Bio-inspired sustainable and durable superhydrophobic materials: from nature to market

Ghasemlou, Mehran; Daver, Fügen; Ivanova, Elena P.; Adhikari, Benu

doi:10.1039/c9ta05185f

Cited by 204 publications

(150 citation statements)

References 178 publications

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“…The mechanism of superhydrophobic agents is architecting the surface via functionalized materials so that the spherical form of water droplets is preserved on the surface of the material and thus they could flow on the surface and remove any types of impurities. Different strategies could be used to induce this feature in textiles, like interaction by polymers with low surface energy, increasing the surface roughness and functionalization by nanomaterials (Ghasemlou et al 2019;Lu et al 2015). In this regard, Chen et al 2019 fabricated a superhydrophobic cotton textile with self-cleaning and heat resistance abilities.…”

Section: Self-cleaning Textilesmentioning

confidence: 99%

Functionalization of polymers and nanomaterials for water treatment, food packaging, textile and biomedical applications: a review

et al. 2020

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The inert nature of most commercial polymers and nanomaterials results in limitations of applications in various industrial fields. This can be solved by surface modifications to improve physicochemical and biological properties, such as adhesion, printability, wetting and biocompatibility. Polymer functionalization allows to graft specific moieties and conjugate molecules that improve material performances. In the last decades, several approaches have been designed in the industry and academia to graft functional groups on surfaces. Here, we review surface decoration of polymers and nanomaterials, with focus on major industrial applications in the medical field, textile industry, water treatment and food packaging. We discuss the advantages and challenges of polymer functionalization. More knowledge is needed on the biology behind cell–polymer interactions, nanosafety and manufacturing at the industrial scale.

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Section: Self-cleaning Textilesmentioning

confidence: 99%

Functionalization of polymers and nanomaterials for water treatment, food packaging, textile and biomedical applications: a review

et al. 2020

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“…Various surface treatment processes that allow to modify the physical and/or chemical nature of textiles and fibers contribute to the revolution in advanced materials 1 . These processes include surface coating by application of polymers, hydrogels, and sol‐gels, 2,3 or surface modifications by treatments with gas plasma, corona discharge, roughening, hydrosilylation, and the technology of direct laser writing 1,3–6 . Apart from the mentioned methodologies, nature has suggested novel ideas for developing surface modification techniques on artificial models, in this case, for developing biomimetic fibers with superior surface functions.…”

Section: Introductionmentioning

confidence: 99%

“…Apart from the mentioned methodologies, nature has suggested novel ideas for developing surface modification techniques on artificial models, in this case, for developing biomimetic fibers with superior surface functions. Functional structures of living systems, for example, beetle back, 6–9 cactus spine, 2,9–11 and spider‐silk 8,9,12–15 with highly tuned wettability 4 have drawn increasing attention during the past decades. Among the most commonly developed biomimetic fibers exhibiting wettability functionality, spindle‐knotted structured fibers that are bio‐inspired by spider web silk have been devised in a wide spectrum 8,9,12–14 …”

Section: Introductionmentioning

confidence: 99%

A novel method for measuring dynamic contact angles of fibers with spindle‐knots

Aliabadi

Konrad

Stegmaier

et al. 2021

J of Applied Polymer Sci

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The determination of the dynamic contact angle is of significant interest for the characterization of the wettability of technical fibers and textiles in diverse fields of science and technology. There exist traditional methods for dynamic contact angle measurements of flat surfaces and of fibers with a uniform cross‐sectional shape along the fiber. So far, however, no method has been reported which is suitable for structured fibers, particularly for spindle‐knotted structured fibers of varying cross‐sections. This article describes a new method for measuring the dynamic contact angle for polydimethylsiloxane (PDMS) spindle‐knotted structured fibers. The method is an outcome of integrating the results obtained from experiments (applying force tensiometry) and a proposed theoretical model describing such fibers. The reliability and conformity of the results are shown by comparing the measured dynamic contacts angle of PDMS as spindle‐knot and as a flat surface. This method may pave the road for better wettability analysis of various structured fibers. It also allows to measure the local receding and advancing contact angles for macroscopic/microscopic structured fibers (especially when they are not accessible as flat surfaces) against the various test liquids.

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“…Natural SHSs have been observed in some plant leaves and insect wings. Several studies have been focused towards the fabrication of synthetic superhydrophobic surfaces capable of mimicking the natural SHSs [ 21 , 22 , 23 , 24 , 25 , 26 ]. A promising method to produce silicon superhydrophobic surfaces is the use of porous silicon.…”

Section: Introductionmentioning

confidence: 99%

Hydrophobic/Oleophilic Structures Based on MacroPorous Silicon: Effect of Topography and Fluoroalkyl Silane Functionalization on Wettability

Formentı́n

Marsal

2021

Nanomaterials

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The effect of the morphology and chemical composition of a surface on the wettability of porous silicon structures is analyzed in the present work. Hydrophobic and superhydrophobic macroporous substrates are attractive for different potential applications. Herein, different hydrophobic macroporous silicon structures were fabricated by the chemical etching of p-type silicon wafers in a solution based on hydrofluoric acid and coated with a fluoro silane self-assembled monolayer. The surface morphology of the final substrate was characterized using a scanning electron microscope. The wettability was assessed from contact angle measurements using water and organic solvents that present low surface energy. The experimental data were compared with the classical wetting states theoretical models described in the literature. Perfluoro-silane functionalized macroporous silicon surfaces presented systematically higher contact angles than untreated silicon substrates. The influence of porosity on the surface wettability of macoporous silicon structures has been established. These results suggest that the combination of etching conditions with a surface chemistry modification could lead to hydrophobic/oleophilic or superhydrophobic/oleophobic structures.

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Bio-inspired sustainable and durable superhydrophobic materials: from nature to market

Abstract: This review attempts to highlight the recent progress in the design, synthesis and fabrication of fluorine-free superhydrophobic surfaces.

Cited by 204 publications

References 178 publications

Functionalization of polymers and nanomaterials for water treatment, food packaging, textile and biomedical applications: a review

Functionalization of polymers and nanomaterials for water treatment, food packaging, textile and biomedical applications: a review

A novel method for measuring dynamic contact angles of fibers with spindle‐knots

Hydrophobic/Oleophilic Structures Based on MacroPorous Silicon: Effect of Topography and Fluoroalkyl Silane Functionalization on Wettability

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