Table 2.
Total surface free energy (γ). Lifshitz van der Waals component (γLW), Acid-base component (γAB) with the contribution of electron donor (γ−) and electron acceptor (γ+) interactions, total surface free energy (γs) and polarity (γAB γ−1 x 100) of adaxial and abaxial olive leaf surfaces
| Leaf side | γLW (mJ m−2) | γ− (mJ m−2) | γ+ (mJ m−2) | γAB (mJ m−2) | γs (mJ m−2) | Polarity (%) | δ (MJ1/2 m−3/2) |
|---|---|---|---|---|---|---|---|
| Adaxial | 28 | 20.26 | 0.08 | 3 | 31 | 8 | 16 |
| Abaxial | 27 | 13.24 | 1.62 | 9 | 37 | 25 | 19 |