In-situ thin coating of silica micro/nano-particles on polymeric films and their anti-fogging application

Bretler, Sharon; Kanovsky, Naftali; Iline-Vul, Taly; Cohen, Sarit; Margel, Shlomo

doi:10.1016/j.colsurfa.2020.125444

Cited by 28 publications

(16 citation statements)

References 30 publications

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“…Antifogging properties were evaluated using the hot-fog test, which simulates real fogging conditions. , An open 20 mL glass vial filled with 6 mL of water was covered with the polymeric film facing the coated side toward water. After that, the vial was heated to 60 °C for 120 min, leading to water condensation on the polymeric film samples.…”

Section: Methodsmentioning

confidence: 99%

Immobilization of Heteroatom-Doped Carbon Dots onto Nonpolar Plastics for Antifogging, Antioxidant, and Food Monitoring Applications

et al. 2021

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This work presents the facile synthesis of heteroatom-doped fluorescent carbon quantum dots (C-dots), which could serve as an antioxidant. Herein, nitrogen, phosphorous, and sulfur codoped carbon dots (NPSC-dots) have been synthesized by a single-step hydrothermal strategy. Owing to the radical scavenging activity of the NPSC-dots, they were tested against several methods as well as in practical applications. The antioxidant ability of the NPSC-dots was efficiently utilized on plastic films by coating with these NPSC-dots. For the very first time, NPSC-dots were immobilized onto nonpolar plastic films (polypropylene) via photochemical covalent grafting to extend the shelf life of food items or storage without affecting the quality of plastic films. The NPSC-dot-coated PP film with negligible deterioration of transparency was extensively studied using scanning electron microscopy (SEM), atomic force microscopy (AFM), Fourier transform infrared (FTIR) analysis, X-ray photoelectron spectroscopy (XPS), contact angle measurement, and thermogravimetric analysis (TGA). The fluorescent character, antioxidant ability, and durability under different solvent systems of the coated film were examined. Also, the coated films were extensively and rigorously evaluated against simulated drastic environmental conditions to ensure the durability and antifogging application.

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Section: Methodsmentioning

confidence: 99%

Immobilization of Heteroatom-Doped Carbon Dots onto Nonpolar Plastics for Antifogging, Antioxidant, and Food Monitoring Applications

et al. 2021

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“…[194,196] Owing to the intrinsical hydrophilicity, it is reported that graphene oxide coated glasses displayed a superior anti-fogging property when cooled at −15 • C with decreasing light transmission. [197][198][199] It is assumed that MXenes with controllable polar groups (such as hydroxyl (OH), amino (NH 2 ) or carboxyl (COOH)) contribute to the anti-fogging performance by changing the water drop/surface interaction and the wetting behavior. [194] Because of the potential strong interaction between MXenes additives and polymer films, it is also slow down the migration of additives in polymers to maintain anti-fogging performance for a longer time.…”

Section: Anti-fogging Propertymentioning

confidence: 99%

“…[ 194,196 ] Owing to the intrinsical hydrophilicity, it is reported that graphene oxide coated glasses displayed a superior anti‐fogging property when cooled at −15°C with decreasing light transmission. [ 197–199 ]…”

Section: Mxene/polymer Membranes In Food Packagingmentioning

confidence: 99%

“…It presents highly efficient water pumping, heat localization, vapor generation, and salt resistance during photothermal desalination. [ 198 ] We imply that the modificatory and dispersible characters of MXenes are promising for fabricating MXenes/polymers composites since the surface chemistry plays a vital role for hydrophilicity. It supports a great potential applications of MXenes as anti‐fogging packaging films.…”

Section: Mxene/polymer Membranes In Food Packagingmentioning

confidence: 99%

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MXenes: An emergent materials for packaging platforms and looking beyond

Zhou

Hao

et al. 2022

Nano Select

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MXenes have been employed as two-dimensional (2D) nanostructured fillers in polymers matrix to design composites, which have tailored multi-functional properties with great potential applications in catalysis, sensor, energy storage, membrane and biomedicine areas. Analogous to 2D materials such as graphene and hexagonal boron nitrides, MXenes serve as robust support to expand a significant pathway to prepare composites. This paper outlines an overview of the recent development of MXenes and MXenes-based composites decorated by functional properties that potentially hold a promise on the packaging applications. A particular emphasis is to illustrate the essential properties of MXenes/polymer membrane intended food packaging such as barrier and antibacterial properties, biocompatibility and thermal stability. Furthermore, the progress and emergent values are presented in the perspective of instrumentation packaging that broadens prospects for antistatic, electromagnetic shielding and invisibility purposes. As a whole, this review promotes an emerging field to formulate the good ingredient of food packaging and safety to produce green and versatile membranes with high barrier performance. Finally, challenges and insightful perspectives for the application of MXenes in the packaging area are elucidated.

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“…This was previously reported using a similar in situ synthesis on PE using exclusively TEOS as the monomer. 18 In that study, SiO 2 particles were prepared separately after which a corona-treated PE film was placed in the solution for 4 hours. This resulted in an insignificant concentration of surface-bound particles, which indicates that the particles grown in situ were covalently bonded and not attached through hydrogen bonds.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Transparent Silica/PEG Smooth Thin Coatings on Polymeric Films for Antifogging Applications

Kanovsky

Margel

2022

ACS Omega

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Fog accumulation on surfaces typically has a negative effect by reducing their transparency and efficiency. Applications such as plastic packaging, agricultural films, and particularly many optical devices suffer from these negative effects. One way to prevent fogging is to coat the substrate with an antifogging coating having a smooth surface and hydrophilic surface chemical groups. This causes the fog water droplets that come into contact with the substrate to completely flatten across its surface, thus retaining transparency. These coatings are mostly relegated to laboratory research due to their insufficient stability and costly synthetic processes. We proposed the use of organically modified silica particles consisting of a mixture of tetraethyl orthosilicate and methacryloxypropyltriethoxysilane, which were grown in situ in the presence of a corona-activated polyethylene film, thus providing a thin siloxane coating containing activated double bonds. An additional coating of poly(ethylene glycol) diacrylate was then spread on the coated film and polymerized via UV curing. The in situ process and UV curing anchored the coating to the substrate through covalent bonds, which provided additional stability. This coating exhibited low surface roughness and contact angle, which resulted in excellent antifogging properties when exposed to a hot-fog test. Furthermore, the antifogging coating retained its properties after 10 hot-fog cycles, indicating the high coating stability. Additionally, the coating was found durable to immersion in aqueous pH levels 1–13 and detergent solutions as well as to tape test applications and sand test. This coating was compared to a commercially available antifogging spray, which was used to coat a polyethylene film. This resulted in excellent initial antifogging properties, which decreased after exposure to durability tests. The results of the in situ coating process indicate its potential uses for industrial applications.

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In-situ thin coating of silica micro/nano-particles on polymeric films and their anti-fogging application

Cited by 28 publications

References 30 publications

Immobilization of Heteroatom-Doped Carbon Dots onto Nonpolar Plastics for Antifogging, Antioxidant, and Food Monitoring Applications

Immobilization of Heteroatom-Doped Carbon Dots onto Nonpolar Plastics for Antifogging, Antioxidant, and Food Monitoring Applications

MXenes: An emergent materials for packaging platforms and looking beyond

Fabrication of Transparent Silica/PEG Smooth Thin Coatings on Polymeric Films for Antifogging Applications

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