NaDEHP/醇/正庚烷/水微乳液体系的结构参数研究

STUDY OF THE STRUCTURAL PARAMERTS OF NaDEHP/ALCOHOL/ n -HEPTANE/H 2O MICROEMULSION SYSTEMS BY DILUTION METHOD

用稀释法求得了ＮａＤＥＨＰ［（二（２乙基己基）磷酸钠）／醇／正庚烷／水体系的Ｗ／Ｏ型微乳液中胶团的结构参数，粒核半径ＲＷ，胶团有效半径Ｒｅ，界面层厚度Ｈ，表面活性剂形成胶团的平均聚集数Ｎ，胶团总数Ｎｄ以及表面活性剂所占总界面积Ａｄ．研究了不同水量及不同醇时，醇从油连续相转移到界面层时自由能变化ΔＧ０ｃ－ｉ．讨论了ΔＧ０ｃ－ｉ与醇碳原子数ｎ以及ＲＷ与含水量的线性关系．

Based on the spherical model theory,the reverse micelle structural paraments of the NaDEHP/alcohol /n heptane/H 2O system. the radius of inner water droplet R w,the effective radius of particle R e,the thickenth of interface H ,the average aggregation number of surfactant N ,the total number of particles N dand the total interfacial area of dispersed phase A d,were obtained by means of dilution method and theoretical calculation.The change of standard free energy ΔG 0 c-i for alcohol to transfer from the continuous phase to the interfacial membranes was also calculated.It was found that the linear relationship exsited between ΔG 0 c-i or R w and the carbon atom number of alcohol n , and between R w and the water content V H 2O .