TY - JOUR
T1 - Adhesion of humic acids to nonreactive surfaces: effect on surface free energy and wetability of glass
AU - Józefaciuk, Grzegorz
AU - Hajnos, Mieczysław
AU - Sokołowska, Zofia
AU - Stawiński, Janusz
AU - Polubesova, T.
AU - Ponizovski, A.
PY - 1993
Y1 - 1993
N2 - Contact angles of glycerol and diiodometane were measured on glass surface covered by different amounts of humic acids, extracted from a sandy forest soil. The surface coverages with humic acids, surface free energy components and wetabilities of the obtained mixed surfaces were calculated from contact angle values. The dispersion component of the surface free energy increased and the nondispersion one decreased tending to the values for pure humic acids, what was connected with surface coverage increase. The wetability coefficient decreased with humic acids content increase showing hydrophobic action of humic acids.
AB - Contact angles of glycerol and diiodometane were measured on glass surface covered by different amounts of humic acids, extracted from a sandy forest soil. The surface coverages with humic acids, surface free energy components and wetabilities of the obtained mixed surfaces were calculated from contact angle values. The dispersion component of the surface free energy increased and the nondispersion one decreased tending to the values for pure humic acids, what was connected with surface coverage increase. The wetability coefficient decreased with humic acids content increase showing hydrophobic action of humic acids.
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SN - 0236-8722
VL - 7
SP - 235
EP - 239
JO - International Agrophysics
JF - International Agrophysics
IS - 4
ER -