Table 4.
Wettability and colour parameters for the CIEL*a*b* space of neat PCL and the formulations with GR and BW.
| Material | Wettability | Colour | ||
|---|---|---|---|---|
| Contact Angle (θ°) | L* | a* | b* | |
| PCL | 75.6 ± 1.0 a | 76.17 ± 0.40 a | −0.92 ± 0.18 a | −1.25 ± 0.32 a |
| PCL-GR | 80.0 ± 0.6 b | 70.74 ± 1.41 b | −2.16 ± 0.10 b | 10.98 ± 1.05 b |
| PCL-GR-BW | 95.1 ± 1.4 c | 75.41 ± 0.69 a | −1.33 ± 0.11 c | 15.65 ± 1.38 c |
| PCL-BW | 97.7 ± 1.1 d | 70.73 ± 0.83 b | 0.07 ± 0.04 d | 20.90 ± 0.81 d |
a–d Different letters within the same property show statistically significant differences between formulations (p < 0.05).