ESTIMATION OF THE POLAR SURFACE TENSION PARAMETERS OF GLYCEROL AND FORMAMIDE, FOR USE IN CONTACT ANGLE MEASUREMENTS ON POLAR SOLIDS
- 1 February 1990
- journal article
- research article
- Published by Taylor & Francis in Journal of Dispersion Science and Technology
- Vol. 11 (1) , 75-81
- https://doi.org/10.1080/01932699008943237
Abstract
By measuring contact angles with water, glycerol and formamide on a number of polar surfaces, an estimate could be made of the electron-acceptor (γ+ ) and the electron-donor (γ− ) parameters of glycerol (G) and formamide (F), relative to the parameters of. water (W), for which a reference value of γ+ W = γ− W = 25.5 mJ/m2 has been assumed. The values thus found are: γ+ G ≈ 3.92 mJ/m2 (which yields γ− G ≈ 57.4 mJ/m2) and γ+ F ≈2.28 mJ/m2 (which yields γ− F ≈ 39.6 mJ/m2).Keywords
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