Superhydrophobic Hexadecyltrimethoxysilane-Modified Fumed Silica Nanostructure/Poly(butyl methacrylate) Composite Thin Films via Aerosol-Assisted Deposition: Implications for Self-Cleaning Surfaces

Journal article


Huo, J., De Leon Reyes, C., Kalmoni, J.J., Park, S., Hwang, G., Sathasivam, S. and Carmalt, C. (2023). Superhydrophobic Hexadecyltrimethoxysilane-Modified Fumed Silica Nanostructure/Poly(butyl methacrylate) Composite Thin Films via Aerosol-Assisted Deposition: Implications for Self-Cleaning Surfaces. ACS Applied Nano Materials. https://doi.org/10.1021/acsanm.3c02575
AuthorsHuo, J., De Leon Reyes, C., Kalmoni, J.J., Park, S., Hwang, G., Sathasivam, S. and Carmalt, C.
Abstract

Superhydrophobic coatings with their unique nanostructured surface properties have application in many industrially important technologies but are currently dominated by environmentally problematic fluorinated compounds. Here, we demonstrate the fabrication of fluorocarbon-free superhydrophobic coatings consisting of poly(butyl methacrylate) (PBMA) and nanostructured hexadecyltrimethoxysilane (HDTMS)-functionalized fumed SiO2/PBMA as self-cleaning surfaces via a facile ambient pressure aerosol deposition route. X-ray photoelectron and infrared spectroscopy measurements showed successful composite formation. The deposition temperature and HDTMS-SiO2:PBMA ratio was optimized to give films that had a water contact angle as high as 161 ± 1° and a sliding angle of 1°, owing to a hierarchical surface nano- and microstructure and a root-mean-square surface roughness of 592 nm. This work shows a high-throughput single-step route to environmentally friendly PBMA-based superhydrophobic coatings.

KeywordsGeneral Materials Science
Year2023
JournalACS Applied Nano Materials
PublisherAmerican Chemical Society (ACS)
ISSN2574-0970
Digital Object Identifier (DOI)https://doi.org/10.1021/acsanm.3c02575
Funder/ClientLondon South Bank University
Publication dates
Online31 Aug 2023
Publication process dates
Accepted18 Aug 2023
Deposited15 Sep 2023
Accepted author manuscript
License
File Access Level
Open
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PBMA Manuscript (Carmalt et al).docx
License: CC BY 4.0
File access level: Open

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