Table 2.
Thermal properties of polyurethanes. The naming scheme follows the principles below: TPU-DIOL(molecular mass in g/mol)-soft/hard segment concentration in mass %.
| Sample name | Tg of soft segments °C |
Tm of soft segments °C |
Soft segment ΔH, J/g * |
Tg of hard segments, °C |
Tm of hard segments, °C |
Hard segment ΔH, J/g * |
|---|---|---|---|---|---|---|
| TPU-DIOL1135-60/40 | −24(2) | 38.0(5) | 17.2 | - | 203.0(5) | 1.9 |
| TPU-DIOL1327-50/50 | −13(2) | - | - | - | 191.0(5) | 7.0 |
| TPU-DIOL1327-60/40 | −23(2) | 32.0(5) | 7.0 | - | 135.0(5) | 9.3 |
| TPU-DIOL1327-70/30 | −24(2) | 44.0(5) | 33.9 | 123(2) | 200.0(5) | <1.0 |
| TPU-DIOL1540-60/40 | −25(2) | 42.0(5) | 21.1 | - | 208.0(5) | 3.2 |
| TPU-DIOL1540-70/30 | −26(2) | 48.0(5) | 37.5 | - | - | - |
| TPU-DIOL2530-60/40 | - | 51.0(5) | 33.3 | - | 212.0(5) | 8.3 |
*
The values of melting enthalpies are indicative with estimated standard deviation below 1.0 J/g.