COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
·
IF 5.4
Yue Feng,Xun Liu,Jingyi Wang,Xinyu Zou,Dianlin Wang,Lei Xie
Nanostructures have been commonly incorporated into oil-water separation membranes to improve their antifouling properties. However, the antifouling mechanism of the membrane with different nanostructures is still unclear. In this work, ZnO nanostructures, i.e., nanorods, hollow nanorods and randomly assemble nanosheets, were constructed on polyvinylidene fluoride (PVDF) membrane surfaces. The resulted membranes exhibited improved antifouling properties in comparison with the pristine PVDF membrane, and the hollow nanorods showed the best antifouling property. The antifouling mechanism was investigated through direct force measurements between oil drops and membrane surfaces using atomic force microscopy. The theoretical analysis of approach force curves indicated that the repulsive electrical double layer force was enhanced at higher pH and in the presence of ZnO nanostructures, which prevented the oil attachment on the membrane surface. The retraction force curves suggested that the adhesion between oil and membrane was significantly affected by the ZnO nanostructures, and the adhesion followed the trend of hollow nanorods < randomly assemble nanosheets < nanorods. Consequently, the oil drops on the membrane with hollow nanorods could be easily removed by water rinsing, which agreed with the flux recovery results. This work provided a fundamental understanding of the antifouling mechanism of the oil-water separation membranes with nanostructures, and a useful guidance for constructing suitable surface structures for efficient oil-water separation membranes.
研究领域:
材料科学
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环境工程
·
表面化学
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产品关联
DOI
高影响因子
DESALINATION
·
2022
·
IF 11.211
Guangze He,Zheng Li,Yuxiao Liu,Meijun Liu,Chuntao Zhu,Lanhe Zhang,Haifeng Zhang
Effective modification strategies contribute to high adsorption capacity , separation efficiency and anti-fouling properties of ion-imprinted membranes. The design of a homogeneous and hydrophilic interlayer between the substrate membrane and ion-imprinted layer is crucial factor for the excellent performance of ion-imprinted membranes. In this study, a novel multilayered interlayer (SiO 2 @SP-PDA) was developed and uniformly coated on the substrate surface (PVDF membrane). The polydopamine (PDA) prepared via oxidation of sodium periodate (SP-PDA) increases the uniformity of SiO 2 @SP-PDA modification, which reduces the agglomeration of the ion-imprinted layer, and thereby boosts the adsorption capacity to 231.77 mg·g −1 . The prepared ion-imprinted membrane (SiO 2 @SP-PDA-IIM) exhibits a favorable anti-fouling property due to the incremental hydrophilicity and the presence of SiO 2 nano interlayer. Based on the XDLVO theory, it can be deduced that the SiO 2 modification increases the membrane surface electron donor tension (γ − ), which plays an essential role in enhancing the anti-fouling property of SiO 2 @SP-PDA-IIM. In this paper, the design of multilayered structure is of great significance to make the ion-imprinted membrane be a potential candidate for Li + efficient separation in natural water.
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
SOLAR ENERGY
·
2020
·
IF 4.608
Jing Zhang,Ling Ai,Yunfei Xu,Xueqin Lou,Pinjun Lan,Yuehui Lu,Ning Dai,Weijie Song
Silica-based antireflection coatings (ARCs) used in photovoltaic (PV) modules often encounter soiling problems, which has been recognized as one of the most serious problems degrading the power output of PV modules. In this work, four kinds of silica-based ARCs were prepared to investigate the effects of surface morphology and chemistry on their anti-soiling properties under Ningbo’s climate. To reveal the influences of surface morphology, hollow silica nanoparticle (HSN)- and solid silica nanoparticle (SSN)-based ARCs were prepared and compared. To understand the surface chemical effects, we comparatively studied the soiling behavior of hydrophilic and hydrophobic HSN ARCs postmodified with methyl and fluorinated groups (named CH 3 -HSN and F-HSN, respectively). After half-year field tests, we found that the HSN ARCs with a rougher surface exhibited better anti-soiling performance than the SSN ARCs. On the other hand, the hydrophilic ARCs showed better soiling resistance than the hydrophobic controls because of the role of rain cleaning in the soiling mitigation of the hydrophilic samples installed at a moderate tilt angle under a typical coastal climate. Comparing the hydrophobic samples modified with methyl and fluorinated groups, the former was superior to the latter in both laboratory and outdoor tests because of the larger adhesion force between contaminants and the surface in the fluorinated-HSN ARCs. These findings provide constructive guidance for the applications of silica-based ARCs in PV modules installed in coastal areas, which is the key to maximizing the power output of PV modules in practice.
研究领域:
材料科学
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能源科学
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产品关联
DOI
高影响因子
RSC Advances
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2016
·Vol. 6
·期 65
·60530-60536
·
IF 3.289
Daoyi Jiang,Zhixiong Liu,Jin Han,Xuedong Wu
We reported a series of tough nanocomposite hydrogels with good antifouling properties based on quaternized hybranched polyethylenimine (HPEI) nanoparticles. The quaternized HPEI nanoparticles acted as both cross-linkers to produce tough hydrogels and antibacterial agents to prevent fouling attachments. Compared with the polymer hydrogel, these nanocomposite hydrogels exhibited significantly improved mechanical properties. The mechanical strength of the nanocomposite hydrogels had a strong dependence with proportion of the quaternized HPEI nanoparticles. Furthermore, the anti-algae/bacterial assay indicated the nanocomposite hydrogels showed better antimicrobial and anti-algae performances due to the broad spectrum antimicrobial activity of Quaternary Ammonium Salts (QAS) functional groups.
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
EUROPEAN POLYMER JOURNAL
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2023
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IF 6
Susu Zhao,Dejin Zhang,Yujie Jiang,Chuanhui Gao,Lei Liu,Yuetao Liu
Nowadays, the development of sustainable nontoxic antifouling coatings is urgent. In this work, the isobornyl as antifouling groups and dodecfluoroheptyl were introduced into the silicone side chains to prepare the environment-friendly silicone antifouling coatings. The synergistic effect of natural borneol and dodecfluoroheptyl improved the static antifouling ability of silicone coating. The coatings exhibited good optical clarity (>92%, 400–800 nm), high adhesion (>2 MPa, steel plates) and excellent fouling release and self-cleaning ability. For example, PDMS-F-PIBO-23 coating had excellent antibacterial and antifouling activities. It’s antibacterial resistance to marine bacteria (Pseudomonas sp.) reached 95.6%, which reduced the coverage area of biofilm by 86.9%, and effectively prevented the adhesion of diatoms. This remarkable antibacterial and antifouling performance was attributed to the complex molecular structure of natural non-toxic borneol and the enrichment of fluoropolymers. Field tests at Yellow Sea showed that the coating had good antifouling ability and could be used for >6 months. Most importantly, compared with traditional coatings containing toxic fungicides, the coating is less harmful to the marine ecological balance. This research provides more possibilities for marine antifouling coatings design and preparation which is expected to be applied in marine, medical and other antipollution fields.
研究领域:
材料科学
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海洋生物学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Chengyu Hong,Jiawei Li,Jiaqi Zhang,Ruixue Zhai,Bin Fei,Chao Zhou
Inferior water resistance remains a bottleneck in the development of the waterborne polyurethane (WPU) coatings industry . Herein, a novel strategy for the facile preparation of hydrophobic antifouling WPU coatings is presented in this work. Specifically, a series of siloxane-branched modified polyurethanes (BSi-WPU) was prepared by synergistically introducing diol-hydroxyl single-ended silicone oil (DSSiO) as the branched modified monomer and hydroxylated fluorinated siloxane (HTFSi) as the functional soft-chain segment into the WPU system via a simple polycondensation process. The effects of the introduction of DSSiO on the water resistance and mechanical properties of the BSi-WPU were investigated, and the antifouling and chemical resistance of the modified coatings were also examined. The results demonstrated that the branched DSSiO possessed excellent surface migration efficiency, which effectively improved the water repellence (contact angle up to 109.3°), waterproofness (absorption reduced to 7.5 %), and hydrolysis resistance (minimum 1.6 % loss of strength after water immersion) of the coatings. In addition, owing to thermodynamic immiscibility, the incorporation of HTFSi and appropriate DSSiO amounts enlarged the microphase separation of the polyurethane , whereby the material exhibited improved mechanical properties over ordinary polyurethanes. More importantly, based on the surface enrichment of low-surface-energy silicon and fluorine units, the coatings exhibit excellent repellency to contaminated liquids and corrosive chemical solutions. This approach provided a more applicable alternative idea to the industrial fabrication of hydrophobic and antifouling WPU coatings.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
Surfaces and Interfaces
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2024
·
IF 5.7
Jingyu Xu,Yuhong Qi,Zhanping Zhang
This paper presents an efficient and environmentally friendly antifouling coating that does not release toxic substances or damage marine ecology. In previous work, a novel of poly(dimethyl-methylphenyl-methyltrifluoropropyl)siloxane (PDPFS) was prepared. The excellent antifouling performance of PDPFS coating relies entirely on the wash of water flow, thus its static antifouling ability is limited. Silicone oil (SO) is introduced into PDPFS coating to further enhance its antifouling ability. Three SOs with the same viscosity are selected, namely methyl silicone oil (MSO), fluorosilicone oil (FSO) and phenyl silicone oil (PSO). According to thermodynamic analysis, none of three SOs are compatible with PDPFS, which is the basis for SOs to leach out from the PDPFS coating. Through kinetic analysis, SO can undergo phase separation and aggregation within the cured PDPFS coating. Then, three SOs are leached to the coating surface through interface gaps between cross-linked bodies by capillarity. Due to the different wettability of SOs on PDPFS coating, MSO and PSO leach upwards while FSO leaches downwards. The upward leaching of SO forms an oil film that prevents marine fouling organisms from firmly adhering, and even if they adhere, they can easily be removed from the surface together with SO under external forces. According to the antifouling performance test results, the antifouling efficiency of PSO/PDPFS coating is superior to that of MSO/PDPFS and FSO/PDPFS coating, and it increases from 23.39 % to 84.89 % with increasing O/P.
研究领域:
材料科学
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海洋生物学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Shixin Lu,Zhaopeng Cai,Yuheng Lu,Youchen Tang,Jiapeng Song,Jiajun Huang,Ziying Cheng,Dingcai Wu,Peng Wang
Growing hydrogel coatings in a controlled manner exhibits promising potential for various applications, but lacks a universal method especially from polymer precursors. Herein, we propose a facile yet effective strategy to controllably grow various types of hydrogel coatings, either from polymers or monomers, on diverse polymer substrates via Fenton reaction. By immersing the pretreated polymer substrate in the given precursor solution, peroxide adsorbed into/on the substrate surface and Fe 2+ in the solution trigger continuous Fenton reaction at the solid–liquid interface to drive polymer chains interlinking to the substrate and crosslinking into a network synchronously. Furthermore, due to the high viscosity of the newly formed hydrogel, radicals are confined close to the interface by diffusion, which not only allows for precise control over the coating thickness but also enables the reutilization of precursor solution. As proof of concept, our method is successfully applied to produce hydrogel coatings with adjustable micron-scale thickness, impart excellent low-friction and antifouling properties to polymer substrates, and manipulate a series of fine hydrogel patterns. Therefore, this work presents a pioneering universal approach for growing hydrogel coatings on various polymer surfaces and implies significant potential applications.
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
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Tianlong You,Guixuan Guo,Wenbo Li
The aqueous formulation of antismudge coatings is a crucial step for environmental protection and pollution reduction. However, the inferior mechanical durability of waterborne antismudge coatings poses challenges for their practical application. Herein, we developed a fully waterborne antismudge coating with excellent scratch resistance by preparing hyperbranched amine-rich polysiloxane (HySPx) for antismudge ability and epoxy-rich zirconium-based aqueous solution (ZAS) for mechanical performance. The former is obtained by combining SPx, polydimethylsiloxane modified by 3-isocyanatopropyltriethoxysilane (IPTS), with 3-aminopropyltriethoxysilane (KH550), and the latter is synthesized using zirconium propoxide solution (TPOZ) with 3-glycidyloxypropyltrimethoxysilane (KH560). This report investigates the effects of the chain length and content of SPx on the performance of the coating. The results indicate that the coating exhibits optimal comprehensive performance when the molecular weight of polydimethylsiloxane is 4.5 kDa, and the mass fraction of SPx in HySPx is 1.5%. The coating possesses high transparency similar to glass, good adhesion (≈3 MPa) to various substrates, high hardness (8H), flexibility (2.5 mm bending radius), and exceptional antismudge property. More importantly, the coating can still maintain excellent antismudge property even after enduring 400 cycles of abrasion with steel wool. Furthermore, the rapid enrichment of polydimethylsiloxane on the coating surface endows the coating with excellent lubrication ability, allowing most common liquid stains to slide off the coating surface. Moreover, the rewritability of the coating remains stable even after writing traces that have persisted on its surface for several weeks. This coating is anticipated to be utilized for protecting foldable electronic screens, vehicles, and other fields.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Biomaterials Science & Engineering
·
2020
·
IF 4.152
Wancheng Zhu,Liu Jiang,Bulei Wang,Shunli Gu,Fenyan Hu,Changhao Wang,Yashao Chen
Polylactic acid (PLA) is one of the biodegradable materials that has been used in the areas of surgical healing lines, cancer treatment, and wound healing. However, the application of PLA is still rather limited due to its high hydrophobicity and poor antibacterial activity. In order to enhance the antifouling and antibacterial performances of PLA, here we modified the surface of PLA with various sizes of hydrogel micropatterns in negative or positive mode using plasma treatment, the photomask technique, and UV-graft polymerization. The hydrogel micropatterns consist of poly(ethylene glycol) diacrylate (PEGDA), poly(2-methacryloyloxyethylphosphorylcholine) (PMPC), and poly(methacryloyloxyethyltrimethylammonium chloride) (PDMC). Compared to PLA, the patterned PLA (PLA–PMPC/PDMC/PEGDA) shows obviously enhanced antifouling and antibacterial activities. For PLA–PMPC/PDMC/PEGDA with either positive or negative micropatterns, the antifouling and antibacterial properties are gradually increasing with decreasing the size of micropatterns. Compared with PLA–PMPC/PDMC/PEGDA bearing positive and negative micropatterns in the same size, the PLA–PMPC/PDMC/PEGDA with negative micropatterns exhibits slightly better biological activity and the PLA–PMPC/PDMC/PEGDA with 3 μm negative hydrogel micropatterns shows the best hydrophilicity, antifouling, and antibacterial properties. Combining the in vitro hemolysis assay, cytotoxicity, water absorption test, and degradation test results, it is suggested that the fabrication of hydrogel micropatterns onto the PLA surface could significantly improve biological activities of PLA. We expect that this work would provide a new strategy to potentially develop PLA as a promising wound dressing.
研究领域:
材料科学
·
生物医学工程
·
组织工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Jiasheng Wang,Ni Hui
A simple electrochemical patterning strategy has been developed for the construction of ultrasensitive biosensors based on polyethylene glycol (PEG)-polypyrrole (PPy) nanowires substrate in order to supply improved antifouling performances. PPy nanowires array was produced through electrochemical polymerization of pyrrole at constant potential onto glassy carbon electrode (GCE) surface. PPy nanowires surfaces were decorated with 4-armed PEG molecules by electrochemical oxidation of amine groups offered by PEG end chains. The prepared PEG/PPy nanowires have integrated the excellent electrical conductivity of conducting polymer PPy nanowires with the good antifouling property of PEG. MicroRNAs (miRNAs) play very important roles in cancer development and a variety of diseases, which make them become promising biomarkers of the onset, prognosis and risk of diseases. Therefore the establishment of miRNA profiles for diseases and the detection of miRNAs in biological samples are critical milestones in diagnostics. An ultrasensitive electrochemical biosensor for miRNA can be effortlessly developed by the immobilization of DNA probes onto PEG/PPy nanowires. DNA/RNA hybridization was monitored by changes of methylene blue (MB) redox signal using differential pulse voltammetry (DPV) method. A wide linear range (0.10 pM ∼ 1.0 nM) to target miRNA was obtained by the fabricated biosensor, and miRNA mismatches can also be easily identified with satisfactory. Furthermore, the biosensor based on PEG/PPy nanowires can be extended to the development of any type of DNA-based biosensor.
研究领域:
生物传感
·
分子诊断
·
电化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 12
·5806-5818
·
IF 3.925
Xiaoxue Lin,Jianjun Shi,Zaifeng Shi,Satomi Niwayama
Surface-initiated ring-opening metathesis polymerization (SI-ROMP), based on the design of hydrophobic and antifouling monomers, was employed for the synthesis of grafting-modified graphene oxide (GO). The activity of copolymerization was investigated with the use of fluorinated norbornenes (NBFn) and polyethylene glycol-substituted norbornenes (Nb-PEG) as monomers in the presence of Grubbs 2nd generation catalyst in the solution conditions. These copolymerization conditions were applied to the modification of GO by SI-ROMP, and the polynorbornene-functionalized GO (GO-pNBFn-pNb-PEG) was obtained from the active catalyst sites on the GO surface. The results indicated that fine copolymerization activity was achieved under the molar ratio of 175 : 25 : 2 (NBFn : Nb-PEG : catalyst), whereas the activity of ROMP was decreased obviously with the increase of the Nb-PEG ratio and the side-chain length of the PEG groups. The modified GO retained the intercalated layer structure, and the growth of the polymers led to the decreased layer spacing. The grafting ratio could reach 37% by controlling the monomer concentration of 0.1 g mL−1 : 0.016 g mL−1 (NBFn : Nb-PEG) and polymerization time (t1 = 45 min and t2 = 90 min) under the mild reaction conditions. The grafted polymer films improved the dispersibility of GO in organic solvents and the contact angle of GO-pNBF10-pNb-PEG550 could reach 128°. The protein resistance of the modified GO had better anti-adsorption ability towards large molecular weight proteins.
研究领域:
材料科学
·
化学工程
·
生物材料
✓ 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）