中文摘要：

阴离子表面活性剂（十二烷基苯磺酸钠）和离子液体（1-丁基-3-甲基咪唑四氟硼酸盐,离子液体[Bmim]BF4中）和水的混合物在一定组成范围内能自发形成两个独立的水相（水溶液两相体系,ATPS）：一个是表面活性剂富相,另一种是离子液体富相.在20.0℃测定了十二烷基苯磺酸钠/[离子液体]BF4/水三元体系的相图.采用浊度滴定法确定了不同特定区域的边界线.结果表明：双水相区域接近水-离子液体[Bmim]BF4的一侧,比较狭窄.探讨了双水相的形成条件,组分以及它们的物化性能.同时测定了温度、表面活性剂和离子液体的含量对ATPS的相分离时间和相体积比的影响.用透射电子显微镜（TEM）和稳态荧光猝灭测量（SFQM）技术得到的结果表明,发生两相分离可能是由于体系中有较大的胶束聚集体存在引起的.

英文摘要：

The aqueous mixtures of an anionic surfactant（sodium dodecyl benzene sulfonate,SDBS） and an ionic liquid（1-butyl-3-methylimidazolium tetrafluoroborate,BF4） within a certain range of compositions can spontaneously separate into two immiscible aqueous phases（ATPS）： one surfactantrich and the other ionic liquid-rich.The phase diagrams of the ternary system of the SDBS/BF4/water were drawn based on experimental data determined at 10.0,20.0 and 30.0℃,respectively.The borderlines of the different specific regions in the diagrams were determined using turbidity titration method.The narrow two-phase region aqueous were found to be close to the water-BF4 side.The formation conditions,compositions,and physicochemical properties of the aqueous two phases have been studied.The effects of temperature,surfactant and ionic liquid content on the phase separation time and phase volume ratio of the ATPS were also investigated.This phase separation phenomenon was found to be likely due to the existence of micelle aggregates with quite large size obtained by Transmission Electron Microscopy（TEM） and Steady-state Fluorescence Quenching Measurements（SFQM） methods.