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由 AS(十二烷基磺酸钠),已醇,水和烃四组份构成的微乳液是本文研究的体系。从体系似三组份相图出发得到一系列 n_a/n_s 和 n_o/n_s 数据。两者关联作图得到直线,由其斜率 K 和截距 I计算出已醇从油相转移到微乳液液滴界面相的标准自由能△G_(o→i)~θ。另外,从△G_(o→i)~θ随温度的变化得到过程标准焓△H_(o→i)~θ和标准熵变△S_(o→i)~θ。最后结果指出△H_(o→i)~θ等于零,用计算机拟合得出了△G_(o→i)~θ和△S_(o→i)~θ与碳链长和温度的关系式。对上述结果作了理论探讨和分析。
The microemulsion composed of AS (sodium dodecyl sulfate), hexanol, water and hydrocarbon is the system studied in this paper. A series of n_a / n_s and n_o / n_s data are obtained from the three-component phase diagram of the system. The correlation between the two was plotted as a straight line. From the slope K and intercept I, the standard free energy ΔG_ (o → i) to θ for the transfer of alcohol from the oil phase to the microemulsion droplet interface phase was calculated. In addition, the process standard enthalpy △ H_ (o → i) ~ θ and standard entropy change △ S_ (o → i) ~ θ are obtained from the change of △ G_ (o → i) ~ θ with temperature. The final result indicates that △ H_ (o → i) ~ θ is equal to zero. The relationship between △ G_ (o → i) ~ θ and △ S_ (o → i) ~ θ and carbon chain length and temperature are obtained by computer simulation. The above results made a theoretical discussion and analysis.