Table 2. Interfacial Parameters for the Water/DOPC/SqE and Water/DOPC:chol/SqE Interfaces in the Presence of ASA at pH 3 and 25 °C.
| DOPC to ASA mole ratio | monolayer tension, γm (mN/m)a | contact angle, θ (degrees)b | bilayer tension, γB = 2γmcosθ (mN/m) | |free energy of formation| (mJ/m2) |
|---|---|---|---|---|
| 1:0 | 1.12 ± 0.06 | 36.7 ± 0.4 | 1.80 | 0.445 |
| 10:1 | 1.07 ± 0.06 | 35.2 ± 0.4 | 1.74 | 0.391 |
| 4:1 | 1.02 ± 0.07 | 33.1 ± 0.3 | 1.71 | 0.331 |
| 2:1 | 0.92 ± 0.06 | 27.1 ± 0.5 | 1.64 | 0.203 |
| 1:1 | 0.92 ± 0.05 | 25.9 ± 0.6 | 1.66 | 0.185 |
| DOPC:chol (1:1) to ASA mole ratio | monolayer tension, γm (mN/m)a | contact angle, θ (degrees)b | bilayer tension, γB=2γmcosθ (mN/m) | |free energy of formation| (mJ/m2) |
|---|---|---|---|---|
| 1:0 | 1.12 ± 0.09 | 36.4 ± 0.6 | 1.81 | 0.437 |
| 10:1 | 1.00 ± 0.06 | 35.2 ± 0.5 | 1.64 | 0.366 |
| 4:1 | 1.07 ± 0.08 | 32.1 ± 0.3 | 1.81 | 0.327 |
| 2:1 | 0.96 ± 0.05 | 33.1 ± 0.5 | 1.62 | 0.313 |
| 1:1 | 0.92 ± 0.04 | 28.7 ± 0.4 | 1.61 | 0.224 |
a
Each data represents the average for at least 10 independent samples.
b
Each data represents the average for at least 20 independent samples.