Determination of surface free energy components of organic liquids by the thin layer wicking method

Using the layer wicking method (TLW method) the electron-donor interactions of surface free energy of the organic liquids: benzene (C₆H₆), toluene C₆H₅CH₃), and tetrahydrofuran ((CH₂)₄O) was determined. For this purpose the penetration rate measurements of these liquids in the porous layers of silica gel and alumina were performed. The obtained values of the electron-donor parameter of surface free energy of the studied organic liquids were compared with the literature data obtained by the direct measurement of the interface tensions of water/organic liquids.