Evaluation of capillary rise methods for determining wettability of powders

Effect of electrolyte on surface free energy components of feldspar minerals using thin-layer wicking method

“…Also, polishing itself in some cases may distort the atomic rearrangement on the surface as abrasive materials are used for cutting and polishing. For this reason, in recent years numerous methods, e.g., capillary rise, thin layer and column wicking, and heat of immersion methods have been developed to measure contact angles on powdered minerals [3][4][5][6][7][8][9][10]22,24,25].…”

Experimental and modeling study of wettability alteration through seawater injection in limestone: a case study

“…In this technique, the wettability of powders and porous media could be characterized using contact angle measurements in the presence of immiscible liquid/liquid or gas/liquid phases (Dang-Vu and Hupka 2005; Ghedan and Canbaz 2014). Washburn derived an equation for the gas/liquid/rock system to describe the imbibition rate of a liquid into porous media (Dang-Vu and Hupka 2005;Siebold et al 2000;Wolform et al 2002). The mass of the imbibed fluid into porous media can be obtained by the Washburn equation (Washburn 1921):where m is the mass of the imbibed liquid into the porous media, g; ρ is the density of the imbibed fluid, g/cm 3 ; γ LV is the surface tension between liquid and vapor phase, dyne/ cm; θ is the contact angle, °; µ is the viscosity of the imbibed fluid, cP; t is time, s; and C is a constant characterization of the porous medium.…”

Plasma polymerization of sulfur-rich and water-stable coatings on silica particles

“…The capillary constant (C), which is mainly dependent on the porous architecture of the packed bed, was determined using n-Hexane as a probe liquid providing a contact angle of 0° [40,41].…”