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日用化学工业:2017,Vol.>>Issue(5):251-256
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离子液体表面活性剂的合成与应用(Ⅴ)——离子液体表面活性剂的聚集热力学和状态
邹文苑,杨许召,徐清杰,王萍,王军
(郑州轻工业学院,河南 郑州 450002)
Synthesis and application of ionic liquid surfactants (Ⅴ)Thermodynamics and behavior of surfactant aggregation
ZOU Wen-yuan,YANG Xu-zhao,XU Qing-jie,WANG Ping,WANG Jun
(Zhengzhou University of Light Industry, Zhengzhou, Henan 450002, China)
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投稿时间:2017-04-14    
中文摘要: 离子液体表面活性剂聚集形成胶束的ΔG0、ΔH0和ΔS0数据表明,聚集过程为熵驱动;离子液体表面活性剂的聚集数与传统表面活性剂相似,一般在40~160之间,其表观流体力学直径(Dh)为数纳米,高浓度形成囊泡时Dh可达100 nm;胶束表面反离子电离度在0.15~0.6之间;离子液体表面活性剂在水和有机溶剂中的聚集状态有差异,在水中的聚集状态与传统表面活性剂相似。
Abstract:Aggregation of ionic liquid surfactants in aqueous solution is an entropy driven process, according to the data of its ΔG0, ΔH0 and ΔS0. Aggregation number of ionic liquid surfactants is similar to that of traditional surfactants, 40-160 in general. The apparent hydrodynamic diameter (Dh) of surfactant aggregation is several nanometers; but in case the concentration of the ionic liquid surfactant is high as forming vesicles, Dh may achieve 100 nm. Ionization degree of counter ions at the surface of surfactant micelles is about 0.15-0.6. Aggregation behavior of ionic liquid surfactants in water is similar to that of traditional surfactant, but the aggregation behavior of ionic liquid surfactants in water is different with that in organic solvents.
文章编号:     中图分类号:TQ423    文献标志码:
基金项目:“十二五”国家科技支撑计划资助项目(2013BAC01B04);国家自然科学基金资助项目(21176228);河南省科技攻关项目(162102210056);郑州市科技攻关项目(141PQYJS555) “十二五”国家科技支撑计划资助项目(2013BAC01B04);国家自然科学基金资助项目(21176228);河南省科技攻关项目(162102210056);郑州市科技攻关项目(141PQYJS555)
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