FIGURE 16.

Temperature-composition diagram for the DEPE-Cer2 system in aqueous medium (excess water). L_β, gel phase. L_α, fluid phase. H_II, inverted hexagonal phase. (•, ○) Respectively, onset and completion temperatures of the gel-fluid phase transition, data from the third heating scan. (▾) Onset temperature of the L_α-H_II transition, data from the second heating scan. Average values ± SD (n = 3). In most cases, the standard deviation is smaller than the size of the symbol. The dotted line represents the lowest boundary of the H_II phase (see main text for details).