| 用表面张力、电导和荧光光度法测定阳离子表面活性剂的胶束形成 |
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| 引用本文： | 张颖,王秀红,魏西莲.用表面张力、电导和荧光光度法测定阳离子表面活性剂的胶束形成[J].聊城大学学报(自然科学版),2012,25(2):34-38,51. |
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| 作者姓名： | 张颖 王秀红 魏西莲 |
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| 作者单位： | 聊城大学山东省化学储能与新型电池技术重点实验室,化学化工学院,山东聊城252059 |
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| 基金项目： | 国家自然科学基金，聊城大学大学生科技文化创新项目 |
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| 摘 要： | 用表面张力、电导和法荧光光度法测定了阳离子表面活性剂3-对壬基酚基-2-羟丙基三甲基溴化铵(NPTAX,X=Cl,Br,I)的胶束化行为.根据实验数据及相应的公式确定出临界胶束浓度(cmc)、胶束聚集Gibbs自由能(ΔGm),临界胶束浓度时的胶束解离度(α0)和胶束聚集数.考察了温度、浓度和反离子对这些参数的影响.
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| 关 键 词： | 阳离子表面活性剂 临界胶束浓度 胶束解离度 胶束聚集数 |
Micelle Formation of Cationic Surfactants in Aqueous Solution Measured by Surface Tension, Conductivity and Fluorescence Measurements |
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| ZHANG Ying,WANG Xiu-hong,WEI Xi-lian.Micelle Formation of Cationic Surfactants in Aqueous Solution Measured by Surface Tension, Conductivity and Fluorescence Measurements[J].Journal of Liaocheng University:Natural Science Edition,2012,25(2):34-38,51. |
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| Authors: | ZHANG Ying WANG Xiu-hong WEI Xi-lian |
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| Institution: | (Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology,School of Chemistry and Chemical Engineering,Liaocheng University,Liaocheng 252059,China) |
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| Abstract: | The detailed micellization behavior of cationic surfactants 3-p-nonylphenoxy-2-hydroxypropyl trimethyl ammonium halide(NPTAX,X = Cl,Br,I) was studied by surface tension,conductivity and steady-state fluorescence measurements in the temperature range of 15 to 50 ℃.The critical micelle concentrations(cmc),thermodynamics of micellization(ΔGm),degree of counterion dissociation(α0) at the cmc and aggregation number(Nagg) were determined from experimental data.The effects of temperature and concentrations of surfactant on their various properties in aqueous solution have been investigated,respectively. |
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| Keywords: | cationic surfactant critical micelle concentration micelle degree of counterion micelle aggregation number |
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