Table 5.
Contact-angle measurements for water, glycerol, and diiodomethane on oriented <0.2 μm clay films. The surface tension values for these liquids are listed in van Oss (1994). The contact angles have a standard deviation of approximately 2°. Solution of the simultaneous Young-Dupré equations yields the surface tension values (as mJ/m2) in the lower part of the table (+: electron acceptor; −: electron donor; Giese and van Oss, 2002)
| CsArO2 | CsAgO2 | |
|---|---|---|
| Water | 2 | 10 |
| Glycerol | 22 | 7 |
| Diiodomethane | 30 | 34 |
| γLW | 42.5 | 44.2 |
| γ+ | 2.8 | 1.4 |
| γ− | 43.7 | 50.4 |