自愈合离子凝胶的制备及传感测试  

Preparation and Sensing Test of Self-Healing Ionic Gel

作　　者：刘婧怡 蒋雅萌 冯伟[1] 郑凤 许新华[1] Jingyi Liu;Yameng Jiang;Wei Feng;Feng Zheng;Xinhua Xu(School of Chemical Science and Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学化学科学与工程学院,上海200092

出　　处：《大学化学》2022年第5期298-304,共7页University Chemistry

摘　　要：制备可自愈合离子凝胶及测试其应变和湿度感应,可用作本科新生的普通化学实验,经拓展内容后也适用于应用化学、高分子化学和材料科学与工程等相关专业本科生的综合实验。实验采用自由基聚合法将1-乙烯基-3-丁基咪唑四氟硼酸盐([VBIm][BF_(4)])制备成交联聚合物凝胶(PIL),1-丁基-3-甲基咪唑四氟硼酸盐([BMIm][BF_(4)],IL)充盈其中作为溶剂和添加剂。该PIL/IL离子凝胶中存在游离态的离子液体,具有良好的导电性,可对应变和湿度变化产生响应;同时,因具有较强离子键相互作用,该离子凝胶具有自愈合能力,可重复使用。Self-healing ionic gel was prepared and its strain and humidity sensing test were performed.It is designed as a laboratory experiment for general chemistry of first-year undergraduates.After content expanding,the experiment can also be used as a comprehensive experiment for the students majored in applied chemistry,polymer chemistry and materials science and engineering.The ionic gel was prepared by free radical polymerization of vinyl-3-butyl imidazolium tetrafluoroborate([VBIm][BF_(4)])to form cross-linked polymer matrix(PIL).Whereas 1-butyl-3-methylimidazolium tetrafluoroborate([BMIm][BF_(4)])(IL)was behaved as solvent and additive to the PIL.Because of the existence of free ionic liquid IL molecules in the gel,the PIL/IL ionic gel had a good electrical conductivity,which caused an excellent response to the strain by force or the humidity in air.The gel was also self-healable due to the strong ionic bonding interaction.

关 键 词：离子凝胶 自愈合 应变传感 湿度传感 

分 类 号：G64[文化科学—高等教育学] O6[文化科学—教育学]