Effects of System Parameters on Phase Behavior

The parameters Tu, 7j, and T increase if more hydrophilic amphiphiles are used. This is easily explained by the HLB concept a more hydrophilic amphiphile will remain in water up to a higher temperature. 

Another fundamental effect of the amphiphile is a result of its molecular mass (or molar volume) increasing the molecular mass of an amphiphile at constant HLB 

19 Ternary phase diagrams involving nonionic amphiphiles (amph) generating lyotropic liquid crystals with water. (From Kalhweit, M. and Strey, R., Angew. Chem. Int. Ed. Engl., 24, 654, 1985. With permission.) 

The polarity of the oil can be estimated from Hansen s three-dimensional solubility parameters. Hansen separated Hildebrand s solubility parameter into three independent components d for the dispersion contribution, Sp for the polar contribution, and 51, for the H-bonding contribution. As an estimation of the oil polarity, we define Dpi, as the square root of the square of the polar component plus the 

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