Biomimetic Superhydrophobic Cotton Textiles:Fabricated and Surface Analysis

Inspired from the micro/nanoscaled structure of the lotus leaf,we fabricated a superhydrophobic cotton textile with micro/nanoscaled dual-sized roughness surface using silica gol and N-β-aminoethyl-γ-aminopropyl polysiloxane(ASO-1). The contact angle of the modified textile can reach to 160.5°. Field emission scanning electronic microscope (FESEM) photography showed there are many nano-particles on the treated cotton fabric surface. The contact angle analysis indicated the micro-scale roughness of the textile itself and the hydrophobic films of ASO-1 are the reasons why cotton fabric changed from hydrophilicity to hydrophobicity. Nano-particles formed by silica sol can decrease the contact area between water and textile surface,increasing the contact angle and water-repellent ability. As a result the superhydrophobic textile was fabricated. Finally,the chemical composition of the superhydrophobic cotton textile surface was confirmed by X-ray photoelectron spectroscopy (XPS).