Superhydrophobic and low-hysteresis coating based on rubber-modified TiO2/SiO2 nanoparticles

In this article, the wettability of a superhydrophobic layer from rubber-modified TiO2/SiO2 nanocomposite is studied. The nanocomposites were prepared with various ratios TiO2 and SiO2 nanoparticles (NPs) then studied effect annealing, UV irradiation aging after coating on substrate. Results show that average contact angle deionized water droplets most hydrophobic 129.5°, which increases up to 151.0° by irradiation. addition, lowest surface energy layers was measured as 29.61 mJ m–2. hydrophobicity investigated annealing (at temperatures 300°C), results maximum about 150°. dynamics rapid imaging, no hysteresis for wetting. Fourier transform infrared spectroscopy shows causes formation C–H functional groups without considerable change in hydrophobicity, while process has significant effects groups. morphology coatings scanning electron microscopy, reveal roughness surfaces due radiation. minimum increase coefficient estimated 73% initial value agreement atomic force microscopy results.