化学学报 ›› 1993, Vol. 51 ›› Issue (8): 729-735.    下一篇

研究论文

阴离子型表面活性剂所组成微乳液的异常流变性

伍世英;陈宗淇;王世权;李莹;袁云龙;张传胜   

  1. 青岛化工学院应用化学系;山东大学化学系
  • 发布日期:1993-08-15

The bizarre rneological properties of microemulsion with anionic surfactant

WU SHIYING;CHEN ZONGQI;WANG SHIQUAN;LI YING;YUAN YUNLONG;ZHANG CHUANSHENG   

  • Published:1993-08-15

对以正十六烷、油酸钾、正己醇和水所组成的微乳液进行研究,对其流变性和机理作了探讨.微乳液粘度和水油比变化的关系可用相转化来说明.层形结构区显示出有高粘度特征,并具有明显的负触变性现象.对此进行了讨论,并研究了pH值和盐类的影响.

关键词: 乙醇, 阴离子表面活性剂, 流变性质, 油酸 P, 油田开发, 乳化液, 微乳液, 十六碳烷

Optically transparent oil-water dispersions (microemulsions) formed spontaneously upon mixing hexadecane, hexanol, K oleate, and water in specific proportions. Microemulsion viscosities were measured for several oil-water ratios. The striking optical and viscosity changes observed at specific water/oil ratios are consistent with a phase inversion mechanism of the type water spheres ?water cylinders ?water lamellae ?continuous water phase. In the lamellar region, the dispersion exhibits neg. thixotropic and shear thickening properties. The abnormal rheol. properties exhibited by dispersions with water/oil ratio = 1 are explained in terms of ion-dipole association between oleate and hexanol mols. on adjacent droplets. This phenomenon was studied as a function of pH, water ratio, and added salt (KCl, BaCl2, LaCl3) nature and concentration

Key words: ETHANOL, ANIONIC SURFACTANTS, RHEOLOGICAL PROPERTY, OLEIC ACID P, OIL FIELD DEVELOPMENT, EMULSIFYING LIQUID, MICROEMULSION

中图分类号: