离子液体电毛细特性及微流控环境分析原理

项目名称： 离子液体电毛细特性及微流控环境分析原理

项目编号： No.21277116

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 环境科学、安全科学

项目作者： 李明

作者单位： 扬州大学

项目金额： 80万元

中文摘要： 研究离子液体电毛细特性是解决介电湿润方法水滴蒸发问题的关键技术。疏水性离子液体在水溶液中因部分正负电荷组分溶解不平衡导致其两相界面形成双电层，体现电毛细特性。在此离子液体的正负电荷组分的溶解度起主要作用，但当发生化学萃取后，被萃取物的电荷性质、疏水性以及水相电解质成分对其在溶液中形成双电层的贡献程度和如何影响电湿润及电毛细性质还不清楚。项目拟采用不同疏水性离子液体为材料，借助于物理、物理化学及常规化学分析方法，对纯净疏水性离子液体在不同电解质溶液环境中的介质上电湿润静态特性及电毛细作用的动态特性进行测定，对离子液体在萃取具有不同电荷及疏水性化学物后的电湿润特性进行研究，对微流控通道中表面电渗流对其电毛细动态特性进行研究，并对疏水性离子液体与水溶液构成的两相微全分析原理进行探究，为进一步利用疏水性离子液体的介质上电湿润及电毛细特性，开发环境污染化合物监测方法的有关研究提供原理方面的基础资料。

中文关键词： 离子液体；电毛细作用；微流控分析；液滴；环境污染物

英文摘要： As a green extractor ionic liquids have been extensively studied in extraction area，the attention is given in electrowetting area, and discretizatized droplet control technology in the air medium has made progress. But so far, no paper was found on electrocapillary dynamics of ionic liquid in the aqueous solutions，that believed great applicapability on the microfluidic fluidics. The difference of solubility between positively and negatively charged components of the hydrophobic ionic liquids is the reason of electric double layer formation in aqueous solutions. Meanwhile, the electrowetting and electrocapillary properties of ionic liquid is not only affected by variable electrolyte composition in solution，but also by different charge and hydrophobicity of the extracted compounds when extraction carried out. This contribution to the electric double layer and effects on electricwetting and electrocapillary properties of ionic liquids is not clear. This project intends to adopt a range of hydrophobic ionic liquids and different charges or hydropobicities compounds as extraction materials, by means of physical, physical and chemical, and chemical analysis methods to solve the above problems. The main contents of study as follows: 1) Electrowetting-on-dielectric properties(EWOD). EWOD of the hydrophobic ionic liquids

英文关键词： ionic liquids；electrocapillary effect；microfluidic analysis；droplet；environmental pollutants