Table 4.
The surface tension of PLA solutions at various treatment times (2 kV, 0.5 l min−1, 6% w/v), argon flow rates (5 min, 2 kV, 6% w/v), and applied voltages (5 min, 0.5 lmin−1, 6% w/v).
| Treatment time (min) | Surface tension (mN/m) | Argon flow (lmin−1) | Surface tension (mN/m) | Voltage (kV) | Surface tension (mN/m) |
|---|---|---|---|---|---|
| 0 | 30.4 ± 0.08 | 0 | 30.4 ± 0.08 | 1.6 | 31.3 ± 0.07 |
| 1 | 31.1 ± 0.08 | 0.3 | 31.2 ± 0.08 | 1.7 | 31.4 ± 0.12 |
| 3 | 31.3 ± 0.05 | 0.5 | 31.5 ± 0.09 | 1.8 | 31.3 ± 0.10 |
| 5 | 31.5 ± 0.09 | 0.7 | 31.7 ± 0.09 | 1.9 | 31.7 ± 0.10 |
| 7 | 31.7 ± 0.07 | 0.9 | 31.9 ± 0.16 | 2.0 | 31.5 ± 0.09 |
| 9 | 32.1 ± 0.10 | 1.1 | 32.2 ± 0.17 | 2.1 | 31.8 ± 0.14 |