Table 2.
Thermal properties of the fibrous membranes and respective raw materials assessed via DSC. Tm and Tc are melting temperature (for 1st and 2nd heating profiles) and the temperature of cold crystallisation, respectively.
| Material | Tm (°C) 1st | Tm (°C) 2nd | Crystallinity% | Tc (°C) |
|---|---|---|---|---|
| PVDF pellet | 175.2 | 173.6 | 45.8 | 137.3 |
| PVDF powder | 159.1 | 159.7 | 37.5 | 127.8 |
| PVDF275SBSA25 | 168.6 | 172.0 | 45.3 | 141.6 |
| PVDF275ESA20 | 168.3 | 172.3 | 42.9 | 142.3 |
| PVDF534ESR16 | 158.5 | 163.7 | 42.7 | 130.0 |
| PVDF534ESR21 | 157.4 | 163.8 | 45.2 | 129.6 |
| PVDF534ESR16HA5 | 158.9 | 163.8 | 36.6 | 135.2 |
| PVDF534ESR16HA10 | 158.9 | 162.1 | 38.5 | 134.8 |
| PVDF NP | 175.5 | 175.4 | 44.1 | 151.5 |
| PVDF POL | 168.1 | 172.0 | 45.6 | 149.9 |