ABSTRACT
As can be seen from Table XVII-1, if one needs to use an apolar liquid to measure the γLW component of a solid surface (using eq. IV-28A), as soon as one deals with solids with γ SLW-values greater than about 28 mJ/m2, the choice, among the alkanes, is rather poor because these are close to the freezing point, at 20°C. In practice, however, there are a few higher-energy liquids which are apolar for all practical purposes (see also Table XVII-10), e.g.: Diiodomethane, for which γ LLW ≈ γL = 50.8 mJ/m2 and γ ≈ 0.01 mJ/m2.
