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XPS high resolution C1s peak fit results for PET fiber samples modified with NaSS.
| C1s species (percent) | ||||
|---|---|---|---|---|
| C-C/C-H | C-O/C-SO3 | O=C-O | shakeup satellite | |
| B.E. (eV) | (285.0) | (286.6) | (289.3) | (291) |
| PET Theory | 60 | 20 | 20 | |
| NaSS Theory | 87.5 | 12.5 | ||
| PET As Is | 56.0 | 24.0 | 17 | 3 |
| PET Ozonated | 55.0 | 25.0 | 17 | 3 |
| 1 hour NaSS | 73 | 16 | 4 | 2 |
