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Environmentally-safe and transparent superhydrophobic coatings

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journal contribution
posted on 03.06.2016, 00:00 by Constantine M. Megaridis, D.E. Waldroup, D. Calewarts, J. Qin, S. Guggenheim, A. Vera, R. Ibrahim, J.E. Mates
The bioinspired field of superhydrophobicity has almost universally deployed environmentally-detrimental approaches relying on organic solvents and fluorinated compounds to generate liquid-repellent surfaces, thus severely limiting application at industrial scales. Recent water-borne methods have reduced the use of volatile organic compounds, but these methods often rely on either fluorinated chemistries (to lower surface energy) or charge-stabilization (to suspend roughness-enhancing particle fillers). An entirely water-based and fluorine-free superhydrophobic formulation has been developed from hydrophilic titanium dioxide (TiO2) nanoparticles and polyolefin copolymers, without additional surfactants or charge-stabilization. The commercially-available ingredients are combined in a single-step, substrate-independent, wet-process application to deliver an ultra-simple, semitransparent coating which is attractive for large-area, fluid-barrier surface treatments. The coating constituents are environmentally-safe and FDA-approved, overcoming a nontrivial hurdle in the scalable development of sustainable fluid management technologies

Funding

Kimberly-Clark Corp.

History

Publisher Statement

© 2016 The Royal Society of Chemistry.

Publisher

Royal Society of Chemistry

Language

en_US

issn

1463-9262

Issue date

01/01/2016

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