化学学报 ›› 1996, Vol. 54 ›› Issue (1): 1-6.    下一篇

研究论文

阴/阳离子表面活性剂复配体系的中相微乳液研究

李方;李干佐;房伟;李锡忠   

  1. 山东大学胶体与界面化学研究所
  • 发布日期:1996-01-15

The studies of middle phase microemulsion formed by mixed anionic/cationic surfactants

LI FANG;LI GANZUO;FANG WEI;LI XIZHONG   

  • Published:1996-01-15

阴离子表面活性剂双-2-乙基己基磺化琥珀酸钠(简称AOT), 和阳离子表面活性剂十六烷基三甲基溴代铵(简称CTAB), 在有醇、正辛烷、盐水存在的情况下,能形成多相微乳液。本文系统地研究了阴/阳离子表面活性剂配比、醇的种类、醇的浓度对该体系的中相微乳液的形成及特性的影响, 得到了中相微乳液的特性参数(最佳含盐量S^*, 最佳中相微乳液体积V^*, 界面张力r~E、盐宽△S等)。这些性质对与阴/阳离子表面活性剂复配体系, 三次采油及日用化工上的应用开发具有重要意义。最后还开展单独阴离子表面活性剂体系和阴/阳离子表面活性剂复配体系进行了比较, 得到一些有价值规律, 并从理论上进行了探讨。

关键词: 阳离子表面活性剂, 阴离子表面活性剂, 表面张力, 中相微乳液, 复配体系, 最佳含盐量

In the pressent of alcohol, octane and brine, di(2-ethylhexyl) sulfosuccinate (AOT) and cetyltrimethylammonium bromide (CTAB) can form the middle phase microemulsion. Using salinity (or concentration of alcohol) scanning and interfactial tension methods, we investigated the influence of molar ratio of AOT to CTAB, salinity, concentration and kind of alcohol on the formation and characteristic of middle phase microemulsion. This mixed anionic/cationic surfactant system showed very different phenomena with anionic surfactant and mixed and ionic/anionic surfactant system. The results are of partical importance to detergents, cosmetics, and tertiary oil recovery.

Key words: CATIONIC SURTACTANTS, ANIONIC SURFACTANTS, SURFACE TENSION

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