Highly Durable Superhydrophobic Polydimethylsiloxane/Silica Nanocomposite Surfaces with Good Self-Cleaning Ability

ACS Omega
Xiao Gong, Shuang He

Abstract

In this work, we report that superhydrophobic coatings can be prepared by a simple spray-coating technique using readily available materials such as polydimethylsiloxane (PDMS) and hydrophilic and hydrophobic SiO2 nanoparticles. PDMS can combine with the two kinds of SiO2 nanoparticles to form a rough structure, which results in superhydrophobicity of the coatings. The prepared superhydrophobic coating has a water contact angle of 156.4° and a sliding angle of less than 5°. Moreover, the coatings can be applied to various substrates such as glass, paper, and plastic. In addition, the coatings show excellent stability and still remain superhydrophobic after ultraviolet radiation, sand abrasion and water impact, tape peeling, and treatment with a strong alkali/acid solution. Furthermore, the superhydrophobic surfaces are proven to be suitable for antifouling and self-cleaning.

References

Sep 14, 2012·Nature·Ivan U VakarelskiSigurdur T Thoroddsen
Jun 20, 2014·Chemical Communications : Chem Comm·Daewha HongWoo Kyung Cho
Dec 15, 2015·Journal of the American Chemical Society·Bin SuLei Jiang
Aug 5, 2018·Journal of Colloid and Interface Science·Wenjing MaChaobo Huang
Jun 12, 2019·Chemical Communications : Chem Comm·Wenwen MaXiao Gong
Jun 14, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Junyan PengXiao Gong
Nov 9, 2019·Soft Matter·Lingqi Zhong, Xiao Gong
Feb 7, 2019·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Shuting GaoChaobo Huang

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Citations

Apr 24, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Sumaira YasmeenHan-Bo-Ram Lee
Nov 5, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Norbert J JanowiczClaire J Carmalt

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Methods Mentioned

BETA
light scattering
scanning electron microscopy

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