氯化钠对微乳液形成及增溶热力学的影响  

The Study on the Effect of NaCl on the Formation and on the Solubilization Gibbs Free Energy in Microemulsion System

作　　者：李波 张玉喜[2] 

机构地区：[1]宁波万华聚氨酯有限公司,宁波315812 [2]北京石油化工学院化学工程系,北京102617

出　　处：《北京石油化工学院学报》2009年第2期5-7,共3页Journal of Beijing Institute of Petrochemical Technology

摘　　要：研究了不同盐含量对癸烷/SDS/正戊醇/水微乳体系形成及增溶自由能的影响。实验结果表明,无机盐的加入能明显改变其热力学性质,在质量比为m(SDS)∶m(正戊醇)∶m(癸烷)∶m(水)=9∶10∶11∶70组成的微乳液体系中,随着NaCl含量的增加,该体系ΔG形成和ΔG增溶均呈现出类似于正弦波的波动,并且在同一条件下ΔG形成总是远远大于ΔG增溶,改变癸烷和水的配比,该体系能形成液晶。The effect of NaCl on the formation and the solubilization Gibbs free energy in microe- mulsion of the decane/SDS/n-pentanol/water system is studied in this article. Experimental results shows that adding NaCl into the system can change its thermodynamical properties obviously. When m（SDS） ： m（n-pentanol） ： m（decane） ： re（water）=9 ： 10 ： 11 ： 70, as the content of NaCl increase, the Gibbs free energies of the formation and the solubilization of the system both present variation trends whose forms resemble sine curves, and the Gibbs free energy of formation is always far larger than that of solubilization under the same condition. The liquid crystal can be formed by changing the ratio of decane and water of the system.

关 键 词：微乳液 表面活性剂 无机盐 形成自由能 增溶自由能 

分 类 号：O648[理学—物理化学]