Surfaces and Interfaces
·
2024
·
IF 5.7
Sijun Li,Donghui Kou,Aini Wu,Lei Gao,Shufen Zhang,Wei Ma
Fogging on transparent substrate greatly impacts transmittance, causing inconvenience and potential hazards. Increasing surface roughness to enhance hydrophilicity often reduces transmittance. Here, by enhancing the Marangoni flow to inhibit the coffee-ring effect during SiO 2 droplet drying, we propose for the first time to manufacture superhydrophilic and high-transmittance coatings with porous structures on various substrates, including glass and resin. This approach relies on a simple, potentially large-scale ultrasonic spray method to enhance the Marangoni flow of SiO 2 dispersion with different particle sizes by adding multiple surfactants to reduce the surface tension of the dispersion. The water contact angle of the SiO 2 film decreases to below 5° within 0.5 s, imparting anti-fogging properties to the substrate. The film exhibits a transmittance of 93.1% at 580 nm, surpassing the inherent 90.8% transmittance of the bare glass. Notably, the film shows remarkable self-cleaning properties due to potent hydration from eco-friendly SiO 2 nanoparticles and the porous structure. Owing to the hydrogen bonding between tightly packed small-sized SiO 2 particles as well as between the particles and substrate, the surface morphology of the film on glass remains intact even after washing, and soaking. The porous SiO 2 film, with a contact angle dropping to below 5° within 0.5 s, maintains its superhydrophilicity even after being exposed to high temperatures, UV irradiation, and humidity conditions. The simple production process of the porous SiO 2 films offers a promising method for preparing high-transmittance anti-fogging films with significant industrial potential.
研究领域:
材料科学
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表面工程
·
纳米技术
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Sijia Yang,Xiao Song,Ran Wei,Chuanjiang Zhou,Zhaoqiang Wu,Hong Chen
The formation of fog on the surface of transparent glass severely reduces its transmittance, which limits its application in medical devices, optical instruments, and other industries that require high transmittance. A new transparent, water-resistant, and abrasion-resistant PVA anti-fog coating based on polyvinyl alcohol (PVA), 5-sulfosalicylic acid (SAD), and ammonium persulfate (APS) was developed in this study. The hydroxyl, carboxyl, and sulfonic acid groups in the SAD molecule can form dense hydrogen bonds with the hydroxyl groups on the PVA side chain, which increases the water resistance of the coating. APS, as a free radical initiator, can produce sulfate radicals during the thermal curing of the coating and eventually form a cross-linked structure of the PVA main carbon chain, thereby further improving the water resistance, friction resistance, and thermal stability of the coating. The experimental results show that the transparent glass surface modified by the coating not only has excellent light transmittance and anti-fog performance but also has good abrasion resistance and thermal stability. In addition, the preparation method of the transparent hydrophilic anti-fog coating is simple and convenient, and nontoxic and environmentally friendly water is used as the solvent, which is expected to be used in large-scale industrial production.
研究领域:
材料科学
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表面工程
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光学材料
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产品关联
DOI
高影响因子
Advanced Materials Technologies
·
2019
·Vol. 4
·期 7
·1900045
·
IF 5.395
Haiyang Wang,Sen Lin,Di Zu,Jianan Song,Zhenglian Liu,Lei Li,Chao Jia,Xiaopeng Bai,Junchen Liu,Ziwei Li,Dong Wang,Ya Huang,Minghao Fang,Ming Lei,Bo Li,Hui Wu
Fog and frost formation cause many issues such as influencing building interior daylighting of architectural aesthetics or causing traffic accidents in cold weather. Transparent flexible heaters (TFHs) play a vital role in defogging smart windows. Herein, the rapid and facile fabrication of uniform, flexible, and large-scale TFHs based on percolation networks of Ag nanofiber (AgNF) is reported using blow-spinning method followed with room-temperature UV reduction. The TFHs exhibit excellent optical and electrical properties with a high transmittance of ≈95% and low sheet resistance of ≈16 Ω sq −1 . The TFHs based on AgNFs also present excellent mechanical flexibility and remain steady after 1000 cycles of bending. Furthermore, the saturation temperature of AgNF/cPI (colorless polyimide) electrode-based TFHs (9.5 Ω sq −1 ) reaches more than 285 °C at a DC voltage of 10 V, more effective than those of tin-doped indium oxide (ITO)-based TFHs (55 Ω sq −1 ) about 150 °C at the same transmittance of visible light (88%). The flexible AgNFs-based heater demonstrates excellent heating performance, as well as reliable chemical and mechanical durability in defogging smart windows of vehicles or buildings.
研究领域:
材料科学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2023
·
IF 3.6
Chong Ke,Chenhua Zhang,Yongdong Jiang
In this study, a rapid thermal process, which can be achieved via the conventional glass tempering process, was utilized to fabricate silica-based superhydrophilic antifogging coatings with micro-nano hierarchical roughness on glass substrates. The effects of SiO 2 nanoparticle and triethylborate loadings on the coatings’ properties have been systematically investigated. Moreover, the formation mechanism of such coatings has been explained. The optimal coatings demonstrate a high level of hydrophilicity with a water contact angle (WCA) of ∼ 0°. Meanwhile, such coatings exhibit good antifogging effect and robustness as well.
研究领域:
材料科学
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表面工程
✓ 已验证
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2020
·
IF 4.469
Ziyang Zheng,Yuping Liu,Li Wang,Li Yu,Yuan Cen,Tingting Zhu,Danmei Yu,Changguo Chen
A novel organic-inorganic zwitterionic polymer was developed via free radical copolymerization using quaternary ammonium salt as hydrophilic monomer . The unique structure realizes the perfect compromise between the hydrophobicity and hydrophilicity. The chemical composition, the physical properties, the anti-fog characteristic and mechanism of the zwitterionic acrylate coating were investigated by FT-IR, UV-VIS spectrometry , XPS , AFM and water contact angle . After anti-fogging test under ultralow temperature at −40 °C, the resultant zwitterionic acrylate polymer displays high transparency of 91 %, significantly better than that of the bare PC board 21 %. AFM images and water contact angle test demonstrate that the hydrophilic (the soft) region is continuously distributed on the surface of SMA-H coating with smaller water contact angle of 10°, indicates better hydrophilicity and wettability . The organic-inorganic zwitterionic polymer endows the coating on polycarbonate (PC) substrate with excellent anti-fog/frost performance, good adhesion and stability (repeated use for 100 times) under wider temperature range (−40 ∼ 80 °C) of applications.
研究领域:
材料科学
·
高分子化学
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DOI
高影响因子
LANGMUIR
·
2024
·
IF 3.7
Xiuxian Gu,Jinyue Ma,Junhui He
Although a wide variety of single-function coatings have been successfully developed, the integration of multiple functions onto a single coating has remained an immense challenge in the field. Here, we report a simple room-temperature fabrication of robust coatings with UV-shielding, light conversion, and antifogging functionalities. The addition of glutaraldehyde (GA) molecular cross-linker and carbon dot (CD) nanocross-linker with light conversion function to poly(vinyl alcohol) (PVA) resulted in the formation of robust spatial structures of coatings. The fluorescence intensity tests demonstrated that the coatings had an excellent ability to absorb and convert ultraviolet light into blue-violet light. Both cold-warm and hot-vapor tests showed that the coatings had excellent antifogging performance. To our surprise, no creases were observed after coatings were immersed in water for 1 month, indicating that these are much stronger than those reported so far. The 8H pencil hardness and wear resistance attested to their excellent mechanical properties. The current preparation method can be operated at ambient temperature and is not restricted by the substrate type and shape. Therefore, it may also expand the possibilities for future applications of coatings for glass windows, optical microscopes, eyeglasses, agricultural greenhouses, and so on.
研究领域:
材料科学
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纳米技术
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涂层技术
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产品关联
DOI
PubMed
高影响因子
Coatings
·
2025
·Vol. 15
·期 8
·936
·
IF 2.8
Weibiao Zhu,Jinxin He,Xia Dong
Transparent coatings with superwetting properties (superhydrophilicity or superhydrophobicity) have broad application prospects. Usually, most studies have been carried out separately on superhydrophobic coatings or superhydrophilic coatings. In our work, superhydrophilic transparent coatings were prepared by the four-mercapto and four-polyethylene glycol monomethyl acrylate modified POSS (POSS-(SH)4-(PEGMA)4) (designated as I-coating) as well as superhydrophobic transparent coating (designated as O-coating) were prepared with the mercapto and seven-heptyl decafluoroheptyl acrylate modified POSS (POSS-SH-(DFMA)7). The similarities and differences in anti-fogging, stain resistance, self-cleaning and anti-biological application between superhydrophobic and superhydrophilic coatings were compared systematically. The results show that superhydrophilic coatings performed better at preventing fog and facilitating self-cleaning; nevertheless, superhydrophobic coatings exhibited superior efficacy in the removal of contaminants such as markers and lipsticks. Both superwetting coatings demonstrated proficiency in self-cleaning and in deterring biological adhesion with respect to low-viscosity oil droplets. The relevant research of this paper provided a reference for the subsequent study on the advantages and disadvantages of superhydrophilic and superhydrophobic as well as its specific application.
研究领域:
材料科学
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表面工程
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纳米技术
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涂层技术
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高分子科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Jingyang Xu,Pengpeng Lu,Jie Zhao,Xin Zhao,Weijun Tian,Weihua Ming,Luquan Ren
Dual functional coatings with anti-fog and antimicrobial performances greatly enhance the safety and reliability of medical detection devices, but are prone to mechanical damage, resulting in reduced performance and a shorter service lifespan. Herein, a semi-interpenetrating polymer network (SIPN) coating, featuring hydrophobic-hydrophilic balanced copolymers as bulk chains and host–guest inclusion compounds (HGICs) as cross-linkers, is reported, which demonstrates particularly effective anti-fog and antibacterial performances, along with a surprisingly fast self-healing capability under various scenarios. This HGIC-based coating displayed remarkable anti-fog capability over a wide temperature range from −20 ℃ to 85 ℃ and exhibited reliable antibacterial activities (≥98 %) against both gram-positive and gram-negative bacteria. Also, this coating showed extremely high self-healing ability (≥92 % recovery rate) within just 20 s, significantly outperforming traditional self-healing systems. These findings support the development of functional coatings that can highly maintain rapid self-healing performance while also providing anti-fog and antibacterial properties in medical detection devices.
研究领域:
材料科学
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生物医学工程
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高分子化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Macromolecular Science Part B-Physics
·
2023
·
IF 1.4
Yueyue Rui,Bingyan Yu,Yun Liu,Lihu Fu,Jie Liu,Gang Lu
Hydrophilic coatings were prepared by dip-coating bare glass in polyvinylpyrrolidone (PVP)/silicon dioxide (SiO2) or polyvinylpyrrolidone (PVP)/carboxybetaine acrylamide (CBAA) suspensions. The effects of surface wettability on the anti-fogging and anti-icing properties of the two coatings were investigated. The surface morphologies of the coatings were characterized by polarized light microscopy and laser confocal microscopy, and the hydrophilicity of the coatings depended on the binding capacity of the hydrophilic functional groups in the fillers with water. The wettability of the coating surface was characterized by contact angle measurements, and it improved with increasing filler content. The coatings with the addition of more than 80 wt % of SiO2 or 1 wt % of CBAA showed superhydrophilic behavior. The anti-fogging and anti-frosting test results showed that the two coatings successfully prevented the development of fog and frost. The anti-icing properties of the coatings were also characterized. At three different temperatures, the anti-icing performance of the CBAA coating was better than that of the SiO2 coating. For, instance, at −15 °C, the icing delay time of PVP/SiO2 coating was 306.7 s and that of PVP/CBAA coating was 630.0s. Thus, the icing time of the CBAA coating was 323.3s longer than that of the SiO2 coating. When less than 80 wt% SiO2 or 10 wt% CBAA was added, the coating had good transparency.
研究领域:
材料科学
·
表面工程
·
高分子科学
·
纳米技术
·
涂层技术
✓ 已验证
DOI
高影响因子
Advanced Optical Materials
·
2023
·Vol. 11
·期 7
·2202287
·
IF 9
Jie Liang,Hao Wang,Tao Hu,Chao Shan,Qing Yang,Chengjun Zhang,Tongzhen Yang,Zheng Fang,Xun Hou,Feng Chen
Fog generation can severely damage optical systems by degrading the light absorption rate and imaging quality of optical components. Furthermore, fog can reduce the light flux and transmittance of the optical system, resulting in poor imaging clarity and contrast. Studies have focused on minimizing fog formation and effects. Drawbacks such as high energy consumption and waste pollution severely limit the application of conventional methods. However, achieving high fog resistance of optical components remains a challenge. A novel method of fabricating anti-fogging slippery surfaces (inspired by the anti-fog mechanism of the mammalian cornea) on silica glass by using femtosecond lasers is proposed to achieve durable and environment-friendly optical devices that can achieve anti-fogging in real time. The femtosecond laser wet etching method is used to fabricate the inside cabin of glass. The cabin filled with graphene spontaneously heats the sample under sunlight to prevent fog formation. In addition to exhibiting excellent anti-fogging characteristics, the prepared sample achieves high optical transmittance, high durability, and excellent self-repair capability. Thus, the proposed method exhibits considerable potential for application in numerous domains.
研究领域:
材料科学
·
光学
·
激光工程
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
Collagen and Leather
·
2024
·Vol. 6
·期 1
·1-10
·
IF 0
Pan Siyu,Liu Demeng,Sun Xianchong,Hou Delong,Yan Jun,Zeng Qi,Chen Yi
The global scenario on PVC plasticizer is experiencing a drastic change from petroleum-based, toxic di-(2-ethylhexyl) phthalate (DEHP) toward renewable, non-toxic bio-alternatives. However, replacing diisodecyl phthalate (DIDP), a DEHP analogue specifically intended for plasticizing PVC automotive upholstery, with bio-alternative remains a challenge as few bio-plasticizer volatilizes from PVC as slowly as DIDP, a crucial aspect compulsorily required by automotive industry. Here, we demonstrate that covalently attaching two short esters at the α -position of all components of a traditional epoxidized fatty acid methyl ester via a two-step, hydrogen-to-ester nucleophilic substitution in a one-pot procedure yields an epoxidized fatty acid tri-ester bio-plasticizer with remarkably suppressed volatilization from PVC, and hence an extremely low fogging value comparable to DIDP. With this strategy in hand, DIDP, long deemed irreplaceable despite its toxicity and non-renewable nature, may ultimately be phased out. Graphical Abstract
研究领域:
高分子材料
·
绿色化学
·
汽车工业
✓ 已验证
DOI
MATERIALS CHEMISTRY AND PHYSICS
·
2025
·
IF 4.7
Xinyu Han,Bo Yang,Wanqi Chen,Ruolan Tang,Song Li,Haile Yan,Liang Zuo
Solar-driven interfacial water evaporation desalination has emerged as a promising approach to address the global freshwater scarcity. However, fogging on transparent plates caused by condensation during freshwater collection obstructs light transmission, thereby reducing evaporation efficiency. To overcome this challenge, in this work, we integrated a super-hydrophilic TiO 2 –SiO 2 composite coating onto the transparent glass plates used in the solar-driven interfacial water evaporation desalination system. We systematically optimized the TiO 2 to SiO 2 ratio and synthesis process, and analyzed their anti-fogging performance as well as the photo-induced hydrophilicity mechanisms. The TiO 2 –SiO 2 composite coatings demonstrated remarkable effectiveness in suppressing fogging and enhancing system performance. Notably, the TiO 2 -60 % coated sample exhibited outstanding properties, achieving a water contact angle (WCA) of 2.1° after illumination. Even after 30 days of dark storage, the WCA increased only modestly to 27.8°, but rapidly recovered to a super-hydrophilic state of 7.9° upon re-exposure to light. Additionally, the coating maintained an average transmittance of 92.31 % across the 400–1100 nm wavelength range, surpassing that of bare glass (91.58 %) and ensuring optical clarity throughout a 108-h simulated solar evaporation test. This study not only establishes a theoretical framework for designing self-cleaning anti-fog coatings but also introduces innovative strategies to enhance the efficiency of solar-driven water evaporation technologies.
研究领域:
材料科学
·
环境工程
·
可再生能源
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）