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Atomic ratios of carbon, nitrogen, and oxygen on the surface of CS-PCL/PCL (40/60), CS-PCL/PCL (20/80), and PCL nanofibrous scaffolds determined by x-ray photoelectron spectroscopy
| Nanofibers | Carbon ratio (%) | Nitrogen ratio (%) | Oxygen ratio (%) |
|---|---|---|---|
| CS-PCL/PCL (40/60) | 74.38 | 0.31 | 25.31 |
| CS-PCL/PCL (20/80) | 74.64 | 0.24 | 25.12 |
| PCL | 75.54 | 0 | 24.46 |
Abbreviations: CS-PCL, cationic chitosan-graft-poly (ɛ-caprolactone); PCL, polycaprolactone.
