Table 2.
The contact angles (°) of diiodomethane (D) and glycerol (G), the surface free energy (γs), dispersive (γsd) and polar (γsp) components for polymer films based on sodium alginate, gelatin, and glycerol with the addition of lipids (calculated by Owens–Wendt method).
| Sample | Contact Angle (°) | Surface Free Energy (γs) (mJ/m2) | Dispersive (γsd) and Polar (γsp) Components (mJ/m2) | ||
|---|---|---|---|---|---|
| D | G | γsd | γsp | ||
| ALG/GEL/G (1%) | 54.2 | 61.5 | 37.56 | 23.92 | 13.64 |
| ALG/GEL/G (10%) | 69.3 | 99.9 | 23.12 | 22.75 | 0.39 |
| ALG/GEL/G (1%)/L (1.7%) | 38.2 | 39.0 | 51.92 | 28.69 | 23.24 |
| ALG/GEL/G (1%)/L (3.4%) | 48.8 | 51.8 | 43.58 | 25.19 | 18.40 |
| ALG/GEL/G (10%)/L (1.7%) | 34.6 | 22.5 | 59.21 | 28.28 | 30.93 |
| ALG/GEL/G (10%)/L (3.4%) | 39.5 | 45.2 | 48.81 | 29.08 | 19.72 |