（AEO-9/SAS60）/石油醚/醇/水微乳液相行为的研究

Studies on the Phase Behavior of the (AEO-9/SAS60)/Petroleum ether/Alcohol/Water Systems

摘要:

本研究以AEO-9和SAS60为表面活性剂，醇（无水乙醇、正丁醇、正戊醇、正辛醇）为助表面活性剂对水和石油醚进行了微乳化实验，考察了表面活性剂和醇的种类、含量，盐的含量，醇与表面活性剂的质量比对微乳液相行为的影响。结果表明，当AEO-9与SAS60质量比为7:3时，协同效应最好；正戊醇做助表面活性剂时，拟三元相图中微乳区的面积最大；正戊醇与表面活性剂的质量比值为0.8时，体系的溶油量最大；微乳液浓度为1.824g/L时，表面张力为24.49mN/m；微乳液浓度为0.3%时，界面张力可以下降至9.25×10-4 mN/m。

Abstract:

To investigate the influence of different surfactants, alcohols, salts and their contents and the mass ratio of alcohols to surfactants on the isotropic microemulsion zone of the (AEO-9/SAS60)/petroleum ether/Alcohol/water system, pseudo ternary phase diagrams of (AEO-9/SAS60)/petroleum ether/Alcohol/water systems under different conditions were constructed. AEO-9 and SAS60 were used in surfactants. Alcohols used were C2H5OH, n-C4H9OH, n-C5H11OH, n-C8H17OH. Phase diagrams showed that the synergism was the best when the mass ratio of AEO-9 to SAS60 was 7:3. The single-phase region of the n-pentanol-containing system was the largest among the systems studied. The amount of the solubilizing petroleum ether was maximum when the mass ratio of n-butyl alcohol to surfactants was 0.8；Surface tension reached 24.49mN/m when the concentration of microemulsion was 1.824g/L. The oil-water interfacial tension can reached 9.25?0-4mN/m, when the concentration of microemulsion was 0.3%.