ISSN 0862-5468 (Print), ISSN 1804-5847 (online) 

Ceramics-Silikáty 65, (3) 239 - 246 (2021)

Papučová Iveta 1, Pagáčová Jana 1, Plško Alfonz 2,Faturíková Katarína 2
1 Alexander Dubček University of Trenčín, Faculty of Industrial Technologies, I. Krasku 491/30, 020 01 Púchov, Slovak Republic
2 FunGlass – Centre for Functional and Surface Functionalized Glass, Alexander Dubček University of Trenčín, Študentská 2, 911 50 Trenčín, Slovak Republic

Keywords: Sol-gel, Inorganic-organic films, Morphology, Hydrophobicity, Surface free energy, Temperature dependence

The paper deals with the treatment temperature influence of inorganic-organic films on their surface properties. Inorganic-organic films were prepared by sol-gel method in “tetraethoxysilane - triethoxy(octyl)silane - water - nitric acid - isopropyl alcohol“ system, and they were treated at temperatures of 140, 160, 180, 200 and 220 °C. The atomic force microscopy and sessile drop technique were used for characterization of film surface. The morphology, rms-roughness, and surface wettability (hydrophobicity) were evaluated. Surface free energy and its polar and dispersion component were calculated by Owens-Wendt-Rabel-Kaelble (OWRK) method, using contact angles of water and diiodomethane. On the basis of results of all studied properties, the films can be divided into two groups. The first group is represented by films prepared at temperatures of 140, 160 and 180 °C because there is the evaporation of present solvents. The second group is represented by films prepared at temperatures of 200 and 220 °C because the degradation processes of inorganic-organic components are in progress in films.

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doi: 10.13168/cs.2021.0024
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