Abstract
Investigations of zeta-potential changes of initial and thermally treated controlled-porosity glasses (CPGs), whose surfaces were covered with different amounts of n-octane and/or nitromethane, are presented. The dispersive (γ ds ) and non-dispersive (γ ns ) components of the surface free energy were then calculated using the relationships obtained. γ ds was found to be practically independent of the treatment time (a small increase in the range of 4 mJ m−2 can be seen), but a considerable decrease in γ ns was observed (from 76.95 to 27.2 4 mJ m−2). In the case of CPG modified with γ-aminopropyltriethoxysilane an increased hydrophobic character of the surface was found. This was reflected in increased γ ds and decreased γ ns values.
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Hołysz, L., Dawidowicz, A.L., Chibowski, E. et al. Influence of surface modification of porous glasses on their surface free energy. J Mater Sci 26, 4344–4350 (1991). https://doi.org/10.1007/BF00543649
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DOI: https://doi.org/10.1007/BF00543649