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  

Micelle Formation of Cationic Surfactants in Aqueous Solution Measured by Surface Tension,Conductivity and Fluorescence Measurements

作　　者：张颖[1] 王秀红[1] 魏西莲[1] 

机构地区：[1]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

出　　处：《聊城大学学报（自然科学版）》2012年第2期34-38,51,共6页Journal of Liaocheng University:Natural Science Edition

基　　金：国家自然科学基金(21073081);聊城大学大学生科技文化创新项目(SRT11044HX2)

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.The detailed micellization behavior of cationic surfaetants 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 mieellization （△Gm）, degree of counterion dissociation （a^0） at the eme 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.

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 

分 类 号：TQ423[化学工程]