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Electroconductivity and contact angle of PBI films (and diameter of the PBI electrospun fibers) (mean ± sd) (* = p-value < 0.05).
| Films | Fibers | ||
|---|---|---|---|
| Contact Angle (θ) |
Electroconductivity (S cm−1) |
Diameter (nm) | |
| PBI | 44.9 ± 2.1 | (9.0 ± 1.9) × 10−8 | 131 ± 37 |
| PBI-H2SO4 | 39.3 ± 9.7 | (2.4 ± 2.2) × 10−4 | 204 ± 65 (*) |
| PBI-CSA | 51.3 ± 4.7 | (Low) | 203 ± 67 (*) |
| PBI-HEPES | 70.6 ± 4.2 (*) | (Low) | 183 ± 44 (*) |
| PBI-NaCl | 59.9 ± 8.6 | (Low) | 139 ± 33 |
