环氧氯丙烷与离子液体的交联过程研究  

Research on crosslinking of epichlorohydrin and ionic liquids

作　　者：涂卓恒 史名珍 张效敏 吴有庭[1] 胡兴邦[1] TU Zhuoheng;SHI Mingzhen;ZHANG Xiaomin;WU Youting;HU Xingbang(School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210023,Jiangsu,China)

机构地区：[1]南京大学化学化工学院,江苏南京210023

出　　处：《化工学报》2020年第11期4971-4980,共10页CIESC Journal

基　　金：国家自然科学基金项目(21376115,21576129);江苏省自然科学基金项目(BK20190310)。

摘　　要：鉴于目前离子液体交联反应所用交联剂存在的高成本、难制备的问题,提出以廉价易得的环氧氯丙烷交联二胺质子型离子液体制备离子液体凝胶的设想。基于此,通过监测反应体系动力学信息证明了反应的可能性,同时研究了与酸中和顺序、反应温度、交联比例对环氧基团和氯基团转化率的影响。探究了环氧氯丙烷-二胺交联体系的凝胶转变性能以及可能的反应机理。并且初步测试了交联产物的CO2分离性能。Ionic liquid supported liquid membranes have shown high CO2 selective separation performance,but their low pressure resistance greatly limits their industrial applications.From the viewpoint of high cost and complex synthesis of crosslinkers used for crosslinking ILs,preparing IL-based gels by crosslinking diamino protic ionic liquids(PILs)with epichlorohydrin(ECH)was proposed in this work.The feasibility of this conception was confirmed via monitoring dynamical information of reaction system.The effects of protonation,reaction temperature and ECH-to-PIL molar ratio on the conversion of epoxy and chloride groups were systematically investigated.The gel transition property of these crosslinked PILs and the possible crosslinking mechanism were studied.Moreover,CO2 permeation performance in crosslinked ILs was preliminarily tested.

关 键 词：离子液体 交联 动力学 膜 碳捕集 

分 类 号：TQ028.8[化学工程]