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Wednesday, 18 September 2019
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Raw materials & technologies, Applications

Synthesis and characterisation of superhydrophobic-superoleophilic surface

Thursday, 7 April 2016

Researchers have successfully achieved a binary superhydrophobic-superhydrophilic surface by a combination of nanoscale texture roughness on micro-textured cotton thread network by layer-by-layer deposition method through the single-step sol-gel route.

Applications of this technology include self-cleaning, antistaining and antiwetting fabrics for military applications. Source: gunnar3000/Fotolia.com

Applications of this technology include self-cleaning, antistaining and antiwetting fabrics for military applications. Source: gunnar3000/Fotolia.com

Furthermore, they produced microstructures with improved wettability, in which silica nanotextures were grown without modifying the chemical method to form superoleophilic and superhydrophobic networks.

Applications include self-cleaning fabrics

A superoleophilic surface (oil contact angle 0°) and a superhydrophobic coated cotton fabric with surface free energy of γtotal = 13. 23 ± 0.37 mJ m−2 (water contact angle of 167 ± 1° and a small sliding angle of 4 ± 1°) were successfully obtained. The results were exemplified by the creation of immiscible oils separation membranes, and the innumerable applications of this technology also include self-cleaning fabrics, antistaining fabrics, water purification, and antiwetting fabrics for military applications.

The study is published in: Journal of Sol-Gel Science and Technology, June 2016, Volume 78, Issue 3, pp 475-481.

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