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Surface chemical composition (at. %) of the reference foils and foils treated by cinnamon coating.
| Sample | C | N | O | Si |
|---|---|---|---|---|
| PE-UV/O3 | 80.3 | / | 19.4 | |
| PP-UV/O3 | 84.9 | / | 15.1 | |
| PE-CIN | 77.1 | 0.5 | 21.1 | 1.3 |
| PP-CIN | 75.3 | / | 23.6 | 1.1 |
| Difference (%) PE |
−3.2 | 0.5 | 1.7 | 1.3 |
| PP | −9.6 | 0 | 8.5 | 1.1 |
