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The electrospinning parameters and the TPU nanofibers characteristics at different concentrations.
| Comp. | Concentration (%) | Voltage (kV) | Flow rate (mL/h) | Rotation speed (rpm) | Needle tip to collector distance (mm) | Average diameter (nm) |
|---|---|---|---|---|---|---|
| TPU6 | 6% | 19 | 1.5 | 500 | 140 | 245 |
| TPU8 | 8% | 19 | 1.5 | 500 | 140 | 360 |
| TPU10 | 10% | 19 | 1.5 | 500 | 140 | 1063 |
| TPU12 | 12% | 19 | 1.5 | 500 | 140 | 798 |
