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Elemental compositions and ratios of the tested surfaces obtained by X-Ray photoelectron spectroscopy (XPS).
| Samples | C1s% | O1s% | N1s% | S2p% | O1s/C1s | N1s/C1s | S2p/C1s |
|---|---|---|---|---|---|---|---|
| PE | 98.7 | 1.3 | - | - | 0.013 | - | - |
| PEH | 98.6 | 1.4 | - | - | 0.014 | - | - |
| PEF | 98.7 | 1.3 | - | - | 0.013 | - | - |
| PET | 87.2 | 11.7 | 1.1 | - | 0.134 | 0.013 | - |
| PETH | 85.7 | 13.3 | 0.8 | 0.2 | 0.155 | 0.009 | 0.0023 |
| PETF | 82.3 | 14.8 | 0.5 | 2.4 | 0.18 | 0.006 | 0.0292 |
