Table 1.
Summary of polymer solutions and fibre spinning parameters investigated. Note that poly(vinylidene fluoride) PVDF534ESR16 is indicative of PVDF Mw 534 kg mol−1 (in green) spun using electrospinning (spinning technique in black) into random (R in red, as opposed to aligned, A in red) using a 16% w/v solution (in purple).
| Spinning Method and PVDF Solution Composition | Solution Flow Rate (μL min−1) | Theoretical (dry) Fibre Production Rate (g h−1) | Working Distance (cm) | Collection Speed | Voltage Applied (kV) |
|---|---|---|---|---|---|
| Solution blow spun PVDF275SBSA25
in DMF at 25% w/v |
75 | 1.125 | 30 | 1000 rpm (diameter 5 cm); equivalent linear speed 5.236 m s−1, aligned fibres | None |
| Electrospun PVDF275ESA20
in DMF: acetone (1:1 solvent volume ratio) at 20% w/v |
25 | 0.3 | 15 | 500 rpm (diameter 10 cm); equivalent linear speed 5.236 m s−1, aligned fibres | 15 |
| Electrospun PVDF534ESR16
in DMF:acetone (1:1 solvent ratio) at 16% w/v |
25 | 0.24 | 17.5 | 50 rpm (diameter 10 cm); equivalent linear speed 0.5236 m s−1, random fibres | 17.5 |
| Electrospun PVDF534ESR21
in DMF:acetone (1:1 solvent ratio) at 21% w/v |
25 | 0.315 | 17.5 | 50 rpm (diameter 10 cm); equivalent linear speed 0.5236 m s−1, random fibres | 7.5 |
| Electrospun PVDF534ESR16HA5/10 in DMF:acetone (1:1 solvent ratio) at 16% w/v containing HA at 5 wt.% and 10% wt.% | 25 | 0.24 | 17.5 | 50 rpm (diameter 10 cm); equivalent linear speed 0.5236 m s−1, random fibres | 17.5 |