Journal ArticleDOI
Biomimetic Superhydrophobic and Highly Oleophobic Cotton Textiles
TLDR
When a perfluoroalkyl chain is introduced to the silica particle surface, the superhydrophobic textile also becomes highly oleophobic, as demonstrated by a static contact angle of 140 degrees and a roll-off angle of 24 degrees for a 15 microL sunflower oil droplet.Abstract:
We report a biomimetic procedure to prepare superhydrophobic cotton textiles. By in situ introducing silica particles to cotton fibers to generate a dual-size surface roughness, followed by hydrophobization with polydimethylsiloxane (PDMS), normally hydrophilic cotton has been easily turned superhydrophobic, which exhibits a static water contact angle of 155° for a 10 μL droplet. The roll-off angle of water droplets depends on the droplet volume, ranging from 7° for a droplet of 50 μL to 20° for a 7 μL droplet. When a perfluoroalkyl chain is introduced to the silica particle surface, the superhydrophobic textile also becomes highly oleophobic, as demonstrated by a static contact angle of 140° and a roll-off angle of 24° for a 15 μL sunflower oil droplet.read more
Citations
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Robust omniphobic surfaces
TL;DR: Four design parameters are proposed that predict the measured contact angles for a liquid droplet on a textured surface, as well as the robustness of the composite interface, based on the properties of the solid surface and the contacting liquid, that allow two different families of re-entrant surfaces to be produced.
Journal ArticleDOI
Applications of Bio‐Inspired Special Wettable Surfaces
Xi Yao,Yanlin Song,Lei Jiang +2 more
TL;DR: This review will present how the bio-inspired wettability has been integrated into traditional materials or devices to improve their performances and to extend their practical applications by developing new functionalities.
Journal ArticleDOI
Superhydrophobic surfaces: From natural to biomimetic to functional
TL;DR: This feature article highlights some of the recent advances in the last four years, including the various smart routes to construct rough surfaces, and a lot of chemical modifications which lead to superhydrophobicity.
Journal ArticleDOI
Polyester Materials with Superwetting Silicone Nanofilaments for Oil/Water Separation and Selective Oil Absorption
Junping Zhang,Stefan Seeger +1 more
TL;DR: In this article, a silicone nanofilament-coated textile is used as a membrane for oil/water separation and as a bag for selective oil absorption from water, which is a very promising material, e.g., for practical oil absorption.
Journal ArticleDOI
A review on self-cleaning coatings
TL;DR: In this paper, the authors summarized the key areas of self-cleaning coatings, primarily focusing on various materials that are widely used in recent research and also in commercial applications.
References
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Journal ArticleDOI
Controlled growth of monodisperse silica spheres in the micron size range
TL;DR: In this article, a system of chemical reactions has been developed which permits the controlled growth of spherical silica particles of uniform size by means of hydrolysis of alkyl silicates and subsequent condensation of silicic acid in alcoholic solutions.
Journal ArticleDOI
Purity of the sacred lotus, or escape from contamination in biological surfaces
TL;DR: It is shown here for the first time that the interdependence between surface roughness, reduced particle adhesion and water repellency is the keystone in the self-cleaning mechanism of many biological surfaces.
Journal ArticleDOI
A modified ninhydrin reagent for the photometric determination of amino acids and related compounds
Stanford Moore,William H. Stein +1 more
TL;DR: A modified ninhydrin reagent for the photometric determination of amino acids and related compounds and its application in drug discovery is described.