Durable superoleophobic fabric surfaces with counterintuitive superwettability for polar solvents

Pan, Shuaijun; Guo, Rui; Xu, Weijian

doi:10.1002/aic.14517

Cited by 66 publications

(48 citation statements)

References 29 publications

(33 reference statements)

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“…Generally, surfaces with extreme wetting properties, such as superhydrophobic, superhydrophilic, superoleophobic, and superoleophilic surface have been found wide research interests due to their promising applications [13][14][15][16]. Also, surfaces own special wettability, such as superhydrophobic and superoleophilic surfaces, have been arousing inclusive interests due to their looked-for and on-demand applications in oil-water separation [17,18].…”

Section: Introductionmentioning

confidence: 99%

Special wettable nanostructured copper mesh achieved by a facile hot water treatment process

Saadi

Hassan

Brozak

et al. 2017

Mater. Res. Express

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ABSTRACT:In this research, special wettable copper mesh owing superhydrophobicity and superoleophilicity property is reported using a low-cost, eco-friendly, rapid, and scalable synthesis methods. Hot water treatment (HWT) method is used to integrate the micro-textured copper mesh surface with a nanoscale roughness to achieve hierarchical micro-nano structured surface. The surface energy of the nanoscale In addition, the effect of the mesh's geometry on the wetting property was examined through correlations between wire diameter, pore size, and optimal values for the highest water CA.

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Section: Introductionmentioning

confidence: 99%

Special wettable nanostructured copper mesh achieved by a facile hot water treatment process

Saadi

Hassan

Brozak

et al. 2017

Mater. Res. Express

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“…[1][2][3][4][5][6][7][8] Superhydrophobicity was rst observed by Ollivier in 1907 but received limited attention until 1997, with the publication of the existence of the "lotus effect" in nature. 9 One of the most widely accepted theories on surface wettability was published in 1805 by Young, 10 which denes the relationship between water contact angle and surface energy on smooth and chemically homogeneous surfaces, whilst the Wenzel 11 and Cassie-Baxter 12 models consider the surface roughness effects on water repellence.…”

Section: Introductionmentioning

confidence: 99%

“…(1) Polymeric surfaces with designed micro/nano structure; 3,4 (2) Inorganic or textile rough surfaces modied by low surface energy materials, such as hydrocarbons, silicones, uorocarbons; 2,[5][6][7] (3) Inorganic surfaces with hierarchical surface roughness. 13,14 Currently, most coatings developed belong to the rst two types, e.g.…”

Section: Introductionmentioning

confidence: 99%

Wettability of hierarchically-textured ceramic coatings produced by suspension HVOF spraying

et al. 2015

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A novel but simple path for the preparation of superhydrophobic and superhydrophilic coatings has been demonstrated via a recently developed technology, namely suspension high velocity oxy-fuel spraying.Potential uses for robust superhydrophobic coatings include antifouling applications such as aeroplane wings, ship hulls, offshore wind turbine blades, or the above-deck structures on ice breaker vessels.Several fabrication techniques have been reported for preparing inorganic superhydrophobic surfaces, but existing coatings either lack the necessary robustness for engineering applications and/or their deposition methods are not suitable for industrial scale-up. In this work, the industrially established HVOF coating process was adapted to use a liquid suspension of commercially available nano-particles (titania-TiO 2 , and hexagonal boron nitride-h-BN) as feedstock to produce nanostructured suspension HVOF TiO 2 /h-BN coatings for the first time on stainless steel. Results indicate that agglomerates in the nano-feedstock can be dispersed by h-BN due to poor mutual wettability between h-BN and molten TiO 2 . It also inhibits the anatase-to-rutile transformation of TiO 2 during coating deposition by inhibiting sintering of TiO 2 in the HVOF flame. The resultant coating becomes superhydrophobic when the addition of h-BN reaches 10 wt% due to the presence of hierarchical nano-texture on the surface. The superhydrophobicity (contact angle of 163-170 ) is maintained over a long period of time (>13 months, test still ongoing) and remains stable after exposure to light and tape test. A potential route for industrial preparation of robust water-repellent coatings is therefore highlighted by the study.

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“…Future studies that incorporate the proposed tool with such systems will improve the accuracy of experimental findings in these fields. Examples for such fields include processes such as Marangoni flows where controlling the vapors of the volatile component is essential [50], for system that require careful drying as in the case of phospholipid films [51], or for systems that consider solid liquid interactions in which the humidity needs to be controlled as in concrete-water interactions [52] or interactions of water with hydrophobic microstructures [53], or any other system that consider small volumes of volatile components [33,[54][55][56][57][58][59][60][61][62][63]. …”

Section: Discussionmentioning

confidence: 99%

Controlling arbitrary humidity without convection

Wasnik

N’guessan

Tadmor

2015

Journal of Colloid and Interface Science

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In this paper we show a way that allows for the first time to induce arbitrary humidity of desired value for systems without convective flow. To enable this novelty we utilize a semi-closed environment in which evaporation is not completely suppressed. In this case, the evaporation rate is determined both by the outer (open) humidity and by the inner (semi-closed) geometry including the size/shape of the evaporating medium and the size/shape of the semi-closure. We show how such systems can be used to induce desired humidity conditions. We consider water droplet placed on a solid surface and study its evaporation when it is surrounded by other drops, hereon "satellite" drops and covered by a semi-closed hemisphere. The main drop's evaporation rate is proportional to its height, in agreement with theory. Surprisingly, however, the influence of the satellite drops on the main drop's evaporation suppression is not proportional to the sum of heights of the satellite drops. Instead, it shows proportionality close to the satellite drops' total surface area. The resultant humidity conditions in the semi-closed system can be effectively and accurately induced using different satellite drops combinations.

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Durable superoleophobic fabric surfaces with counterintuitive superwettability for polar solvents

Cited by 66 publications

References 29 publications

Special wettable nanostructured copper mesh achieved by a facile hot water treatment process

Special wettable nanostructured copper mesh achieved by a facile hot water treatment process

Wettability of hierarchically-textured ceramic coatings produced by suspension HVOF spraying

Controlling arbitrary humidity without convection

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