Abstract
We employed a quick method of supercritical fluid processing (SCF) to develop superhydrophobic composite coatings by combining h-boron nitride (h-BN) and multiwalled carbon nanotubes (MWCNT) to create hierarchical nanostructures on fiber-reinforced polymer (FRP) sheets. The prepared BN-MWCNT composite coating demonstrated a high-water contact angle of 169.4°. At high magnification, the surface morphologies of the composite coatings revealed that MWCNT was completely covered by BN nanosheets in all directions. The presence of aligned nano- and microsurface roughness in the coating was investigated using an atomic force microscope (AFM). X-ray diffraction (XRD) study revealed that h-BN nanosheets had a marked effect on the phase separation of MWCNT. The remarkable structural stability of the obtained BN-MWCNT superhydrophobic composite coating was validated by Raman spectroscopy. This study found a cost-effective method to create BN-MWCNT composites by applying the SCF approach.
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Acknowledgments
The authors express their gratitude to Professor Balakumar Pitchai, Director, CSSTP at the Office of Research and Development of the Periyar Maniammai Institute of Science & Technology (Deemed to be University), India for his editorial advice on this manuscript.
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Rajiv, S., Shanmugam, K. Robust superhydrophobic composite coating using h-BN/MWCNT via supercritical fluid processing. J Coat Technol Res 20, 2135–2141 (2023). https://doi.org/10.1007/s11998-023-00816-0
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DOI: https://doi.org/10.1007/s11998-023-00816-0