Syafiq, A. and Pandey, A.K. and Balakrishnan, Vengadaesvaran and Shahabuddin, Syed and Abd Rahim, Nasrudin (2024) Organic-inorganic composite nanocoatings with superhydrophobicity and thermal stability. Pigment and Resin Technology, 53 (1). 10 – 16. ISSN 0369-9420, DOI https://doi.org/10.1108/PRT-04-2018-0038.
Full text not available from this repository.Abstract
Purpose: This paper aims to investigate the thermal stability and hydrophobicity of difference alkyl chain of silanes with silicon (Si) micro- and nanoparticles. Design/methodology/approach: Sol-gel methods have been used to design superhydrophobic glass substrates through surface modification by using low-surface-energy Isooctyl trimethoxysilane (ITMS) and Ethyl trimethoxysilane (ETMS) solution. Hierarchical double-rough scale solid surface was built by Si micro- and nanoparticles to enhance the surface roughness. The prepared sol was applied onto glass substrate using dip-coating method and was dried at control temperature of 400°C inside the tube furnace. Findings: The glass substrate achieved the water contact angle as high as 154 ± 2° and 150.4 ± 2° for Si/ITMS and Si/ETMS films, respectively. The Si/ITMS and Si/ETMS also were equipped with low sliding angle as low as 3° and 5°, respectively. The Si micro- and nanoparticles in the coating system have created nanopillars between them, which will suspend the water droplets. Both superhydrophobic coatings have showed good stability against high temperature up to 200°C as there are no changes in WCA shown by both coatings. Si/ITMS film sustains its superhydrophobicity after impacting with further temperature up to 400°C and turns hydrophobic state at 450°C. Research limitations/implications: Findings will be useful to develop superhydrophobic coatings with high thermal stability. Practical implications: Sol method provides a suitable medium for the combination of organic-inorganic network to achieve high hydrophobicity with optimum surface roughness. Originality/value: Application of different alkyl chain groups of silane resin blending with micro- and nanoparticles of Si pigments develops superhydrophobic coatings with high thermal stability. © 2018, Emerald Publishing Limited.
| Item Type: | Article |
|---|---|
| Funders: | Higher Institution Centre of Excellence, MOHE HICOE, UM Power Energy Dedicated Advanced Centre |
| Uncontrolled Keywords: | Coatings; Hierarchical roughness; Organic coatings; Superhydrophobic; Thermal stability |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Deputy Vice Chancellor (Research & Innovation) Office > UM Power Energy Dedicated Advanced Centre |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 30 Apr 2024 02:17 |
| Last Modified: | 30 Apr 2024 02:17 |
| URI: | http://eprints.um.edu.my/id/eprint/44945 |
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