A robust and transparent hydrogel coating for sustainable antifogging with excellent self-cleaning and self-healing ability

Xu, Xuanfei; Zhu, Tianxue; Zheng, Weiwei; Xian, Caiyun; Huang, Jianying; Chen, Zhong; Cai, Weilong; Zhang, Weiying; Lai, Yuekun

doi:10.1016/j.cej.2022.137879

Cited by 43 publications

(18 citation statements)

References 43 publications

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“…The oxygen vacancies on the ZnO surface easily capture the photogenerated electrons, resulting in a lower probability of electron−hole complexation and, thus, a lower intensity of PL. 39,40 Therefore, the weakening of the intensity of the photoluminescence peak further supports the fact that the increase in temperature not only increases the material's crystallinity but also provides further evidence of the presence of ZnO on the side. As shown in Figure 5a, the WCA of the superhydrophobic ZnO/Cu−ZnMOFs@SA (140 °C) composite coating surface exhibited no significant change with an increase in environmental temperature from 0 to 180 °C; the WCA was above 155°.…”

Section: Resultssupporting

confidence: 55%

“…The decrease in the PL intensity could also result from increasing ZnO content due to the increase in temperature. The oxygen vacancies on the ZnO surface easily capture the photogenerated electrons, resulting in a lower probability of electron–hole complexation and, thus, a lower intensity of PL. , Therefore, the weakening of the intensity of the photoluminescence peak further supports the fact that the increase in temperature not only increases the material’s crystallinity but also provides further evidence of the presence of ZnO on the side.…”

Section: Resultsmentioning

confidence: 84%

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Construction of Hierarchical Micro/Nanostructured ZnO/Cu–ZnMOFs@SA Superhydrophobic Composite Coatings with Excellent Multifunctionality of Anticorrosion, Blood-Repelling, and Antimicrobial Properties

Zhang

Pei

Huang

et al. 2022

ACS Appl. Mater. Interfaces

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Naked medical devices are often damaged by blood, bacteria, and other extreme environmental conditions (heat, humidity, acid, alkali, salts, and others), causing device failure and increasing difficulty for the operator. They can also cause inflammation and coagulation resulting in severe complications and even death. In this work, the superhydrophobic ZnO/copper−zinc metal−organic frameworks@stearic acid (ZnO/Cu−ZnMOFs@SA) composite coatings with hierarchical micro/nanostructures were fabricated on Zn substrates via a one-step hydrothermal method. The effects of hierarchical micro/nanostructures on surface wettability, physicochemical stability, and biological properties have been studied in this manuscript. The structure not only provided the coatings with robust waterproofing, abrasive resistance, durability, and thermal and light irradiation stability but also successfully recovered their superhydrophobicity by remodifying the surface with SA, showing excellent repeatability. In addition, the coating demonstrates excellent corrosion resistance and self-cleaning ability and rejects various solid and liquid contaminants. The superhydrophobic ZnO/Cu−ZnMOFs@SA composite coatings also exhibited excellent antibacterial and thrombosis resistance. The findings indicated that the superhydrophobic composite coatings have a strong potential for application in medical instruments for exhibiting multifunctional properties in various extreme environments.

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Section: Resultssupporting

confidence: 55%

Section: Resultsmentioning

confidence: 84%

Construction of Hierarchical Micro/Nanostructured ZnO/Cu–ZnMOFs@SA Superhydrophobic Composite Coatings with Excellent Multifunctionality of Anticorrosion, Blood-Repelling, and Antimicrobial Properties

Zhang

Pei

Huang

et al. 2022

ACS Appl. Mater. Interfaces

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“…As the long-term stability is very important for coatings in outdoor service, it is of great value to study the mechanical robustness and stability of the films. [38][39][40] Felt abrasion test, water impact test, X-cut tape test, and tape-peeling test were performed to evaluate the robustness of the coatings. First, the film was checked by felt abrasion test, and a standard felt was selected as the friction material, and 40 reciprocating motions were performed under a load of 15 N. Figure 6a comparative change in transmittance before and after felt abrasion test, which shows an average transmittance (400-2000 nm) decay of 0.57%, where the inset shows the device used in this test.…”

Section: Mechanical Stabilitymentioning

confidence: 99%

Mechanically Robust Hybrid Coatings for Antifogging, Antireflection, and Self‐Cleaning Applications

Kong

Chen

et al. 2023

Adv Materials Inter

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as goggles and visual laryngoscopes has severely hampered the work for medical practitioners. In our daily life, we are tired of fogging on swimming goggles, helmet visors, face shields, commercial freezer windows, automobile LED headlights, etc. The blurred vision caused by fogging brings potential safety hazards to aviation and traffic. [3][4][5][6] Therefore, effective and long-lasting antifogging means are of great importance to those practical applications. Currently, two main categories of antifogging strategies have been developed. The first strategy is closely related to the regulation of environmental parameters. By controlling the relative humidity, temperature, and surrounding air flows to achieve the purpose of surface antifogging. However, the scope of its application has greatly been restricted due to the energy consumption, time consuming, materials selection, and mist elimination equipment design and maintenance. Another antifogging strategy mainly focuses on regulating the surface wettability. [7][8][9][10][11] So far, both superhydrophilic and superhydrophobic surfaces are highly sought after by researchers due to its manageable properties, better cost effectiveness, and potential long-lasting antifogging performance. [12,13] The preparation of superhydrophilic surface is a relatively more effective method to inhibit fog formation. Compared to superhydrophobic surfaces, superhydrophilic surfaces tend to exhibit faster evaporation rates, on which the water droplets uniformly spread out due to the higher affinity to the surface and the quick coalescence of water droplets, promoting the formation of a faster fog-free interface. [14] In addition, the uniform water film on superhydrophilic surfaces can prevent unfavorable light scattering and reflection, particularly the applications in transparent windows such as optical devices, energy-conversion instruments, and outdoor greenhouses. [15] Great interests have been shown in constructing micro-geometric structures on solid surfaces and combine them with chemical modifications to achieve various special wettability. [16] However, the resulting structure usually reduces the mechanical strength, followed by bringing about a serious optical loss, which basically refers to two sides as follows: i) One is the enhanced reflection caused by the surface roughness, when the texture size is greater than the wavelength of incident light, and ii) the other is the refraction on the rough surface (Rayleigh scattering). Those drawbacks will undoubtedly limit the application of thin films on transparent windows. [17] Therefore, it is imperative to take those problems into comprehensive consideration to get In this work, a novel multifunctional film with durable antifogging performance and remarkable optical property is designed. By doping and hybridization to build an organic-inorganic siloxane network, the surface achieves long-lasting wettability and superhydrophilicity with a water contact angle of 0°, which is maintained within 10° for over 130 days. The low refr...

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“…Moreover, the damaged coating could self-heal in 4 min and was well-retained after rinsing 5 times with a high-speed water faucet, indicating its durability and stability. Xu et al 117 fabricated a robust and transparent (about 90%) self-healing coating from PVA, SA, TiO 2 , and glycerin.…”

Section: Self-healing Coatings For Food Packagingmentioning

confidence: 99%

“…Moreover, the damaged coating could self‐heal in 4 min and was well‐retained after rinsing 5 times with a high‐speed water faucet, indicating its durability and stability. Xu et al 117 fabricated a robust and transparent (about 90%) self‐healing coating from PVA, SA, TiO 2 , and glycerin. The cross‐linked coating had a water contact angle of 66.8° and was able to absorb the surrounding water vapour quickly, achieving the anti‐fogging performance.…”

Section: Potential Applications Of Self‐healing Materials In Food Pac...mentioning

confidence: 99%

Recent advances in self‐healing materials for food packaging

Huang

Wang

2022

Packag Technol Sci

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Food packaging materials are often inevitably and imperceptibly damaged during the transportation, handling, and storage, and the disruption of their integrity poses a challenge to food preservation. Food packaging materials with self‐healing capability can automatically repair the damaged areas and reconstruct original properties to avoid degradation of food quality and loss of nutrients. Various self‐healing materials based on dynamic covalent bonds and/or dynamic non‐covalent interactions have been developed and applied in food packaging in the forms of films and coatings at laboratory scale, and more efforts are required for the commercialization of these novel smart packaging materials. This is the first review to summarize the recent progress in the preparation of self‐healing packaging materials through different mechanisms, compare the self‐healing efficiency under different conditions, and highlight the potential applications of self‐healing films and coatings with recoverable mechanical and barrier properties and other functionalities (e.g., antimicrobial and anti‐fogging capacities). Finally, the future opportunities and challenges of applying self‐healing materials in food packaging are described.

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A robust and transparent hydrogel coating for sustainable antifogging with excellent self-cleaning and self-healing ability

Cited by 43 publications

References 43 publications

Construction of Hierarchical Micro/Nanostructured ZnO/Cu–ZnMOFs@SA Superhydrophobic Composite Coatings with Excellent Multifunctionality of Anticorrosion, Blood-Repelling, and Antimicrobial Properties

Construction of Hierarchical Micro/Nanostructured ZnO/Cu–ZnMOFs@SA Superhydrophobic Composite Coatings with Excellent Multifunctionality of Anticorrosion, Blood-Repelling, and Antimicrobial Properties

Mechanically Robust Hybrid Coatings for Antifogging, Antireflection, and Self‐Cleaning Applications

Recent advances in self‐healing materials for food packaging

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