基于双核咪唑盐阴离子交换膜的制备与表征  

Synthesis and Characterization of Anion Exchange Membrane Based on Binuclear Imidazolium Salt

作　　者：袁文森 李杏杏[1] 祝缓缓 储富强[1] 袁宁一[1,2] 丁建宁 林本才[1,2] Wensen Yuan;Xingxing Li;Huanhuan Zhu;Fuqiang Chu;Ningyi Yuan;Jianning Ding;Bencai Lin(School of Materials Science and Engineering,Changzhou University,Changzhou 213164,China;Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineerings Changzhou 213164 , China)

机构地区：[1]常州大学材料学院与工程学院,江苏常州213164 [2]江苏省光伏科学与工程协同创新中心,江苏常州213164

出　　处：《高分子材料科学与工程》2019年第1期35-40,共6页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(21476031);江苏省自然科学基金资助项目(BK20151187);江苏省高等学校自然科学研究重大项目(18KJA430004;17KJA430002)

摘　　要：采用两步法合成了双核溴化1-乙烯基-3-(6-(1-丁基咪唑))己基咪唑盐[VBIm HIm][Br]2,并通过1H-NMR对[VBIm HIm][Br]2的化学结构进行了表征;然后将[VBIm HIm][Br]2与苯乙烯、丙烯腈混合均匀后,通过紫外光引发聚合,得到碱性阴离子交换膜。通过傅里叶变换红外光谱对阴离子交换膜的结构进行了表征,并系统对膜的吸水率、溶胀度、热稳定性、力学性能及电导率等进行了研究。研究结果表明,该类阴离子交换膜降解温度达到300℃,[VBIm HIm][Br]2含量为10%的阴离子交换膜25℃时的吸水率为96%,溶胀度只有44%,拉伸强度为38. 32 MPa,最大断裂伸长率可达26. 37%;在80℃时,其离子的电导率可达22 m S/cm,该类阴离子交换膜有望应用于碱性阴离子交换膜燃料电池领域。Binuclear imidazolium salt,1-vinyl-3-(6-( 1-butylated imidazole)) hexyl imidazole ([VBImHIm][Br]2),was synthesized and the chemical structure of [VBImHIm][Br]2 was characterized by 1H-NMR. Alkaline anion-exchange membranes (AEMs) based on [VBImHIm][Br]2 were prepared by irradiation with UV light. The structure of the membranes was characterized by FT-IR, and the water uptake,swelling degree, thermal stability,mechanical properties and conductivity of the membranes were systematically studied. These AEMs are thermally stable up to 300℃, the AEM with 10wt%[VBImHIm][Br]2 exhibits a high water uptake of 96% and swelling degree of 44% at 25℃. The tensile strength and the elongation at breaks of [VBIm-HIm][Br]2-10 are 38. 32 MPa and 26. 37%, respectively and its ionic conductivity is up to 22 mS/cm at 80℃. All of these results indicate good potential applications in alkaline anion exchange membrane fuel cells.

关 键 词：咪唑盐 阴离子交换膜 燃料电池 电导率 

分 类 号：TB383[一般工业技术—材料科学与工程]