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以环境友好型的Tween80为表面活性剂,以醇(乙醇、正丁醇、正己醇、正辛醇、正癸醇和异戊醇)为助表面活性剂,对离子液体1-丁基-3-甲基咪唑六氟磷酸盐(bmimPF6)和甲苯进行了微乳化实验,绘制了不同条件下Tween80离子液体的微乳体系的拟三元相图,考察了醇的种类、含量对单相微乳区的影响,并用电导法研究了在乙醇为助表面活性剂情况下,单相微乳区的结构转变.结果表明,当醇(异戊醇)固定时,随着表面活性剂/醇的质量比增加,单相微乳区的面积逐渐增大;不同链长的直链醇对单相微乳区的面积影响与该醇在离子液体中的溶解情况有关,单相微乳区的面积随着直链醇链长的增加而越小;当乙醇作助表面活性剂时,所得到的单相微乳区的面积最大,且单相微乳区存在着O/IL(oil-in-ionic liquid)、双连续相和IL/O(ionic liquid-in-oil)三种微结构.尤其对离子液体微乳体系的电导随油的含量的增加而最初增大的现象进行了解释,这一现象是由于油主要起到减少离子液体中离子对或离子的积聚,提高带电离子淌度的作用.
Using environment-friendly Tween80 as surfactant and alcohol (ethanol, n-butanol, n-hexanol, n-octanol, n-decanol and isoamyl alcohol) as cosurfactants, The microemulsion experiments of methylimidazolium hexafluorophosphate (bmimPF6) and toluene were carried out. The quasi-ternary phase diagram of the microemulsion system of Tween80 ionic liquid under different conditions was plotted, , And the conductivity transition method was used to study the structure transition of single-phase microemulsion in the presence of ethanol as a cosurfactant.The results showed that when the alcohol (isoamyl alcohol) was immobilized, with the mass ratio of surfactant to alcohol The area of single-phase microemulsion gradually increased. The influence of different chain length of linear alcohol on the area of single-phase microemulsion was related to the dissolution of the alcohol in ionic liquid. The area of single-phase microemulsion increased with the increase of When ethanol acts as co-surfactant, the area of single-phase microemulsion obtained is the largest, and there is O / IL (oil-in-ionic liquid) ), Bicontinuous phase and ionic liquid-in-oil (IL / O), especially for the conductivity of ionic liquid microemulsion system Increase in the amount of the initial increase in the phenomenon explained, this phenomenon is due primarily as an oil decreased accumulation of ions in the ionic liquid or ionic effect of increasing the mobility of the charged ions.