The total surface free energy (γtot) is divided into a polar component (γP) and a dispersion component (γD), as shown in equation:
γtot = γD + γP
Please, are the following parameters correct for the used in the Young Dupré equation to determine the surface energy?
- distilled water (γP = 50.2 mN/m, γD = 22.6 mN/m),
- glycerol (γP = 26.4 mN/m, γD = 37.0 mN/m), and
- diiodomethane (γP = 0.0 mN/m, γD = 50.8 mN/m).
if so, are they constant ?.
Dear Dr. Noubeil Guermat ,
I suggest you to have a look at the following, interesting note:
- Two-Component Surface Energy Characterization as a Predictor of Wettability and Dispersability
Application report By KRUSS
Available at: https://www.kruss-scientific.com/fileadmin/user_upload/website/literature/kruss-ar213-en.pdf
Where you can find in the part “Characterization of liquids” an interesting table containing the data that you cited for more liquids, with the different values of Surface Tension (constant, at Room Temperature).
Best regards. Pierluigi Traverso
Dear Dr. Noubeil.
I don't usually use Glycerol in contact angle. So, I don't know the parameters for Glycerol. For ultrapure water and di-iodomethane, I use the following parameters:
Ultrapure water: yP = 51.72 and yD= 21.08
Di-iodomethane: yP= 2.30 and yD= 48,50
Best Regards
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