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Nitrogen permeability as determined from regression analyses of data in Fig. 9. Data shown represents the linear fit coefficient ± SE (n = 4). As PX0 fibres were not gas permeable they are excluded here.
| Fibre formulation | Nitrogen permeability (×105 Lm-2 h-1 bar-1) | Mean pore size (µm) |
|---|---|---|
| PX10 | 1.6 ± 0.1 | 0.26 |
| PX20 | 2.5 ± 0.2 | 0.06 |
| PX40 | 2.9 ± 0.2 | 1.01 |
| PX60 | 7.0 ± 0.8 | 1.79 |
