Ternary Phase Diagram for Aerosol OT/Water/Oil System

DOI Web Site Web Site 1 Citations
  • KUNIEDA Hironobu
    Department of Chemistry, Faculty of Engineering, Yokohama National University
  • SATO Toyoki
    Department of Chemistry, Faculty of Engineering, Yokohama National University

Bibliographic Information

Other Title
  • Aerosol OT/水/油の相平衡図
  • Aerosol OT ミズ アブラ ノ ソウ ヘイコウズ ミクロエマルション
  • A Basic Study on Microemulsion
  • ミクロエマルションの基礎研究

Search this article

Abstract

The ternary phase diagram for purified Aerosol OT (AOT) /water/benzene system has been studied at 25 and 50°C. Aqueous micellar solution phase (Wm), lamellar liquid crystalline phase and nonaqueous reversed micellar solution phase (Om) can solubilize a large amount of oil or water respectively at 50°C but small at 25°C. This marked change occured discontinuously around at 40°C in benzene system. HLB of AOT is almost unchanged with temperature, but becomes lipophilic with increasing the water/AOT ratio. <BR>On the other hand, in the presence of added salt (NaCl), Wm+excess oil phase exists at higher temperature, and Om+excess water phase exist at lower temperature. At an optimum temperature, brine containing 0.5 wt% of NaCl and 2, 2, 4-trimethyl pentane can dissolve each other in arbitrary ratios with only 3.5 wt%/system of AOT. In this case, AOT becomes relatively hydrophilic with increasing temperature.

Journal

Citations (1)*help

See more

Details 詳細情報について

Report a problem

Back to top