Interfacial tension between microemulsion and excess dispersed phases |
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| Institution: | 1. Department of Chemical and Biological Engineering, University of British Columbia, Vancouver BC V6T 1Z3, Canada;2. Agricultural Engineering Department, Cairo University, Giza, Egypt;3. Clean Energy Research Center, Korea Institute of Science and Technology, 14 gil 5 Hwarang-no Seongbuk-gu, Seoul 136-791, South Korea |
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| Abstract: | Two-phase systems consisting of water-in-oil (W/O) microemulsions in equilibrium with excess water and oil-in-water (O/W) microemulsions in equilibrium with excess oil have been prepared using the surfactant sodium bis (2-ethylhexyl)sulphosuccinate (AOT) without cosurfactant. The interfacial tension of the planar interface separating the phases for the W/O case is only weakly dependent upon the volume fraction of droplets in the microemulsion phase whereas for the O/W case, the microemulsion droplet size increases and the tension drops as the dispersed volume fraction is increased. |
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