Robust superamphiphobic film from electrospun TiO2 nanostructures
Publication Type:Journal Article
Source:ACS Applied Materials and Interfaces, Volume 5, Number 5, p.1527-1532 (2013)
Keywords:Coatings, Contact angle, Contact angle hysteresis, Electrospinning, Fabrication, Glass, Glass substrates, Hysteresis, Nanostructures, Paraffins, Real applications, Self-cleaning coatings, Sintering, Substrates, Super-hydrophilic, superamphiphobicity, Surface contact angle, surface tension, TiO, Titanium dioxide
Rice-shaped TiO2 nanostructures are fabricated by electrospinning for creating a robust superamphiphobic coating on glass substrates. The as-fabricated TiO2 nanostructures (sintered at 500 C) are superhydrophilic in nature which upon silanization turn into superamphiphobic surface with surface contact angle (SCA) values achieved using water (surface tension, γ = 72.1 mN/m) and hexadecane (surface tension, γ = 27.5 mN/m) being 166 and 138.5, respectively. The contact angle hysteresis for the droplet of water and hexadecane are measured to be 2 and 12, respectively. Thus, we have successfully fabricated superior self-cleaning coatings that possess exceptional superamphiphobic property by employing a simple, cost-effective, and scalable technique called electrospinning. Furthermore, the coating showed good mechanical and thermal stability with strong adherence to glass surface, thus revealing the potential for real applications. © 2013 American Chemical Society.
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