Table 5.
Temperature-dependent activation parameter for PKOEs/Tween 80 : Span 80/water systems.
| Formulation | ΔH (kJ mol−1) | ΔG (kJ mol−1) | ΔS (J K−1 mol−1) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temperature, K | Temperature, K | Temperature, K | ||||||||||
| 298 | 303 | 308 | 313 | 298 | 303 | 308 | 313 | 298 | 303 | 308 | 313 | |
| Pre-F | 23.8 | 16.2 | 8.0 | −0.7 | 38.8 | 38.4 | 38.1 | 37.9 | −50.5 | −75.3 | −101.6 | −129.1 |
| FNE1 | 96.1 | 67.3 | 36.4 | 3.3 | 39.9 | 38.7 | 38.4 | 38.3 | 188.6 | 92.0 | −10.7 | −117.8 |
| FNE2 | ||||||||||||
| (a) | 47.6 | 29.3 | 9.8 | −11.1 | 57.6 | 56.5 | 56.0 | 55.5 | −33.8 | −92.9 | −156.1 | −221.6 |
| (b) | 98.9 | 80.2 | 59.9 | 38.3 | 60.9 | 59.8 | 58.5 | 58.1 | 127.5 | 63.7 | −1.7 | −72.7 |
| (c) | 107.5 | 82.1 | 54.9 | 25.7 | 62.9 | 61.7 | 60.9 | 60.6 | 149.6 | 64.1 | −26.3 | −121.3 |
| (d) | 108.2 | 69.2 | 27.3 | −17.4 | 64.0 | 62.5 | 62.2 | 62.0 | 148.3 | 18.5 | −120.0 | −263.8 |
| (e) | 81.7 | 60.8 | 38.3 | 14.3 | 64.7 | 63.9 | 63.3 | 63.3 | 57.1 | −13.7 | −88.0 | −166.6 |
| FNE3 | ||||||||||||
| (a) | 52.8 | 59.2 | 65.9 | 72.9 | 57.8 | 57.1 | 56.3 | 55.4 | −16.8 | 3.7 | 25.0 | 46.9 |
| (b) | 91.7 | 71.9 | 50.6 | 27.9 | 61.3 | 60.0 | 59.5 | 59.0 | 102.0 | 36.0 | −35.4 | −109.0 |
| (c) | 96.5 | 72.3 | 46.3 | 18.5 | 63.2 | 61.8 | 61.2 | 60.7 | 111.8 | 31.1 | −55.0 | −144.7 |
| (d) | 107.0 | 77.0 | 44.9 | 10.5 | 64.1 | 62.8 | 62.2 | 62.1 | 144.0 | 43.3 | −63.1 | −174.8 |
| (e) | 91.0 | 65.8 | 38.8 | 9.9 | 65.0 | 64.1 | 63.5 | 63.5 | 87.0 | 2.2 | −87.1 | −181.2 |
| FNE4 | ||||||||||||
| (a) | 63.3 | 64.7 | 66.0 | 67.4 | 57.9 | 57.2 | 56.4 | 55.7 | 18.0 | 21.5 | 25.2 | 28.4 |
| (b) | 69.0 | 52.2 | 34.2 | 15.0 | 61.4 | 60.4 | 59.7 | 59.3 | 25.3 | −30.4 | −89.1 | −151.0 |
| (c) | 81.2 | 58.8 | 34.7 | 9.0 | 63.5 | 62.2 | 61.6 | 61.1 | 59.5 | −14.7 | −94.1 | −176.4 |
| (d) | 98.1 | 73.9 | 48.0 | 20.2 | 64.3 | 63.1 | 62.6 | 62.3 | 113.4 | 32.0 | −54.3 | −144.5 |
| (e) | 78.3 | 60.4 | 41.1 | 20.4 | 65.2 | 64.3 | 63.8 | 63.6 | 44.2 | −16.6 | −80.7 | −148.2 |
| FNE5 | ||||||||||||
| (a) | 68.0 | 61.1 | 53.7 | 45.7 | 58.2 | 57.5 | 56.7 | 56.2 | 32.7 | 8.8 | −15.8 | −42.7 |
| (b) | 83.7 | 62.1 | 38.9 | 14.1 | 61.9 | 60.6 | 60.0 | 59.5 | 73.1 | 1.6 | −75.2 | −154.7 |
| (c) | 95.2 | 68.7 | 40.2 | 9.8 | 63.9 | 62.6 | 62.1 | 61.8 | 105.3 | 16.6 | −77.6 | −176.1 |
| (d) | 81.7 | 60.0 | 36.8 | 11.9 | 64.4 | 63.5 | 63.3 | 63.1 | 57.9 | −14.9 | −93.0 | −173.8 |
| (e) | 73.5 | 56.1 | 37.5 | 17.5 | 65.2 | 64.4 | 63.9 | 63.7 | 27.6 | −31.0 | −92.7 | −157.8 |