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Environmentally-safe and transparent superhydrophobic coatings

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journal contribution
posted on 03.06.2016 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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