Table 5.
Degree of crystallinity (%) of melt-processed PVDF and PVDF/PLA blends before and after stretching (stretching ratio R = 3) at 60 °C, 80 °C, and 100 °C, along with their electrospun counterparts
| Xc,PVDF | Xc, PLA | |
|---|---|---|
| PVDF | 41 | |
| PVDF/PLA 95/05 | 43 | 15 |
| PVDF/PLA 60/40 | 42 | 14 |
| PVDF-R3T60 | 41 | |
| PVDFPLA 60/40-R3T60 | 43 | 27 |
| PVDF-R3T80 | 43 | |
| PVDF/PLA 95/05-R3T80 | 41 | 33 |
| PVDF-R3T100 | 43 | |
| PVDF/PLA 95/05-R3T100 | 44 | 33 |
| PVDF-ES | 52 | |
| PVDF/PLA 95/05-ES | 48 | 19* |
*the crystallinity was calculated by subtracting the melting peak of an electrospun PVDF/PLA 95/05 with the melting peak of a PVDF/PLA 95/05 with an amorphous PLA having the same molecular weight than the crystalline PLA used in this study