聚离子液体-液晶高分子型嵌段共聚物的自组装及离子传导性质的研究

One of the objectives of this project is to synthesize block copolymers (BCPs) containing a polymeric ionic liquid block and a liquid crystalline block. The self-assembling behaviors of the BCPs will be investigated by structural analysis, thermal analysis, microscopic techniques, and other modern analytical methods to reveal the competition and/or synergy among liquid crystalline interaction, ionic interaction, and microphase separation as well as their influences on the phase behaviors of the BCPs. The ionic conductivities of various solid polymer electrolyte samples made from these BCPs will be measured. The ionic conductivities will then be correlated with the self-assembling structures, their orientation, and their large-scale ordering. Such relationships will be useful for obtaining the ways to control and optimize the ionic conductivity of the BCP samples, leading to high-performance solid polymer electrolyte membranes. This project will lead to research works with significant impact in the international scientific community as well as creative research achievements with our own rights of intellectual property.

本项目旨在合成一类同时含有聚离子液体和偶氮型侧链液晶高分子的嵌段共聚物，利用结构分析、热分析、显微技术等多种现代分析测试技术系统研究其本体和薄膜的自组装行为，揭示液晶相互作用、静电相互作用、微相分离之间的竞争/协同规律及对嵌段共聚物相行为的影响。同时，测定由上述嵌段共聚物制备的固态聚合物电解质样品的离子传导率，揭示此类体系中离子传导的机制，同时将离子传导性能与嵌段共聚物的自组装结构及其取向和有序度相关联，总结调控和优化样品离子传导性能的规律，从而制备高性能的固态聚合物电解质膜。做出一批在国际上具有重要影响的工作，并获得原创性的具有自主知识产权的研究成果。

本项目旨在合成一类同时含有聚离子液体和偶氮型侧链液晶高分子的嵌段共聚物，揭示液晶相互作用、静电相互作用、微相分离之间的竞争/协同规律及对嵌段共聚物相行为的影响，制备高性能的固态聚合物电解质膜。本项目取得的主要成果有：（1）获得了具有较高离子电导率的基于离子-液晶嵌段共聚物的固态电解质，揭示了这类体系的自组装结构和离子电导率受聚合物组成、离子化程度、温度等因素的影响规律；（2）获得了高性能且具有自修复性能的双网络离子凝胶电解质，揭示了其性能随组成、化学交联度等的变化规律；（3）获得了耐高温、高电导率的固态聚合物电解质，并揭示了聚合物组成、锂盐含量等对其性能的影响规律。