Table 2.
XPS peak fitting date from the high resolution C 1s spectra of BPF and PF films during UV weathering.
| Aging Time | Peak Area (%) | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C1 (284.8, C–H) a | C2 (285.6, C–O) | C3 (286.5, C=O) | C4 (288.4, O–C=O) | |||||||||||||
| 0 | 1 | 2 | 3 b | 0 | 1 | 2 | 3 | 0 | 1 | 2 | 3 | 0 | 1 | 2 | 3 | |
| 0 | 84.3 | 81.9 | 80.0 | 78.6 | 13.6 | 14.6 | 14.2 | 14.8 | 2.1 | 3.0 | 4.8 | 5.2 | — | 0.5 | 1.0 | 1.4 |
| 120 | 80.3 | 79.8 | 77.9 | 74.0 | 14.2 | 12.8 | 15.3 | 15.1 | 3.1 | 4.7 | 3.7 | 7.3 | 2.4 | 2.7 | 3.1 | 3.6 |
| 240 | 75.1 | 73.2 | 74.3 | 72.3 | 14.8 | 16.5 | 14.4 | 18.0 | 5.6 | 6.6 | 6.7 | 5.5 | 4.5 | 3.7 | 4.6 | 4.2 |
| 480 | 70.9 | 70.3 | 70.9 | 71.2 | 13.9 | 16.9 | 16.0 | 17.4 | 10.0 | 8.2 | 6.6 | 6.3 | 5.2 | 4.6 | 6.5 | 5.1 |
| 960 | 66.2 | 67.0 | 68.1 | 68.4 | 13.4 | 14.7 | 14.2 | 14.9 | 10.8 | 8.7 | 8.6 | 8.2 | 9.6 | 9.6 | 9.1 | 8.5 |
a Element group (Binding energy (eV), Bond type); b Resin type (0: PF; 1: 10%BPF; 2: 20%BPF; 3: 30%BPF).