Table 1.
Surface properties of the Poly(ethylene terephthalate) (PET) films treated by AC or DC plasma for 60 s as a function of discharge type.
| Sample | θ, deg | W, mJ/m2 | Surface Energy, mJ/m2 | ||||
|---|---|---|---|---|---|---|---|
| θw | θglyc | water | glycerol | γ | γp | γd | |
| PET | 80 ± 1 | 73 ± 1 | 85.4 ± 1.3 | 81.9 ± 1.1 | 26.5 ± 0.7 | 12.4 ± 0.5 | 14.1 ± 0.2 |
| PET-AC | 17 ± 1 | 15 ± 1 | 142.4 ± 0.4 | 124.6 ± 0.3 | 70.0 ± 0.4 | 53.5 ± 0.4 | 16.5 ± 0.1 |
| PET-cathode | 10 ± 1 | 9 ± 1 | 144.5 ± 0.2 | 126.0 ± 0.2 | 72.2 ± 0.2 | 55.8 ± 0.2 | 16.4 ± 0.1 |
| PET-anode | 12 ± 1 | 10 ± 1 | 144.0 ± 0.3 | 125.8 ± 0.2 | 71.6 ± 0.3 | 55.0 ± 0.3 | 16.6 ± 0.1 |
| PET-Chs | 80 ± 1 | 73 ± 1 | 85.4 ± 1.3 | 81.9 ± 1.1 | 26.5 ± 0.7 | 12.4 ± 0.5 | 14.1 ± 0.2 |
| PET-AC-Chs | 49 ± 1 | 45 ± 1 | 120.6 ± 1.0 | 108.2 ± 0.8 | 49.9 ± 0.8 | 15.6 ± 0.1 | 34.4 ± 0.7 |
| PET-cathode-Chs | 50 ± 1 | 57 ± 1 | 119.6 ± 1.0 | 97.9 ± 0.9 | 53.0 ± 0.8 | 48.3 ± 0.6 | 4.7 ± 0.2 |
| PET-anode-Chs | 54 ± 1 | 56 ± 1 | 115.6 ± 1.0 | 98.9 ± 0.9 | 46.9 ± 0.8 | 38.6 ± 0.6 | 8.3 ± 0.2 |