Heale, FL;
Page, K;
Wixey, JS;
Taylor, P;
Parkin, IP;
Carmalt, CJ;
(2018)
Inexpensive and non-toxic water repellent coatings comprising SiO2 nanoparticles and long chain fatty acids.
RSC Advances
, 8
(48)
pp. 27064-27072.
10.1039/c8ra04707c.
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Abstract
Special wettability durable coatings, with average water contact angles exceeding 140°, have been fabricated utilising functionalised hydrophobic-SiO2(H-SiO2) particles embedded in fatty acids. The inexpensive and non-toxic H-SiO2particles imparted delicate lotus leaf inspired hierarchical surface nano-morphologies while the fatty acid modification afforded a suitable drop in surface energy. Comparison studies were carried out to explore the effects of fatty acid chain length and pipette as opposed to spray coating deposition methods on the coatings hydrophobicity. It was determined that the longest chain length fatty acid coatings showed enhanced hydrophobic properties due to their extended hydrophobic alkyl chain. A pipette deposited suspension containing H-SiO2nanoparticles and octadecanoic acid generated a coating with the most favourable average water contact and tilting angles of 142 ± 6° and 16 ± 2° respectively.
| Type: | Article |
|---|---|
| Title: | Inexpensive and non-toxic water repellent coatings comprising SiO2 nanoparticles and long chain fatty acids |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1039/c8ra04707c |
| Publisher version: | http://dx.doi.org/10.1039/c8ra04707c |
| Language: | English |
| Additional information: | © 2018 The Royal Society of Chemistry. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10054967 |
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