Research Article
Apparent Surface Free Energy of Polymer/Paper Composite Material Treated by Air Plasma
Table 3
The centration of functional groups on the surface from XPS for the untreated and plasma treated samples.
| ā | Name | % at cont. | Group |
| Untreated sample | C 1s A | 61.1 | C-C, C-H | C 1s B | 27.8 | C-O-C, C-OH, C-N | C 1s C | 3.4 | C=O | C 1s D | 7.7 | O=C-O= | O 1s A | 13.7 | C=O | O 1s B | 59.3 | C-OH | O 1s C | 27.0 | O=C-O- | N 1s A | 91.0 | Amine | N 1s B | 9.0 | N-O |
| Sample treated with plasma | C 1s A | 57.1 | C-C, C-H | C 1s B | 25.9 | C-O-C, C-OH, C-N | C 1s C | 7.2 | C=O | C 1s D | 9.7 | O=C-O= | O 1s A | 18.4 | C=O | O 1s B | 55.8 | C-OH | O 1s C | 25.8 | O=C-O- | N 1s A | 14.6 | Imine | N 1s B | 66.8 | Amine | N 1s C | 18.6 | N-O |
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