Table 2.
Effects of in-package atmospheric dielectric barrier discharge cold plasma (ADCP) treatment on the water vapor permeability, oxygen transmission rate, tensile strength, percentage (%) elongation at break, and elastic modulus of polypropylene (PP), low-density polyethylene (LDPE), nylon/PP, and nylon/LDPE films
| Packaging materials | Treatments | Water vapor permeability (g·mm/k·Pa·h·m2) | Oxygen transmission rate (mL/m2·day·atm) | Tensile strength (MPa) | % Elongation at break (%) | Elastic modulus (MPa) |
|---|---|---|---|---|---|---|
| PP | Untreated | 0.014 ± 0.001a | 718.27 ± 175.07a | 14.79 ± 0.59a | 425.08 ± 1.54a | 615.82 ± 13.34a |
| ADCP-treated | 0.013 ± 0.003a | 727.81 ± 44.58a | 13.21 ± 1.43a | 425.97 ± 2.54a | 613.55 ± 3.72a | |
| LDPE | Untreated | 0.016 ± 0.002a | 1201.78 ± 278.83a | 18.71 ± 1.07a | 425.51 ± 1.49a | 211.03 ± 21.08a |
| ADCP-treated | 0.016 ± 0.001a | 1225.46 ± 265.75a | 18.31 ± 0.50a | 427.34 ± 3.09a | 209.30 ± 32.12a | |
| Nylon/PP | Untreated | 0.016 ± 0.002a | 168.58 ± 39.73a | 29.35 ± 2.10a | 87.99 ± 18.72a | 1063.70 ± 12.05a |
| ADCP-treated | 0.015 ± 0.006a | 163.65 ± 27.32a | 29.81 ± 2.33a | 87.67 ± 10.71a | 1076.75 ± 20.01a | |
| Nylon/LDPE | Untreated | 0.013 ± 0.001a | 257.46 ± 28.58a | 30.93 ± 8.18a | 83.03 ± 8.53a | 641.18 ± 5.27a |
| ADCP-treated | 0.012 ± 0.001a | 239.80 ± 18.88a | 30.77 ± 3.34a | 83.80 ± 9.08a | 645.10 ± 36.71a |
Film thickness: 70 µm
The results are expressed as the mean ± standard deviation (n = 9). Values followed by the same letter in the same column are not significantly different (p > 0.05)