文献类型：期刊文献

英文题名：Comparative Investigations on Mixing Behaviors of Cationic Gemini Surfactant with Surface Active Ionic Liquid in Water and in Ethylammonium Nitrate

作者：Wang, Shuzhen[1];Yin, Tianxiang[1];Shen, Weiguo[1,2]

机构：[1]E China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]Lanzhou Univ, Dept Chem, Lanzhou 730000, Gansu, Peoples R China

年份：2014

卷号：53

期号：47

起止页码：18202

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20144900288911);WOS:【SCI-EXPANDED(收录号:WOS:000345720600013)】；

基金：This work was supported by the National Natural Science Foundation of China (Projects 21173080, 21373085 and 21303055).

语种：英文

外文关键词：Ionic liquids - Micelles - Phase interfaces - Mixing - Nitrates - Gibbs free energy - Free energy

摘要：The properties of mixed surfactants of 1-tetradecyl-3-methylimidazolium bromide (C(14)mimBr) and the gemini surfactant N,N'-bis(dimethyldodecyl)-1,2-ethanediammonium dibromide (12-2-12) in water and in ethylammonium nitrate (EAN) were studied by surface tensiometry. The critical micelle concentration (cmc) values of the mixed surfactants were determined and found to be much larger in EAN than in water. The nonideal mixing behaviors were observed at the air/solvent interface and in the mixed micelle both in water and in EAN. The surface pressure at the cmc (pi(cmc)), the maximum surface excess (G(max)), the minimum surface area per molecule (A(min)), the standard Gibbs free energies of micellization (Delta G(m)(0)) and adsorption (Delta G(ads)(0)), and the excess Gibbs free energy of mixed micelles (Delta G(E)) were determined. It was found that physicochemical properties of C(14)mimBr/12-2-12 mixed systems in water and in EAN were significantly different, which was discussed in terms of different properties of the solvents.