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Water contact angle, surface free energy and porosity of heat-treated PTFE-NiO composite nanofiber filter mats
| Sample composition | Water contact angle (WCA) (Heat-treated) | Surface Energy (mN/m) |
Porosity (%) |
|---|---|---|---|
| PTFE control | 102.56° ± 2.40 | 21.03 | 50.21 |
| PTFE-NiO (2wt%) | 112.78° ± 1.90 | 19.01 | 67.40 |
| PTFE-NiO (4 wt%) | 119.14° ± 1.00 | 15.44 | 69.82 |
| PTFE-NiO (6 wt%) | 121.55° ± 2.20 | 14.63 | 77.36 |
