Table 3.
Surface free energy (γs), solubility parameter (δ), surface free energycomponents, i.e., Lifschitz-van der Waals or dispersive component (γLW or ds) acid-base or non-dispersive component (γAB or nds), electron-donor (γ−s) and the electron-acceptor (γ+s) components), of adaxial red ironbark leaf surfaces calculated by the 3-liquids (3-L), geometric mean (GM) and harmonic mean (HM) methods.
| Method | Test liquids | γLW or ds (mJ m−2) | γ−s (mJ m−2) | γ+s (mJ m−2) | γAB or nds (mJ m−2) | γs (mJ m−2) | δ(MJ1/2 m−3/2) |
|---|---|---|---|---|---|---|---|
| 3-L | W, G, DM | 1.60 | 3.67 | 1.58 | 4.82 | 6.42 | 5.01 |
| GM | W, DM | 2.02 (26.3%) | – | – | 0.13 (−97.3%) | 2.16 (−66.4%) | 2.21 (−55.9%) |
| GM | G, DM | 2.61 (63.1%) | – | – | 0.41 (−91.5%) | 3.01 (−53.1%) | 2.84 (−43.3%) |
| GM | W, G | 0.31 (−80.6%) | – | – | 0.86 (−82.2%) | 1.17 (−81.8%) | 1.40 (−72.1%) |
| HM | W, DM | 5.83 (264.4%) | – | – | 0.02 (−99.6%) | 5.84 (−9.0%) | 4.66 (−7.0%) |
| HM | G, DM | * | – | – | * | * | * |
| HM | W, G | * | – | – | * | * | * |
The deviation from the 3-L method is indicated in brackets.
Values cannot be calculated.