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Organic superhydrophobic coatings with mechanical and chemical robustness

Published online by Cambridge University Press:  06 May 2020

Sajia Afrin ,
David Fox  and
Lei Zhai Open the ORCID record for Lei Zhai [Opens in a new window]
Sajia Afrin
Affiliation:
NanoScience Technology Center, University of Central Florida, Orlando, FL, USA Department of Chemistry, University of Central Florida, Orlando, FL, USA
David Fox
Affiliation:
NanoScience Technology Center, University of Central Florida, Orlando, FL, USA Department of Chemistry, University of Central Florida, Orlando, FL, USA
Lei Zhai*
Affiliation:
NanoScience Technology Center, University of Central Florida, Orlando, FL, USA Department of Chemistry, University of Central Florida, Orlando, FL, USA Department of Materials Science and Engineering, University of Central Florida, Orlando, FL, USA
*
Address all correspondence to Lei Zhai at lzhai@ucf.edu
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Abstract

Stable superhydrophobic coatings were produced from aqueous suspensions of epoxy nanoparticles. The superhydrophobic coatings demonstrated excellent mechanical robustness and chemical resistance. Aqueous solutions of ionic surfactants, nonionic surfactants, and small organic molecules on superhydrophobic coatings could wet the superhydrophobic coatings. However, the superhydrophobicity can be recovered by rinsing the wet surface with water. It was also discovered that, although seemed wetted, the superhydrophobic surface was separated from the solution of ionic surfactant by a layer of ionic surfactant molecules. In contrast, nonionic and small organic molecules could not aggregate on the superhydrophobic surfaces; the coatings were exposed to the solutions.

Type
Research Letters
Information
MRS Communications , Volume 10 , Issue 2 , June 2020 , pp. 346 - 352
Copyright
Copyright © Materials Research Society, 2020

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