Superhydrophobic cotton fabrics prepared by sol–gel coating of TiO₂and surface hydrophobization

Abstract

By coating fibers with titania sol to generate a dual-size surface roughness, followed by hydrophobization with stearic acid, 1H, 1H, 2H, 2H -perfluorodecyltrichlorosilane or their combination, hydrophilic cotton fabrics were made superhydrophobic. The surface wettability and topology of cotton fabrics were studied by contact angle measurement and scanning electron microscopy. The UV-shielding property of the treated fabrics was also characterized by UV-vis spectrophotometry.

Large-area fabrication of superhydrophobic surfaces for practical applications: an overview

“…We [43] prepared superhydrophobic cotton fabrics by sol-gel coating of TiO 2 and surface hydrophobization. The superhydrophobicity of the resulting fabrics depended on the roughness caused by the sol-gel coating rather than the concentration of TiO 2 .…”

“…Hence, the development of nonfluorinated modifying agents or a decrease in their use is very important for the fabrication of environmentally friendly coatings. For this purpose, we [14,16,43] used stearic acid to modify TiO 2 particles or silica particles on roughened cotton textiles to make the textiles superhydrophobic.…”

“…Thus, we [43] produced superhydrophobic textiles with a UV-shielding property through incorporation of TiO 2 particles by titania sol coating. Tomšič et al [72] prepared water and oil repelling and antimicrobial finishes for cotton fibers from a commercially available fluoroalkylfunctional water-borne siloxane, nanosize silver particles and a reactive organic-inorganic binder.…”

Flame retardant and hydrophobic cotton fabrics from intumescent coatings

“…In general, the chemical composition and geometrical microstructure determine the wettability of a solid surface [24][25][26]. Micro-or nano-sized silica particles have been widely used for enhancing surface roughness to achieve superhydrophobicity [27][28][29], while the sol-gel process is one of the most common approaches to generate superhydrophobicity [30][31][32].…”

Stain Resistance of Cotton Fabrics before and after Finishing with Admicellar Polymerization

“…Sol-gel methods have been successfully employed to impart oil/water repellency and anti-bacterial capability to cotton using fluorocarbon polymer/SiO 2 and silver nanoparticle-doped silica hybrid materials, respectively [9,10]. Lastly, nanoparticles of fluorochemical coated silica and of gold have been applied to cotton and other fabrics to create a chemically inert fiber surface with superlyophobic properties [11][12][13][14][15][16]. This broad range of approaches reflects the interest and challenges in this area.…”