Liquid-Repellent Surfaces

Wang, Ting; Wang, Zuankai

doi:10.1021/acs.langmuir.2c01533

Cited by 22 publications

(21 citation statements)

References 128 publications

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“…This is because the surface of the coating becomes rougher when the C APT is 10.0 g L –1 (Figures c and S2b) compared with that with 5.0 g L –1 C APT (Figures b and S2a). This means the roughness of the coating is enhanced and a two-tier micro-/nanostructure is formed, which helps trap more air and reduce the coating-water contact area at the interface . Consequently, STA@APT coating with a C APT of 10.0 g L –1 exhibits higher superhydrophobicity.…”

Section: Resultsmentioning

confidence: 99%

“…This means the roughness of the coating is enhanced and a two-tier micro-/nanostructure is formed, 43 which helps trap more air and reduce the coatingwater contact area at the interface. 44 Consequently, STA@APT coating with a C APT of 10.0 g L −1 exhibits higher superhydrophobicity. With continuously increasing C APT to 15.0 g L −1 , the SA increases obviously, and the coating becomes distinctly rough (Figures 4d and S2c).…”

Section: ■ Introductionmentioning

confidence: 98%

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Preparation of Food Grade Superhydrophobic Coatings Based on Attapulgite Nanorods

Dong

Ding

Wei

et al. 2023

ACS Sustainable Chem. Eng.

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The superhydrophobic coating is a promising strategy to avoid liquid foods adhesion on the packages and thus significantly reduce their waste and environmental pollution. However, food-grade superhydrophobic coatings are yet limited, especially those with excellent performances. Herein, we report the preparation of food-grade superhydrophobic coatings by the combination of attapulgite (APT) natural nanorods, stearic acid (STA), and hydroxypropyl distarch phosphate (HDP) adhesive. First, a stock suspension was prepared by an esterification reaction between APT and STA. Then, the edible HDP primer and the STA@APT suspension were sequentially spray-coated onto substrates to form the HDP/STA@APT superhydrophobic coatings. The influences of the STA and APT concentrations on the wettability and morphology of the coatings were studied. Due to the hierarchical structure and low surface energy of the coatings assembled by APT and STA, the coatings show excellent static and dynamic superhydrophobicity and self-cleaning performance. In addition, the coatings exhibit good environmental stability and excellent antiadhesive properties toward various liquid foods and are also applicable to various frequently used food packing materials. Thus, we believe that superhydrophobic coatings have a broad application prospect for food packing.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 98%

Preparation of Food Grade Superhydrophobic Coatings Based on Attapulgite Nanorods

Dong

Ding

Wei

et al. 2023

ACS Sustainable Chem. Eng.

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“…Furthermore, research studies reveal that higher regularity and lower length provide suitable low adhesion properties at the surface, with higher SLIPS stability [ 269 , 281 , 282 ]. Since various biological surfaces have inspired the design of robust, air-resistant surfaces [ 283 ]. The lotus leaves, pitcher plant, and Salvinia are air-infused liquid-repellent surfaces [ 283 ].…”

Section: Biomimetic Surfaces Inspired By Plantsmentioning

confidence: 99%

Tribological Behavior of Bioinspired Surfaces

Шарма

Grewal

2023

Biomimetics

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Energy losses due to various tribological phenomena pose a significant challenge to sustainable development. These energy losses also contribute toward increased emissions of greenhouse gases. Various attempts have been made to reduce energy consumption through the use of various surface engineering solutions. The bioinspired surfaces can provide a sustainable solution to address these tribological challenges by minimizing friction and wear. The current study majorly focuses on the recent advancements in the tribological behavior of bioinspired surfaces and bio-inspired materials. The miniaturization of technological devices has increased the need to understand micro- and nano-scale tribological behavior, which could significantly reduce energy wastage and material degradation. Integrating advanced research methods is crucial in developing new aspects of structures and characteristics of biological materials. Depending upon the interaction of the species with the surrounding, the present study is divided into segments depicting the tribological behavior of the biological surfaces inspired by animals and plants. The mimicking of bio-inspired surfaces resulted in significant noise, friction, and drag reduction, promoting the development of anti-wear and anti-adhesion surfaces. Along with the reduction in friction through the bioinspired surface, a few studies providing evidence for the enhancement in the frictional properties were also depicted.

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“…This allows to decrease the thermal conduction between the surface and the droplet that leads to heterogeneous ice nucleation. [13][14][15][16][17][18][19][20] Coating architectures with hierarchical features both on the micro-and nano-scales have been found to maximize liquid repellency, facilitate droplet roll-off, delay ice nucleation in static water droplets, and, in some cases, reduce ice adhesion strength. [21][22][23][24][25][26][27][28][29][30][31][32][33][34] Chemically modified polymeric anti-icing coatings are often limited in their scalability and can be subject to fouling of the coating or mechanical abrasion, which leads to reduced functionality.…”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic and Anti‐Icing Coatings Made of Hierarchically Nanofibrillated Polymer Colloids

Williams

Roh

Kotb

et al. 2022

Macromol. Rapid Commun.

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The deposition of coatings with hierarchical morphology from hydrophobic and hydrophilic polymers is a common approach for making superhydrophobic and superhydrophilic coatings. The water-repellent, water-wicking, and anti-icing coatings reported here are made from a class of materials called soft dendritic colloids (SDCs). The branched, nanofibrous SDCs are produced in suspension through nonsolvent-induced phase separation in a turbulent medium. The properties of coatings formed by drying ethanol suspensions of SDCs made of polystyrene, polyvinyl alcohol, and polyester are compared. The highly branched SDC morphology creates entangled, porous coating layers with strong physical adhesion to the substrate due to the multitude of nanofiber sub-contacts analogous to the "gecko leg effect". Polystyrene SDC coatings show excellent superhydrophobicity but weaker adhesion due to low surface energy. Alternatively, polyvinyl alcohol SDC coatings show superhydrophilicity and strong adhesion from their high surface energy. Two strategies to improve the adhesivity and cohesivity of the SDCs layers are shown effective -use of intertwined networks and of silicone droplet microbinders. The water repulsion, together with the air trapped in the blended superhydrophobic coatings also makes them effective against ice nucleation and adhesion. Finally, these SDCs make thin, flexible, and durable nonwovens with similar properties.

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Liquid-Repellent Surfaces

Cited by 22 publications

References 128 publications

Preparation of Food Grade Superhydrophobic Coatings Based on Attapulgite Nanorods

Preparation of Food Grade Superhydrophobic Coatings Based on Attapulgite Nanorods

Tribological Behavior of Bioinspired Surfaces

Superhydrophobic and Anti‐Icing Coatings Made of Hierarchically Nanofibrillated Polymer Colloids

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