A facile antifogging/frost-resistant coating with self-healing ability

Wang, Wei; Lu, Pingli; Ye, Fan; Tian, Limei; Niu, Shichao; Zhao, Jie; Ren, Luquan

doi:10.1016/j.cej.2019.122173

Cited by 54 publications

(22 citation statements)

References 45 publications

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“…The main reason of optical loss is endoscopic lens fogging, which is caused by the discrepancies in temperature and humidity between ambient conditions and in vivo . Most antifogging approaches for medical devices are based on traditional methods, for instance, spraying antifogging reagents or employing heating apparatus, but they show disadvantages of short residual action, cumbersome procedure, high medical expenses, and so on. , Currently, developing coating surfaces with enhanced antifogging performance has been gaining much attention to solve the atomization problem. − In addition to superhydrophilic and superhydrophobic strategies, applying a water-absorbing coating with amphiphilicity to a surface is an effective antifogging approach, where the condensed water molecules or the moist vapor can be rapidly imbibed into the bulk of the coating, followed by uniform diffusion of the absorbed water molecules to prevent the formation of a large and light-scattering water domain. − ,− …”

Section: Introductionmentioning

confidence: 99%

Antifogging/Antibacterial Coatings Constructed by N-Hydroxyethylacrylamide and Quaternary Ammonium-Containing Copolymers

Bai

Zhao

et al. 2020

ACS Appl. Mater. Interfaces

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Endoscopic surgery has gained widespread applications in various clinical departments, and endoscope surfaces with antifogging and antibacterial properties are essential for elaborate procedures. In this work, novel antifogging/antibacterial coatings were developed from a cationic copolymer and a hydrophilic copolymer, polyhedral oligomeric silsesquioxane-poly(quaternary ammonium compound-co-2-aminoethyl methacrylate hydrochloride) [POSS-P(QAC-co-AEMA)] and poly(N-hydroxyethylacrylamide-co-glycidyl methacrylate) [P(HEAA-co-GMA)] via a facile and green blending method. Such transparent coatings showed excellent antifogging performance under both in vitro and in vivo fogging conditions, mainly attributed to the high water-absorbing capability of HEAA and QAC. Antibacterial assays proved that the blending coatings had a superior antibacterial property, which could be improved with the proportion of POSS-P(QAC-co-AEMA) because of the bactericidal efficiency of cationic QAC. Meanwhile, owing to the high hydratability of HEAA, the blending coatings exhibited a bacteria-repelling property. By simply tuning the blending ratio of POSS-P(QAC-co-AEMA) and P(HEAA-co-GMA), the comprehensive bacteria-killing and bacteria-repelling properties of the coatings were achieved. Moreover, after incubating with red blood cells, the prepared blending coatings presented a lower hemolytic rate of less than 5%. The findings provided a potential means for addressing the challenge of fogging and bacterial contamination occurring in endoscopic lenses and other medical devices.

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Section: Introductionmentioning

confidence: 99%

Antifogging/Antibacterial Coatings Constructed by N-Hydroxyethylacrylamide and Quaternary Ammonium-Containing Copolymers

Bai

Zhao

et al. 2020

ACS Appl. Mater. Interfaces

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“…There are few standards for evaluating the performance of antifogging films . In fact, several reports rely on optical photos alone to qualitatively show the antifogging ability of films under different temperatures in humid air. , A similar method is adopted in this test. One fogging test is conducted by holding the sample above a hot water dish (80 °C) for 10 s with a piece of bare glass used as control.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, superwetting coatings and hygroscopic coatings also have antifogging effect. Hygroscopic coatings are often prepared via a hydrogen bond cross-linking strategy − and absorb the moisture into the interior. However, excessive moisture will cause these coatings to swell.…”

Section: Introductionmentioning

confidence: 99%

Superhydrophilic Fe³⁺ Doped TiO₂ Films with Long-Lasting Antifogging Performance

Yang

Sun

et al. 2021

ACS Appl. Mater. Interfaces

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Based on the superhydrophilicity of titanium dioxide (TiO 2 ) after ultraviolet irradiation, it has a high potential in the application of antifogging. However, a durable superhydrophilic state and a broader photoresponse range are necessary. Considering the enhancement of the photoresponse of TiO 2 , doping is an effective method to prolong the superhydrophilic state. In this paper, a Fe 3+ doped TiO 2 film with long-lasting superhydrophilicity and antifogging is prepared by sol−gel method. The experiment and density-functional theory (DFT) calculations are performed to investigate the antifogging performance and the underlying microscopic mechanism of Fe 3+ doped TiO 2 . Antifogging tests demonstrate that 1.0 mol % Fe 3+ doping leads to durable antifogging performance which lasts 60 days. The DFT calculations reveal that the Fe 3+ doping can both increase the photolysis ability of TiO 2 under sunlight exposure and enhance the stability of the hydroxyl adsorbate on TiO 2 surface, which are the main reasons for a longlasting superhydrophilicity of TiO 2 after sunlight exposure.

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“…The resultant coated slides can effectively avoid fog formation and maintain high transmittances (>85%) in high humidity environments over a wide temperature range (20–100 ℃) for as long as 30 min, one of the best among its peers. [ 31–34 ] Furthermore, we demonstrate the excellent antifogging effect of PVA/PTPM HN coating on eyeglasses, paving the way for such a technology to commercial applications. As the lack of adhesion and over‐swelling are two well‐known deficiencies of hydrogels, [ 35,36 ] the progress made in this study also enables hydrogels to be used in many other fields, [ 37–40 ] for example, under water adhesives.…”

Section: Introductionmentioning

confidence: 86%

Effective Antifogging Coating from Hydrophilic/Hydrophobic Polymer Heteronetwork

Shi

Qiu

2022

Advanced Science

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Fogging on optical devices may severely impair vision, resulting in unacceptable adverse consequences. Hydrophilic coatings can prevent surface fogging by instantly facilitating pseudo-film water condensation but suffer from short antifogging duration due to water film thickening with further condensation. Here, an innovative strategy is reported to achieve longer antifogging duration via thickening the robust bonded hydrophilic/hydrophobic polymer heteronetwork coating to enhance its water absorption capacity. The combination of strong interfacial adhesion and hydrophilic/hydrophobic heteronetwork structure is key to this approach, which avoids interfacial failure and swelling-induced wrinkles under typical fogging conditions. The developed antifogging coating exhibits prolonged antifogging durations over a wide temperature range for repetitious usages. Eyeglasses coated with this coating successfully maintained fog-free vision in two typical scenarios. Besides, the coating recipes developed in this study also have potential as underwater glues as they demonstrate strong adhesions to both glass and polymer substrates in wet conditions.

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A facile antifogging/frost-resistant coating with self-healing ability

Cited by 54 publications

References 45 publications

Antifogging/Antibacterial Coatings Constructed by N-Hydroxyethylacrylamide and Quaternary Ammonium-Containing Copolymers

Antifogging/Antibacterial Coatings Constructed by N-Hydroxyethylacrylamide and Quaternary Ammonium-Containing Copolymers

Superhydrophilic Fe³⁺ Doped TiO₂ Films with Long-Lasting Antifogging Performance

Effective Antifogging Coating from Hydrophilic/Hydrophobic Polymer Heteronetwork

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A facile antifogging/frost-resistant coating with self-healing ability

Cited by 54 publications

References 45 publications

Antifogging/Antibacterial Coatings Constructed by N-Hydroxyethylacrylamide and Quaternary Ammonium-Containing Copolymers

Antifogging/Antibacterial Coatings Constructed by N-Hydroxyethylacrylamide and Quaternary Ammonium-Containing Copolymers

Superhydrophilic Fe3+ Doped TiO2 Films with Long-Lasting Antifogging Performance

Effective Antifogging Coating from Hydrophilic/Hydrophobic Polymer Heteronetwork

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Product

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Superhydrophilic Fe³⁺ Doped TiO₂ Films with Long-Lasting Antifogging Performance