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Atomic percentages of CH4/O2 and C2H2F4 plasma-treated and untreated PHB and PHBV films based on the spectral analysis.
| Condition | PHB Film | PHBV Film | ||||||
|---|---|---|---|---|---|---|---|---|
| C (%) | O (%) | F (%) | O/C | C (%) | O (%) | F (%) | O/C | |
| Untreated (Normal) | 79.00 | 21.00 | 0.00 | 0.27 | 72.90 | 27.10 | 0.00 | 0.37 |
| CH4/O2 plasma-treated (Hydrophilic) | 69.98 | 30.02 | 0.00 | 0.43 | 60.80 | 39.20 | 0.00 | 0.64 |
| C2H2F4 plasma-treated (Hydrophobic) | 54.80 | 1.70 | 43.50 | 0.03 | 57.30 | 3.10 | 39.60 | 0.05 |
