(MMA-b-VBMImTFSI-b-St) were investigated by AC impedance technology and their conducting rate were 5.42×10-4 S/cm and 1.54×10-3 S/cm, respectively. The results show that the conductivity of P(BMA-b-VBMImTFSI-b-St) is significantly higher than that of P(BMA-b-VBMImCl-b-St) due to the introduction of TFSI- ionics with stronger ionic charge delocalization. 
关键词:离子液体嵌段共聚物;离子电导率;可逆加成-断裂链转移聚合;季铵化;阴离子交换 
Keywords:ionic liquid block copolymer; ionic conducting rate; reversible addition-fragmentation chain transfer polymerization; quaternary ammonium reaction; anion-exchange 
基金:国家自然科学基金项目(21544008) 
本文引用格式:
柳泽宇,程曼芳,王文清,等.两种离子液体嵌段共聚物的合成及其离子传导性表征[J].工程塑料应用,2021,49(6):16-20.
Liu Zeyu,Cheng Manfang,Wang Wenqing,et al. Synthesis of two ionic liquid block copolymers and characterization of ionic conductivity[J]. Engineering Plastics Application,2021,49(6):16-20. 

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