Abstract
A series of switchable wettability cotton fabrics were fabricated with inorganic oxide nanoparticles (TiO2 or Al2O3) modification of stearic acid (STA). By adjusting the additive amount of binary of inorganic oxide nanoparticles, five kinds of samples were obtained. These cotton fabrics were fully characterized, and all the samples possessed superhydrophobic surface. Under the UV irradiation, the photoresponsive materials TiO2 could alter the fabrics wetting state, but the STA modified UV inactive Al2O3 nanoparticles could remain the superhydrophobicity of samples. The changed wettability fabrics recovered the superhydrophobicity after heating, and the switchable wettability of the samples was maintained even after several UV irradiation/heating cycles.
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