Issue 46, 2019

A novel dual-layer approach towards omniphobic polyurethane coatings

Abstract

Omniphobic surfaces have a plethora of applications ranging from household paints to sensors. The predominant practice of fabricating those materials/surfaces is to use fluorinated materials which are environmentally harmful, and thus have limited practical applications. In this study, we report a novel dual-layer approach of fabrication towards omniphobic surfaces using polyurethane (PU) as a matrix and polydimethylsiloxane (PDMS) as a self-cleaning ingredient. This approach was also used to produce omniphobic PU nanocomposites, where nanofillers (e.g., nanoclay, cellulose nanocrystals (CNCs) and graphene oxide (GO)) were incorporated. The resultant coatings were investigated for their performance, such as optical clarity, durability, and self-cleaning properties. In addition, scanning electron microscopy (SEM) was used for microstructural analysis of the obtained coatings. The facile nature of fabrication and the use of PDMS, an environmentally benign material relative to fluorinated chemicals, thus offer an eco-friendly sustainable scheme for practical applications aimed at omniphobic purposes.

Graphical abstract: A novel dual-layer approach towards omniphobic polyurethane coatings

Supplementary files

Article information

Article type
Paper
Submitted
30 jun. 2019
Accepted
25 jul. 2019
First published
27 ago. 2019
This article is Open Access
Creative Commons BY license

RSC Adv., 2019,9, 26703-26711

A novel dual-layer approach towards omniphobic polyurethane coatings

F. Khan, A. Khan, M. O. Tuhin, M. Rabnawaz, Z. Li and M. Naveed, RSC Adv., 2019, 9, 26703 DOI: 10.1039/C9RA04923A

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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