ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 31
·2303306
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IF 19
Weicheng Gao,Jie Chang,Xueping Li,Sidi Li,Yuwei Zhou,Xin Hou,Lixia Long,Jin Zhao,Xubo Yuan
With the emergence of various hydrogels with excellent functions, the air-drying of hydrogels has attracted extensive attention. Improving the water retention capacity is critical in the application of hydrogels. Herein, inspired by the dense aggregation structure of natural hydrophilic macromolecules, hydrophilic substances (gelatin and glycerol) are first applied to enhance the water retention capacity of hydrogels by constructing a quenched double-hydrophilic coating. The weight retention ratio of the modified hydrogels is increased to 72.5% at 25 °C and 40 RH% after 5 days. Furthermore, the construction of hydrophilic coating on the surface does not affect the mechanical properties, and the modified hydrogels still retain strong water retention capacity after loading. In addition, this approach is applicable to hydrogels with different shapes and types, and various materials can be selected. Therefore, the proposed method provides new insights for expanding the application scope and service life of hydrogels.
研究领域:
材料科学
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生物医学工程
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产品关联
DOI
高影响因子
Journal of Coatings Technology and Research
·
2022
·Vol. 19
·期 6
·1655-1664
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IF 2.339
Li Aiai,Gu KaiFeng,Zheng Honglin,Zhou Yong,Gao Congjie
Polypropylene microporous membranes (PPMMs) have a broad range of applications owing to their outstanding performances and low cost. However, PPMMs are highly hydrophobic and the water permeability is terrible, which enormously obstructs the applications of PP membrane in water treatment. In this work, PPMMs are modified by a chemical crosslinking method, and a crosslinked hydrophilic coating layer is formed on the membrane surface, which greatly improves the hydrophilicity and permeability of the PP membrane. The water flux of the modified membranes is about 350 L·m −2 ·h −1 (the pressure of 0.2 MPa). The water contact angles are reduced to about 10°, and compared to unmodified membranes, it is reduced by 90°. Meanwhile, the flux repeatability experiment of the modified membrane proves that the crosslinking agent improves the stability of the membrane. X-ray photoelectron spectroscopy, scanning electron microscopy (SEM), and Fourier-transform infrared (FTIR) spectrometer are employed for the characterization of chemical properties and morphological variances of original and modified membrane surfaces. The results exhibit that the groups such as C–O, O=C–O, and O–C–O are introduced successfully to the PP membrane surface.
研究领域:
材料科学
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环境工程
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DOI
高影响因子
Journal of Saudi Chemical Society
·
2019
·
IF 2.759
Hailong Zhang,Gailan Guo,Libin Liu,Furong Tao,Jinping Ren,Liang Zheng
A simple, economical, and efficient method for fabricating stable hydrophilic/underwater superoleophobic coating under harsh conditions remains a significant challenge. Here, by the hydrolysis of 3-(Methacryloyloxy) propyltrimethoxysilane (TMSPMA) on cotton fabric and the free radical polymerization of [2-(Methacryloyloxy) ethyl] dimethyl-(3-sulfonic acid propyl) ammonium hydroxide (SBMA) and TMSPMA, a superhydrophilic coating was fabricated. The coating can withstand harsh environments, such as strong acid and alkali. In addition, the coated cotton fabrics show an effective separation of surfactant-stabilized oil-in-water emulsions with extreme flux as high as 1500 Lm −2 h −1 only under gravity. Importantly, the oil-contaminated coated cotton fabrics can be cleaned only by water washing. The outstanding properties of the coating including durability, recyclability and resistance to harsh environment, highlight its practical application in emulsion separation and oily wastewater purification.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Jiazhuo Huang,Junwei Wu,Jiaqi Wu,Daohua Sun
Superhydrophilic materials, renowned for their capacity to establish a hydration layer that effectively mitigates oil pollution, have garnered considerable attention for oil–water separation. However, these materials have difficulties in separating water from high-viscosity oils, which can easily adhere to the surfaces of the materials, resulting in reduced separation efficiencies. In this work, a superhydrophilic wood-based cellulose aerogel coated with a protonated nanocomposite chitosan coating (PPNC-CS) was proposed to enhance water affinity and prevent viscous oil adhesion. The separation efficiency of the prepared cellulose aerogel@PPNC-CS reached an impressive 99.90% for high-viscosity crude oil and water. Notably, it exhibited an underwater–oil contact angle exceeding 160°, oil contamination prevention, and self-cleaning performances. These properties can be attributed to the presence of micronanoscale coating particles on the lamellar architecture of the cellulose aerogel@PPNC-CS, coupled with the formation of a robust hydration layer through electrostatic interaction and hydrogen bonding. Moreover, it exhibited enduring chemical stability, resistance to acid and alkali corrosion, and a notable capacity for high-concentration salt tolerance. This research introduces a promising material for the sustainable purification of aqueous viscous oils, offering low cost and environmental friendliness.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2025
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IF 7.3
Xinyu Yin,Kangquan Yang,Liying Liu,Yuanyang Yan,Pihui Pi,Zhang Lin,Xiufang Wen
Oil and gas transportation has been plagued by pipeline blockage caused by natural gas hydrates nucleation and crude oil adhesion . While traditional coatings with inhibitory functional groups can inhibit hydrate nucleation, but their inhibitory performance can be restricted by crude oil adhesion. Meanwhile, anti-crude-oil-coatings fail to inhibit hydrate nucleation owing to lack of inhibitory functional groups. Thus, how to coordinate the inhibition and anti-adhesion properties of coatings is a rigorou8s challenge. Moreover, for water-phase dominated pipelines, inhibitory performance of coatings will be inevitably weakened if the coatings cannot offer sufficient density of inhibitory functional groups. Here, we report a strategy for designing coatings with anti-hydrate-nucleation and anti-crude-oil-adhesion properties, which can be achieved by introducing hydrophilic inhibitory functional groups into the polymer polyethylene glycol and constructing micro-nanostructures by coating them with hydrophilic nano SiO 2 onto skeletons of porous Ni foam. Compared with uncoated Ni foam, the hydrate formation induction time of coated Ni foam was prolonged by 517.8 % and the adhesion force with crude oil was reduced by 93.3 %. The micro-nanostructures constructed by nano-SiO 2 and Ni foam increases the density of hydrophilic inhibitory functional groups and minimize the contact area with crude oil, which contribute to improve the anti-hydrate-nucleation and anti-crude-oil-adhesion performances of coatings. Molecular simulation and experimental results indicate that the hydrophilic inhibitory functional groups not only inhibit hydrate nucleation by disrupting the ordering of water molecules, but also repel crude oil by forming hydrated films . Therefore, this study offers an effective strategy for the development of coatings aimed at mitigating pipeline blockages caused by hydrates nucleation and crude oil adhesion.
研究领域:
材料科学
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能源工程
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产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Kai Sun,Xin Hong,Tianlu Yu,Zhecun Wang
Porous membranes with superhydrophilicity and underwater superoleophobicity have attracted considerable attention for efficient oil/water emulsion separation. However, such membranes fail to remediate severe oil contamination in long-term applications and exhibit a serious water flux decline. Herein, a universal combination strategy integrating the high coverage of a mussel-inspired sticky interlayer and a double rigid cellulose nanofiber-amorphous calcium carbonate (CNF-ACC) composite outer layer is proposed to prepare a superhydrophilic coating surface with superior anti-oil-fouling properties on diverse substrates. The introduction of the mussel-inspired interlayer not only provides a stable and complete coverage interface but also offers an anchor to fix the outstanding hydration of the outer CNF-ACC composite layer. The high-coverage and double rigid superior hydration CNF-ACC layer provides excellent anti-oil-fouling characteristics, irrespective of the type of oil, under various conditions, such as water-prewetted or oil-fouled environments. Owing to its superior anti-oil-fouling property, the coating-modified membrane shows efficient and long-term separation of diverse oil/water emulsions without significant flux decline and with a flux recovery ratio of nearly 100%. In addition, this coating exhibits antifogging and high transparency, which may show promising applications in diverse optical devices.
研究领域:
材料科学
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环境工程
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产品关联
DOI
PubMed
高影响因子
Coatings
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2025
·Vol. 15
·期 8
·936
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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
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产品关联
DOI
高影响因子
Journal of Macromolecular Science Part B-Physics
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2023
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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
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表面工程
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高分子科学
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纳米技术
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涂层技术
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Yixian Zhu,Guangrong Guo,Jinchuan Lu,Chengsong Ye,Yaqiang Xie,Yinghua Lu,Song Tu
Transparent substrates with anti-fogging properties endowed by surface hydrophilic modification have been proved to applied in various fields. In this study, a superhydrophilic coating (PAT coating) was generated on glass substrate via dip coating technique using a solution comprising polyvinyl alcohol (PVA), alkyl polyglycoside (APG1214), and tetraethoxysilane (TEOS). The plentiful hydroxyl groups present in PVA and APG1214 endow the PAT coating with high hydrophilicity for excellent anti-fogging and self-cleaning properties, and facilitate to form a stable homogeneous hydrogen-bonded crosslinked network. Meanwhile, the in situ generated tetraethoxysilane hydrolysate (TEOH) from hydrolysis of TEOS acts as a crosslinker, which can covalently connect the organic components to the glass substrate. As a result, the resulting PAT coating displays excellent stability during various mechanical and chemical durability tests. In addition, the coating exhibits antibacterial adhesion properties owing to the broad-spectrum antibacterial property of APG1214. Importantly, the PAT coating can be easily prepared with readily available and economical raw materials through a simple method under mild conditions that does not require complicated separation and purification, thereby enabling its potential industrial application.
研究领域:
材料科学
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表面化学
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生物医学工程
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产品关联
DOI
高影响因子
Biomaterials Science
·
2025
·
IF 5.7
Zhenqing Li,Jiawei Li,Lei Qian,Ye Tian,Haoyu Jin,Peng Yu,Zhengao Wang,Chengyun Ning,Jinxia Zhai
Prolonged indwelling of ureteral stents often leads to encrustation, which can cause functional failure and poses a significant clinical challenge. Zwitterionic polymers exhibit excellent anti-fouling performance due to their strong surface hydrations. Inspired by this, a multifunctional hydrogel coating based on a trimethylamine N-oxide zwitterionic polymer was developed for polyurethane stents to mitigate encrustation. The coating was fabricated using an innovative approach that combines superwetting-assisted interfacial polymerization strategy with dip coating technology, significantly improving the adhesion strength between the coating and the stent surface to ensure long term stability. Notably, the coating strongly interacts with water molecules to form a robust hydration layer, effectively inhibiting bacterial adhesion. In a 90-day simulated urinary flow test, the coating demonstrated outstanding anti-encrustation performance, reducing encrustation by 92%, while maintaining excellent biocompatibility. This coating technology provides an effective and durable solution for preventing complications associated with ureteral stents and shows broad application potential in the field of urological medical devices.
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
·
2025
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IF 1.9
Yunwu Yu,Bin Jiang,Yong Yuan,Junhai Wang,Yanfeng Fang,Ting Li,Xiangyu Li,Xiaowei Sun
In this work, an environmentally friendly copolyester with water dispersibility is used as the base material. After the incorporation of a curing agent and a silane coupling agent as additives, a superhydrophilic coating was successfully prepared. The resulting mixed solution was applied to substrates using a spraying technique, followed by thermal curing to achieve the desired superhydrophilic properties. The physical and chemical characteristics of the superhydrophilic coating were thoroughly characterized and evaluated. The results demonstrate effective modification of the coating. Water droplets spread completely across the coating surface within 1 s, achieving a contact angle of less than 10°. The coating exhibited outstanding physical and chemical performance in various tests, including impact resistance, hardness, high-temperature resistance, water resistance, and UV aging. Furthermore, the coating demonstrated good adaptability and stability on different substrates. It could be directly applied to surfaces such as iron sheets, PET film, glass, and glass slides. In this study, iron sheets were selected as the substrate for the superhydrophilic coating to ensure that the mechanical property testing requirements of the coating could be adequately met. The superhydrophilic coating prepared in this paper has superhydrophilicity (water contact 6.384°), high light transmittance, stability and self-cleaning function, and has great application potential in hydrophilic modification of PET films, coating of multifunctional medical equipment, etc.
研究领域:
材料科学
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表面工程
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高分子化学
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生物医学工程
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纳米技术
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功能涂层
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2025
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IF 4.7
Bohan Yin,Fuying Pei,Hongge Jia,Yutong Shan,Mingyu Zhang,Shuangping Xu,Yanqing Qu
Due to the frequent occurrence of marine oil spill accidents, the ecological environment is facing severe threats. However, some traditional oil-water separation methods suffer from issues such as high cost, environmental unfriendliness and low efficiency. Therefore, there is an urgent need to develop a simple and efficient oil-water separation membrane. Leveraging the non-toxicity and abundance of hydrophilic groups (such as -carboxyl and -OH) in tannic acid, this study, for the first time, forms a hydrophilic coating on the surface of polyimide membrane (PI) through the complexation of tannic acid with ferric chloride hexahydrate, thus fabricating a superhydrophilic/superoleophobic membrane for oil-water separation. The water contact angle (WCA) of the modified membrane drops to 0° within 5 s, while the underwater oil contact angle (UOCA) reaches up to 142°. Moreover, under the action of gravity, the membrane not only achieves a high water flux of 2100 L·m -2 ·h -1 but also attains a removal rate of over 90 % for various oil-in-water emulsions. In addition, the modified membrane exhibits excellent resistance to acids, alkalis, and salts, as well as outstanding oil-fouling resistance. This promising material offers a universal modification strategy with broad applications in wastewater treatment.
研究领域:
材料科学
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环境工程
·
膜技术
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表面改性
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化学工程
✓ 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）