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Surface concentration (%) investigation by XPS on coated and uncoated electrospun PHB fibers.
| Peak | C1s | O1s | ||
|---|---|---|---|---|
| Peak assignment | –CH | –CO | O–C=O | |
| Binding energy (eV) | 284 | 286 | 288 | 530 |
| PHB (%) | 22 | 14 | 3 | 20 |
| PMMA coated PHB (%) | 42 | 16 | 12 | 26 |
| Poly(MMA-co-MAA) coated PHB (%) | 44 | 13 | 15 | 26 |
