Table 5. Calculated Gibbs Free Energy of Spreading (ΔGS) during Compression and Expansion Cycles from the Surface Pressure (π)–Area/Molecule (A) Hysteresis Studies of Myo/DOPC Mixtures at the Myo Mole Fraction of 0.95 (XMyo = 0.95) Recorded at T = 20 °C at Three Different pH Values of the Subphase, i.e., pH = 3, 7, and 9.
| pH | ΔGS (compression) (J/mol) | ΔGS (expansion) (J/mol) |
|---|---|---|
| 3 | 151.83 | –81.79 |
| 7 | 193.75 | –147.62 |
| 9 | 155.33 | –105.04 |