Table 4.
Thermal analysis of various DESs systems and raw components during the first heating and cooling cycles.
| First Heating | First Cooling | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ton (°C) | Tm (°C) | ΔH J/g |
Ton (°C) | Tg (°C) | ΔC J/(g·°C) |
Ton (°C) | Tc (°C) | ΔH J/g |
Ton (°C) | Tg (°C) | ΔC J/(g·°C) |
|
| A1 | - | - | - | −78.5 ± 0.8 | −70.7 ± 0.6 | 0.48 ± 0.02 | - | - | - | −76.4 ± 0.6 | −67.1 ± 0.6 | 0.51 ± 0.02 |
| A2 | - | - | - | −71.8 ± 0.5 | −65.7 ± 0.4 | 0.51 ± 0.01 | - | - | - | −73.9 ± 0.4 | −65.7 ± 0.4 | 0.55 ± 0.03 |
| A3 | - | - | - | −59.7 ± 0.8 | −51.0 ± 0.5 | 0.53 ± 0.02 | - | - | - | −46.8 ± 0.3 | −53.5 ± 0.3 | 0.53 ± 0.02 |
| A5 | - | - | - | −44.6 ± 0.5 | −38.3 ± 0.1 | 0.76 ± 0.03 | - | - | - | −27.6 ± 0.5 | −39.1 ± 0.5 | 0.78 ± 0.03 |
| G1 | - | - | - | - | - | - | - | - | - | - | - | - |
| G3 | - | - | - | −74.5 ± 0.7 | −68.3 ± 0.5 | 0.65 ± 0.03 | −58.4 ± 0.5 | −68.3 ± 0.3 | 0.68 ± 0.03 | |||
| G5 | - | - | - | −77.7 ± 1.0 | −76.1 ± 0.3 | 0.37 ± 0.02 | - | - | - | −66.2 ± 0.8 | −73.2 ± 0.5 | 0.34 ± 0.01 |
| G9 | - | - | - | −70.6 ± 0.9 | −62.3 ± 0.4 | 0.58 ± 0.02 | −54.7 ± 0.9 | −63.7 ± 0.6 | 0.59 ± 0.02 | |||
| L5 | −32.7 ± 1.1 | −23.6 ± 0.4 | 14.84 ± 0.12 | −7.0 ± 0.3 | −11.5 ± 0.2 | 52.60 ± 1.02 | ||||||
| −9.7 ± 0.4 | −0.4 ± 0.2 | 53.70 ± 0.91 | −22.1 ± 0.3 | −30.0 ± 0.1 | 13.90 ± 0.34 | |||||||
| L7 | −17.8 ± 0.4 | −10.3 ± 0.3 | 45.13 ± 0.65 | −42.0 ± 0.3 | −48.8 ± 0.3 | 27.99 ± 0.92 | ||||||
| D3 | −14.7 ± 0.7 | −1.1 ± 0.4 | 78.74 ± 1.02 | - | - | - | −22.2 ± 0.7 | −30.7 ± 0.3 | 70.42 ± 1.26 | - | - | - |
| 12.7 ± 0.5 | 17.6 ± 0.3 | 1.90 ± 0.04 | - | - | - | - | - | - | - | - | - | |
| D4 | −6.5 ± 0.3 | −0.9 ± 0.2 | 113.40 ± 3.28 | −6.1 ± 0.3 | −16.7 ± 0.2 | 136.97 ± 4.25 | ||||||
| ChCl | 63.4 ± 0.8 | 68.7 ± 0.8 | 112.41 ± 2.93 | - | - | - | - | - | - | - | - | - |
| 179.0 ± 0.5 | 182.8 ± 0.5 | 103.71 ± 3.12 | - | - | - | - | - | - | - | - | - | |
| MNT | 31.2 ± 0.4 | 36.1 ± 0.3 | 87.33 ± 1.56 | - | - | - | 20.7 ± 0.4 | 17.2 ± 0.3 | 62.96 ± 1.67 | - | - | - |
| Gla | - | - | - | - | - | - | ||||||
| Oxa | 186.0 ± 0.3 | 191.2 ± 0.5 | 69.44 ± 1.3 | - | - | - | - | - | - | - | - | - |
| Arg | 212.0 ± 0.5 | 221.3 ± 0.7 * | - | - | - | - | - | - | - | - | - | - |
| Gly | - | - | - | −84.4 ± 0.8 | −82.7 ± 0.6 | 0.37 ± 0.01 | - | - | - | - | - | - |
| Sor | 94.4 ± 0.2 | 99.2 ± 0.2 | 169.33 ± 0.32 | - | - | - | - | - | - | 1.3 ± 0.8 | −2.6 ± 0.7 | 1.02 ± 0.02 |
| Ola | −25.6 ± 0.5 | −18.5 ± 0.3 | 12.41 ± 0.41 | - | - | - | 0.5 ± 0.2 | −2.8 ± 0.3 | 91.43 ± 1.42 | - | - | - |
| −0.1 ± 0.3 | 6.4 ± 0.2 | 88.80 ± 0.71 | - | - | - | −17.3 ± 0.3 | −23.0 ± 0.2 | 11.63 ± 0.32 | ||||
| MCT | −11.0 ± 0.5 | −1.9 ± 0.3 | 76.07 ± 0.94 | - | - | - | −37.8 ± 0.2 | −42.1 ± 0.3 | 54.46 ± 0.81 | - | - | - |
| PEG 400 | −12.4 ± 0.6 | 5.0 ± 0.5 | 92.68 ± 1.78 | - | - | - | −13.7 ± 0.5 | −20.4 ± 0.5 | 82.94 ± 1.59 | - | - | - |
* decomposition