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Lookup NU author(s): Dr Peng Liu, Professor David XieORCiD
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
While superhydrophobic coatings have been widely used for surface modification and protection, most suffer from relatively short service life due to the lack of self-healing mechanisms. Herein, a new self-healable coating formulation based on waterborne organic silicone polyurethane has been proposed by integrating disulfide groups into polyurethane molecules. The bulk polyurethane material with disulfide groups shows high self-healing efficiency of up to 90.8%. The polyurethane coating on cotton fabric showed high superhydrophobic performance even after severe damage. Furthermore, the coating showed excellent self-healing ability. The damaged surface could self-heal after heating at 80 °C for half an hour. The coating also exhibited excellent superhydrophobicity and extremely high oil/water-separation efficiency, even after experiencing 80 washes or being worn 800 times. The combination of superior self-healing ability and superhydrophobic properties of the waterborne organic silicone polyurethane coating provides a general approach for the long-term application of such coatings in harsh environments.
Author(s): Mao T, Feng H, Wu J, Li M, Luo S, Chen J, Wei X, Liu P, Xie F
Publication type: Article
Publication status: Published
Journal: Sustainable Materials and Technologies
Year: 2023
Volume: 36
Print publication date: 01/07/2023
Online publication date: 16/05/2023
Acceptance date: 12/05/2023
Date deposited: 25/05/2023
ISSN (print): 2214-9929
ISSN (electronic): 2214-9937
Publisher: Elsevier BV
URL: https://doi.org/10.1016/j.susmat.2023.e00631
DOI: 10.1016/j.susmat.2023.e00631
Notes: Gold OA publication
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