Superhydrophobic coatings for food packaging applications: A review

Ruzi, Mahmut; Çelik, Nusret; Önses, M. Serdar

doi:10.1016/j.fpsl.2022.100823

Cited by 66 publications

(35 citation statements)

References 117 publications

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“…For this, an ITO plate was coated with the superhydrophobic coating, and healing was achieved after only 3 min of applying moderate voltage (see Figure S8 and Video S2). Another potential application of self-healing superhydrophobic coatings is for food packaging to reduce food waste. , Therefore, we evaluated the antifouling ability of the superhydrophobic coating against common liquid food such as pomegranate syrup, as shown in Figure a. Here, some samples stick to the surface after degradation.…”

Section: Results and Discussionmentioning

confidence: 99%

Self-Healing of Biocompatible Superhydrophobic Coatings: The Interplay of the Size and Loading of Particles

et al. 2023

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The broad application potential of superhydrophobic coatings is limited by the usage of environment-threatening materials and poor durability. The nature-inspired design and fabrication of self-healing coatings is a promising approach for addressing these issues. In this study, we report a fluorine-free and biocompatible superhydrophobic coating that can be thermally healed after abrasion. The coating is composed of silica nanoparticles and carnauba wax, and the self-healing is based on surface enrichment of wax in analogy to the wax secretion in plant leaves. The coating not only exhibits fast self-healing, just in 1 min under moderate heating, but also displays increased water repellency and thermal stability after healing. The rapid selfhealing ability of the coating is attributed to the relatively low melting point of carnauba wax and its migration to the surface of the hydrophilic silica nanoparticles. The dependence of self-healing on the size and loading of particles provides insights into the process. Furthermore, the coating exhibits high levels of biocompatibility where the viability of fibroblast L929 cells was ∼90%. The presented approach and insights provide valuable guidelines in the design and fabrication of self-healing superhydrophobic coatings.

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Section: Results and Discussionmentioning

confidence: 99%

Self-Healing of Biocompatible Superhydrophobic Coatings: The Interplay of the Size and Loading of Particles

et al. 2023

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“…Superhydrophobic surface refers to the surface where the contact angle between water droplets and solid materials is greater than 150°, and the rolling angle is less than 10° when solid materials are in contact with water droplets. − Superhydrophobic surfaces are widely used in industry, military, and daily life because of their excellent hydrophobicity. − An important application of superhydrophobic surfaces is self-cleaning, which can effectively improve the waterproof and antifouling ability of its surface when it is used on glass, clothing, and metal. Superhydrophobic materials can also be used in pipeline antiscaling, oil–water separation, drag reduction, antiskid, anticorrosion, and other applications.…”

Section: Introductionmentioning

confidence: 99%

Preparation of a Superhydrophobic Surface by a One-Step Powder Pressing Method with Liquid Silicone Rubber As the Carrier

et al. 2023

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The preparation methods of the superhydrophobic surface play an important role in its application, but most of the existing preparation methods are complicated in operation, high in cost, and polluting to the environment. In order to find a simple, rapid, lowcost, and nonenvironmentally polluting preparation method of the superhydrophobic surface, this paper used liquid silicone rubber as the carrier. Before the liquid silicone rubber was nearly cured, it was evenly covered with a layer of silicon dioxide powder, and then 5 N weight was used to compact the powder on the rubber surface, so that the superhydrophobic surface was quickly formed on its surface. The wettability, bouncing performance, self-cleaning performance, and bending durability of liquid silicone rubber before and after treatment were compared. The results show that the static contact angle and rolling angle of the liquid silicone rubber after powder pressing were 158.22 ± 2.01°and 1.00 ± 0.50°, respectively. Moreover, the superhydrophobic surface formed by the powder pressing method had good self-cleaning performance, high temperature resistance, bending resistance, and excellent droplet bounce performance. The strategy of preparing a superhydrophobic surface by a one-step powder pressing method may be applied to the preparation of the superhydrophobic surface on a large scale.

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“…As stated above, the nano-and microstructural roughness of the surface is very important for acquiring superhydrophobicity [1][2][3][4][5][6][7][8][9][10] . Bearing this in mind, we envisioned that combining self-assembly of CNC, which leads to the formation of hydrophilic films with interesting surface architectures at the micro-and nanoscales, with direct organocatalytic surface-functionalization could lead to a new design for creating superhydrophobic CNC films.…”

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confidence: 97%

“…Several applications have been investigated in fields such as packaging, biomedical applications, defense, engineering, sensors, green electronics, apparel and aerospace 1-10 . The surface texture or chemical properties of superhydrophobic surfaces generally contribute to their water repellency [1][2][3][4][5][6][7][8][9][10] . In nature, the most famous superhydrophobic surface is the leaves of lotus plants (e.g., Nelumbo nucifera), which have a high contact angle (~ 160°) and self-cleaning properties (the lotus effect) 11,12 .…”

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confidence: 99%

“…This observation is due to a combination of hydrophobic properties and nano-and microstructural roughness provided by hydrophobic epicuticular waxes (wax crystals) and the papillae formed by the epidermal (outermost) cells of the lotus leaf, respectively 11,12 . Mimicking these characteristics found in nature allow for accomplishing superhydrophobicity on various material surfaces [1][2][3][4][5][6][7][8][9][10] . Superhydrophobic properties are characterized by a water contact angle (WCA) > 150° and various adhesion levels of water on the surface determined by dynamic contact angle measurements 4 .…”

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Design and fabrication of superhydrophobic cellulose nanocrystal films by combination of self-assembly and organocatalysis

Alimohammadzadeh

Sanhueza

Córdova

2023

Sci Rep

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Cellulose nanocrystals, which have unique properties of high aspect ratio, high surface area, high mechanical strength, and a liquid crystalline nature, constitute a renewable nanomaterial with great potential for several uses (e.g., composites, films and barriers). However, their intrinsic hydrophilicity results in materials that are moisture sensitive and exhibit poor water stability. This limits their use and competitiveness as a sustainable alternative against fossil-based materials/plastics in packaging, food storage, construction and materials application, which cause contamination in our oceans and environment. To make cellulose nanocrystal films superhydrophobic, toxic chemicals such as fluorocarbons are typically attached to their surfaces. Hence, there is a pressing need for environmentally friendly alternatives for their modification and acquiring this important surface property. Herein, we describe the novel creation of superhydrophobic, fluorocarbon-free and transparent cellulose nanocrystal films with functional groups by a bioinspired combination of self-assembly and organocatalytic surface modification at the nanoscale using food approved organic acid catalysts. The resulting film-surface is superhydrophobic (water contact angle > 150°) and has self-cleaning properties (the lotus effect). In addition, the superhydrophobic cellulose nanocrystal films have excellent water stability and significantly decreased oxygen permeability at high relative humidity with oxygen transmission rates better than those of commonly used plastics.

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Superhydrophobic coatings for food packaging applications: A review

Cited by 66 publications

References 117 publications

Self-Healing of Biocompatible Superhydrophobic Coatings: The Interplay of the Size and Loading of Particles

Self-Healing of Biocompatible Superhydrophobic Coatings: The Interplay of the Size and Loading of Particles

Preparation of a Superhydrophobic Surface by a One-Step Powder Pressing Method with Liquid Silicone Rubber As the Carrier

Design and fabrication of superhydrophobic cellulose nanocrystal films by combination of self-assembly and organocatalysis

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