Table 2.
Mean values and standard deviation of thickness (μm), moisture content (g of water/100g dry film), solubility in water (g soluble film/100g dry film), contact angle (°) and water vapor permeability (g· mm/kPa·h·m2) of the studied formulations conditioned at 53% R.H. and 25 °C.
| Formulations | Thickness | Moisture | Solubility in water | Contact angle | Water vapor permeability |
|---|---|---|---|---|---|
| PLA | 175 ± 26a | 0.36 ± 0.05a | 0.30 ± 0.09a | 63.3 ± 1.5d | 0.36 ± 0.11a |
| TPS | 439 ± 34c | 11.0 ± 0.8d | 28.4 ± 0.8c | 52.3 ± 0.6a | 9.43 ± 0.76d |
| PLA75/TPS25 | 198 ± 34b | 3.7 ± 0.5c | 6.6 ± 0.9b | 61.7 ± 2.5c | 2.30 ± 0.87c |
| PLA75/TPS25/ESO1.5 | 181 ± 17ab | 3.1 ± 0.4bc | 6.3 ± 1.7b | 61.0 ± 2.6c | 1.52 ± 0.33b |
| PLA75/TPS25/ESO3 | 176 ± 21a | 2.7 ± 0.6b | 6.7 ± 0.3b | 55.5 ± 0.7b | 1.36 ± 0.26b |
Different superscript letters mean significant differences (p < 0.05) between formulations.