咪唑鎓离子液体的合成及在苎麻改性中的应用  

Synthesis of imidazolium ionic liquid and its application in ramie modification

作　　者：李强林[1] 黄方千[1] 冯西宁[1] 任建华[1] 郑雄[1] 

机构地区：[1]四川省纺织品生态染整高校重点实验室成都纺织高等专科学校染化系,四川成都611731

出　　处：《印染》2011年第18期14-17,共4页China Dyeing and Finishing

基　　金：四川省教育厅青年基金(No.09ZB004);四川省教育厅科研基金(No.09ZC023)

摘　　要：采用保护和脱保护的方法合成了溴化N-乙基-N苄-基咪唑(BM[imi]Br)离子液体,用傅里叶变换红外光谱和核磁共振谱表征了它的结构,并研究了其溶解性能和导电性能。采用BM[imi]Br的水溶液对苎麻纤维织物改性后再染色,测试了改性苎麻的染色性能。结果表明,离子液体BM[imi]Br为强电解质,极易溶于极性溶剂中。BM[imi]Br在不同溶剂中的电导率顺序为:k(水)>k(乙腈)>k(DMF)>k(无水乙醇)>k(丙酮),其摩尔电导率随离子液体浓度的增大而减小。苎麻经离子液体处理改性后,其吸水率、吸湿率和上染率均有明显提高。Ionic liquid of N-ethyI-N-benzyl-imidazolium bromide （BM[ imi] Br） is synthesized through protection and de-protection methods. Its structure is characterized by FTIR and NMR and its solubility and conductivity performance are investigated. Dyeing of hemp fabric modified in aqueous solution of BM [ imi] Br is studied, and the dyeing properties are tested. The results show that BM[ imi] Br is a strong electrolyte, and is easy to dissolve in polar solvents. The order of the electric conductivity of B M[ imi] Br in different solvents is： k （water） 〉 k （acetonitrile） 〉 k {DMF） 〉 k （ethanol） 〉 k （acetone）, the molar electric conductivity decreases with the increase of ionic liquid concentration. Water absorption, hygroscopic and dye up-take of hemp fabric improve significantly after treated with BM[ imi] Br.

关 键 词：染色 咪唑鎓 离子液体 苎麻织物 

分 类 号：TS195.6[轻工技术与工程—纺织化学与染整工程]