| 离子液体[BMim]BF4对SDS水溶液表面活性和聚集能力的促进 |
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| 引用本文： | 雷声,张晶,黄建滨.离子液体[BMim]BF4对SDS水溶液表面活性和聚集能力的促进[J].物理化学学报,2007,23(11):1657-1661. |
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| 作者姓名： | 雷声 张晶 黄建滨 |
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| 作者单位： | Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China |
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| 基金项目： | 国家自然科学基金;国家自然科学基金;国家自然科学基金;国家自然科学基金;国家基础科学人才培养基金 |
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| 摘 要： | 采用表面张力测定法和核磁共振谱等方法研究了阴离子表面活性剂十二烷基硫酸钠(SDS)在水溶性室温离子液体BMim]BF4/水混合溶剂中的表面性质及聚集行为, 发现极少量BMim]BF4的介入就可以显著降低SDS的临界胶束浓度, 提高体系的表面活性; 且BMim]BF4在混合溶剂中所占的摩尔分数(x1)在一定范围内(0
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| 关 键 词： | 离子液体 混合溶剂 十二烷基硫酸钠 临界胶束浓度 表面活性 |
| 收稿时间： | 2007-07-17 |
| 修稿时间： | 2007-07-17 |
Promotion of the Surface Activity and Aggregation Ability of Sodium Dodecylsulfate in Aqueous Solution by Ionic Liquid 1-buty1-3-methyl- imidazolium Tetrafluoroborate |
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| LEI Sheng,ZHANG Jing,HUANG Jian-Bin.Promotion of the Surface Activity and Aggregation Ability of Sodium Dodecylsulfate in Aqueous Solution by Ionic Liquid 1-buty1-3-methyl- imidazolium Tetrafluoroborate[J].Acta Physico-Chimica Sinica,2007,23(11):1657-1661. |
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| Authors: | LEI Sheng ZHANG Jing HUANG Jian-Bin |
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| Institution: | Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China |
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| Abstract: | The surface property and aggregation behavior of an anionic surfactant,sodium dodecylsulfate (SDS),in a mixed solvent of a water-soluble room temperature ionic liquid 1-butyl-3-methyl-imidazolium tetrafluoroborate (BMim]BF_4) and water were investigated by means of surface tension measurements and nuclear magnetic resonance (NMR) spectroscopy.It was found that the critical micelle concentration (cmc) of SDS could be remarkably reduced and the surface activity of the system was enhanced by the addition of a small amount of BMim]BF_4.Moreover,the surface activity and aggregation ability of SDS aqueous solution could be promoted when the molar fraction of BMim]BF_4 in the mixed solvent (x_1) was at the range of 0-0.0458.This promotion function was most efficient at x_1=0.0018. |
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| Keywords: | Ionic liquids Mixed solvent SDS Critical micelle concentration Surface activity |
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