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The content of functional groups of PI filaments with and without O2 plasma treatment.
| Treatment Time (s) | Concentrations of Correlative Functional Groups (%) | |||
|---|---|---|---|---|
| C–C (284.5 eV) | C–N (285.0 eV) | C–O (286.1 eV) | C=O (288.3 eV) | |
| 0 | 60.5 | 24.2 | 11.2 | 4.1 |
| 60 | 55.0 | 24.5 | 14.8 | 5.7 |
| 120 | 49.7 | 24.3 | 20.2 | 5.8 |
| 180 | 42.1 | 24.9 | 26.4 | 6.6 |
| 240 | 49.8 | 24.4 | 19.4 | 6.4 |
