Physicochemical Studies on Microemulsions: V. Additive Effects on the Performance of Scaling Equations and Activation Energy for Percolation of Conductance of Water/AOT/Heptane Microemulsion
Physicochemical Studies on Microemulsions: V. Additive Effects on the Performance of Scaling Equations and Activation Energy for Percolation of Conductance of Water/AOT/Heptane Microemulsion
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DOI：
10.1006/jcis.1996.0512
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发表时间：
1996-10
影响因子：
9.9
通讯作者：
S. Ray;S. Paul;S. P. Moulik
中科院分区：
文献类型：
--
作者：
S. Ray;S. Paul;S. P. Moulik
本文详细研究了水/AOT/正庚烷油包水微乳液在大量添加剂单独和联合存在下的水诱导和温度诱导渗流。添加剂对这一过程既有辅助作用，也有抑制作用。羟基胆盐明显属于前者，而四乙基碘化铵、苯、甲苯、萘、二甲苯和胆固醇构成后者。在水/氨氮/二甲苯非渗滤体系中加入0.5moldm−-3胆酸钠即可制成渗滤液。这两种渗流都遵循标度定律，但方程参数的大小与理论预测的大小不同。在这方面，添加剂有明显的贡献。渗流过程所需的活化能已经确定；在不同添加剂环境中实现的值并不遵循一般趋势。
Abstract Both water-induced and temperature-induced percolation of water/AOT/heptane water-in-oil microemulsion have been studied in detail in the presence of a good number of additives alone and in combination. The additives have shown both assisting and resisting effects on the process. The hydroxy bile salts distinctly fall in the former category while tetraethyl ammonium iodide, benzene, toluene, napthalene, xylene, and cholesterol constitute the latter. The nonpercolating system water/AOT/xylene can be made percolating by the addition of 0.5 mol dm−3sodium cholate. The scaling laws for both kinds of percolation have been found to be obeyed but the equation parameters differ in magnitude from what theory predicts. The additives have a distinct contribution in this regard. The activation energy required for the percolation process has been determined; the values realized in different additive environments do not follow a general trend.