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The average pore size, porosity and pore density of TPU, TPU/DA, TPU/NS1, TPU/NS2.5 and TPU/NS5 membranes
| Pore size (μm) | Porosity (%) | Pore density (pores/mm2) | |
|---|---|---|---|
| TPU | 84.1 ± 12.3 | 69.5 ± 3.6 | 88.9 ± 7.2 |
| TPU/DA | 82.3 ± 11.9 | 67.0 ± 6.6 | 89.8 ± 12.2 |
| TPU/NS1 | 85.5 ± 18.4 | 65.4 ± 5.2 | 83.3 ± 6.9 |
| TPU/NS2.5 | 85.0 ± 16.9 | 65.4 ± 5.6 | 84.3 ± 9.5 |
| TPU/NS5 | 83.3 ± 10.6 | 64.8 ± 5.0 | 85.2 ± 6.4 |
