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Title: Co-solvent induced self-roughness superhydrophobic coatings with self-healing property for versatile oil-water separation
Authors: Gao, Shouwei
Dong, Xiuli
Huang, Jianying
Dong, Jianing
Cheng, Yan
Chen, Zhong
Lai, Yuekun
Keywords: Engineering::Materials
Issue Date: 2018
Source: Gao, S., Dong, X., Huang, J., Dong, J., Cheng, Y., Chen, Z., & Lai, Y. (2018). Co-solvent induced self-roughness superhydrophobic coatings with self-healing property for versatile oil-water separation. Applied Surface Science, 459, 512-519. doi:10.1016/j.apsusc.2018.08.041
Series/Report no.: Applied Surface Science
Abstract: Despite of the extensive effort made to construct a superhydrophobic surface in labs, achieving a short processing time and via a sustainable production route remains a challenge for practical applications. Here, with tetrahydrofuran and n-hexane as co-solvent, we demonstrate that roughness can be induced on polydimethylsiloxane (PDMS) coatings to achieve superhydrophobic coatings on different types of substrates including woven fabrics, non-woven fabrics, and melamine sponge. The sample constructed without adding particles exhibited excellent performance for versatile oil-water separation of mixtures of heavy oil and water, light oil and water, as well as oil-water emulsion. Due to the good solubility of the PDMS in the co-solvent, the dipping solution exhibited a long-time stability. Moreover, the abundant CH3 provided by the self-roughness PDMS coating helped the substrates recover its superhydrophobic property even after destroyed by plasma for 10 times. We believe that this extremely easy dipping-curing method would open up a new direction for fabricating a series of self-roughed superhydrophobic surface with self-healing property. Besides, the developed strategy is fast and easily scalable for industrial applications.
ISSN: 0169-4332
DOI: 10.1016/j.apsusc.2018.08.041
Schools: School of Materials Science & Engineering 
Rights: © 2018 Elsevier B.V. All rights reserved. This paper was published in Applied Surface Science and is made available with permission of Elsevier B.V.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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