Tunable superoleophobicity via harnessing the surface chemistry of UV responsive titania coatings.

ABSTRACT: Superoleophobic surfaces exhibiting tunable wettability are prepared by the combination of simple spray coating of Ultra Violet (UV) responsive titania nanoparticles and a low surface energy coating of a self-assembled monolayer (SAM) of 1H,1H,2H,2H-perflurodecyltrichlorosilane (PFDTS). Spray coating creates random micron-sized roughness with reentrant geometry, a necessary requirement for the superoleophobic surface, and a porous network at the nanometer size level, confirmed by the field emission scanning electron microscope (FE-SEM) images. By employing the rough surface and a low surface energy monolayer, the substrates possess superhydrophobicity with a water (γ = 72 mN m^-1) contact angle of 163° and superoleophobicity with a decane (γ<

SUBMITTER: Barman J 

PROVIDER: S-EPMC9079761 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature