APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Ke Sun,Huan Yang,Wei Xue,An He,Dehua Zhu,Wenwen Liu,Kenneth Adeyemi,Yu Cao
Anti-biofouling technology is based on specifically designed materials and coatings. This is an enduring goal in the maritime industries, such as shipping, offshore oil exploration, and aquaculture. Recently, research of the relationship between wettability and antifouling effectiveness has attracted considerable attention, due to the anti-biofouling properties of the lotus leaf and shark skin. In this study, super-hydrophobic surfaces (SHSs) with controllable periodic structures were fabricated on AISI304 stainless steel by a picosecond laser, and their anti-biofouling performance were investigated by seawater immersion for five weeks in summertime. The results showed that the specimens with SHS demonstrate significant anti-biofouling effect as compared with the bare stainless steel plate. We observed that nearly 50% decrease of the average microbe attachment area ratio (Avg. MAAR) could be obtained. The micro-groove SHS with more abundant hierarchical micro-nano structures showed better anti-biofouling performance than the micro-pit SHS.
研究领域:
材料科学
·
海洋工程
·
表面工程
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DOI
高影响因子
Polymers
·
2021
·Vol. 13
·期 4
·573
·
IF 4.329
Kejiao Li,Yuhong Qi,Yingju Zhou,Xiaoyu Sun,Zhanping Zhang
Polyurethane has a microphase separation structure, while polyethylene glycol (PEG) can form a hydrated layer to resist protein adsorption. In this paper, PEG was introduced to polyurethane to improve the antifouling properties of the polyurethane, providing a new method and idea for the preparation of new antifouling polyurethane materials. The mechanical properties, hydrophilicity, swelling degree, microphase separation and antifouling performance of the coatings were evaluated. The response characteristics of the polyurethane coatings in a seawater environment were studied, and the performance changes of coatings in seawater were tested. The results showed that the crystallized PEG soft segments increased, promoting microphase separation. The stress at 100% and the elasticity modulus of the polyurethane material also markedly increased, in addition to increases in the swelling degree in seawater, the water contact angle decreased. A total of 25% of PEG incorporated into a soft segment can markedly improve the antibacterial properties of the coatings, but adding more PEG has little significant effect. After immersion in seawater, the coatings became softer and more elastic. This is because water molecules formed hydrogen bonding with the amino NH, which resulted in a weakening effect being exerted on the carbonyl C=O hydrogen bonding and ether oxygen group crystallization.Keywords:poly(ethylene glycol)-segmented polyurethane coating;seawater immersion;microstructure;properties
研究领域:
材料科学
·
海洋生物学
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产品关联
DOI
PubMed
高影响因子
Advanced Healthcare Materials
·
2025
·
IF 9.6
Kaili Liu,Yanwen Su,Boyuan Wei,Xiaoyu Guo,Yabo Zhang,Songlin Wang,Sirui Zhang,Yuming Kang,Xiaojing Yu,Hui Zhu,Jiankang He
Marine open traumatic brain injuries (oTBI) face high infection risks due to seawater-borne pathogens, demanding dura scaffolds with dual antibacterial and osteogenic functions under seawater immersion. Conventional scaffolds lack this dual capacity. Here, a biomimetic triple-layer polycaprolactone (PCL)-based scaffold is developed. The cerebral-side electrospun layer incorporates gentamicin sulfate (GS) for antibacterial action, while the cranial-side electrohydrodynamically printed rhombic PCL layer contains nano-hydroxyapatite (nHA) to enhance osteogenesis. A middle GS/PCL electrospun layer reinforces mechanical strength. The PCL/GS/nHA scaffold demonstrates suitable mechanical properties, sustained GS release, and low hemolysis. After seawater immersion or direct S. aureus exposure, it maintains potent antibacterial efficacy and biocompatibility. Additionally, nHA promotes osteogenic differentiation of human bone marrow mesenchymal stem cells in vitro. This multi-functional scaffold combines seawater-resistant antimicrobial performance with osteogenic capacity, offering a promising solution for dura repair in marine environments.
研究领域:
生物材料学
·
海洋医学
·
组织工程学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2020
·
IF 5.162
Qi Fang,Zexin Yao,Longbao Feng,Tian Liu,Shikun Wei,Pengcheng Xu,Rui Guo,Biao Cheng,Xinlu Wang
Skin damaged during sea battles is vulnerable to seawater immersion and bacterial infection. Scaffolds with effective biological function are highly desired for treatment of naval combat wound injuries. Herein, we prepared composite scaffolds of CS/GEL/GMs-CIP. The chitosan (CS) and gelatin (GEL) were cross-linked by genipin as matrix, and then gelatin microspheres loading ciprofloxacin hydrochloride (GMs-CIP) were add. From in vitro characterization results, CS/GEL/GMs-CIP had high water absorption ability, proper porosity, satisfactory fracture resistance, and flexibility. Furthermore, CS/GEL/GMs-CIP composite scaffold had excellent biocompatibility. Antibacterial experiments confirmed that CS/GEL/GMs-CIP had a significant inhibitory effect on E. coli , S. aureus and P. aeruginosa . The in vivo wound healing was evaluated using animal wound infection model of seawater immersion, and it was observed that the prepared composite scaffolds accelerated wound healing, reepithelialization, collagen deposition. Further analysis of wound tissue indicated that the expression of anti-inflammatory factor (TGF-β1) was up-regulated, but the serum endotoxin levels and expression of pro-inflammatory factor (TNF-a, IL-6, and IL-1β) were down-regulated. In summary, we believe that CS/GEL/GMs-CIP composite scaffold may serve as a promising multifunctional dressing for healing with open trauma wound infections and wound with seawater immersion.
研究领域:
生物医学工程
·
材料科学
·
伤口愈合
·
感染控制
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2025
·Vol. 23
·期 1
·1-18
·
IF 12.6
Lei Rui,Wang Wenjun,Li Guan,Yu Qian,Fang Haowei,Xu Jinghong,Zhang Kunxi,Ye Yinghai
Seawater-immersed wounds can be threatened by high pH, high permeability and infection, which may lead to the development of chronic wounds. The present study develops an aggregation strategy for the rapid preparation of α -lipoic acid (LA)-based bioadhesives at room temperature with strong and underwater adhesion for emergency treatment of trauma in maritime activities. The bioadhesives are fabricated from the aggregation of LA, MXene and Ag + through their supramolecular interactions, which can be rapidly formed in mild environments, showing strong interface adhesion without adhesive failure caused by depolymerization, while exhibiting mechanical self-reinforcing. To further improve the adhesive strength, the formation of MXene/Ag + /LA interactions was integrated into poly(2-hydroxyethyl methacrylate) (pHEMA) electrospinning to manufacture electrospun film with the adhesion strength as high as 2 MPa. The bioadhesives are sensitive to alkaline environments and can lead to deprotonation of LA. The released H + can instantly adjust the pH of weakly alkaline seawater-immersed wounds to normal pH, while deprotonated LA is released into wounds to exert anti-inflammatory functions. Together with antibacterial property, bioadhesives applied to seawater-immersed wounds provide stable barrier protection and correct adverse microenvironment, promoting wound healing.
研究领域:
材料科学
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生物医学工程
·
创伤修复
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产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-9
·
IF 17.694
Yang Jingyi,Huang Yike,Qi Haifeng,Zeng Chaobin,Jiang Qike,Cui Yitao,Su Yang,Du Xiaorui,Pan Xiaoli,Liu Xiaoyan,Li Weizhen,Qiao Botao,Wang Aiqin,Zhang Tao
Metal-support interaction predominately determines the electronic structure of metal atoms in single-atom catalysts (SACs), largely affecting their catalytic performance. However, directly tuning the metal-support interaction in oxide supported SACs remains challenging. Here, we report a new strategy to subtly regulate the strong covalent metal-support interaction (CMSI) of Pt/CoFe 2 O 4 SACs by a simple water soaking treatment. Detailed studies reveal that the CMSI is weakened by the bonding of H + , generated from water dissociation, onto the interface of Pt-O-Fe, resulting in reduced charge transfer from metal to support and leading to an increase of C-H bond activation in CH 4 combustion by more than 50 folds. This strategy is general and can be extended to other CMSI-existed metal-supported catalysts, providing a powerful tool to modulating the catalytic performance of SACs.
研究领域:
催化
·
材料科学
·
化学工程
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产品关联
DOI
PubMed
高影响因子
Journal of Building Engineering
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2022
·
IF 7.144
Lu Liu,Piqi Zhao,Chen Liang,Shoude Wang,Yongbo Huang,Na Cui,Lingchao Lu
Due to internal defects, the traditional polymer-modified cement-based coating was hard to meet the high durability requirement of construction engineering. The hydrophobic flake as a functional filler provided a new solution for improving the protection performance. However, there has been almost no application report in this system so far. In this study, we tried to obtain the optimal number and mechanism by studying the effect of hydrophobic flake on the mechanical, waterproof, and brine soaking resistance properties of the coating with calcium sulphoaluminate (CSA) cement and polyacrylate (PA) emulsion as the main components. The results showed that the unique irregular tight structure of the hydrophobic flake would not only make the internal coating rougher and denser but also cut off the transport paths of harmful molecules inside the coating. The hydrophobic flake was beneficial to the mechanical properties and the brine soaking resistance of the polymer-modified cement-based coating.
研究领域:
建筑材料学
·
土木工程
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DOI
高影响因子
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
·
2018
·Vol. 69
·期 6
·736-748
·
IF 1.259
Xiaojie Liu,Weihua Li,Wei Wang,Liying Song,Weijie Fan,Xiang Gao,Chuansheng Xiong
Mesoporous micro- or nanocontainers have been indicated to be potential carriers of corrosion inhibitors to modify water-based coatings for self-healing properties and excellent anti-corrosion performance. In this work, the eco-friendly mesoporous chitosan microspheres loaded with green corrosion inhibitor sodium phytate were incorporated in self-healing water-based polyacrylate coating. The microspheres with mesoporous surface, uniform size, and promising pH responsiveness were prepared via the water-in-oil (W/O) emulsion chemical cross-linking method. On this basis, chitosan microspheres loaded with 25.79 wt% sodium phytate were obtained by negative pressure impregnation method and the pH-responsive was demonstrated by the electrochemical impedance spectroscopy (EIS). The results of EIS and seawater immersion tests revealed that artificial defected water-based polyacrylate coating containing 5 wt% chitosan microspheres showed high anti-corrosion performance and exhibited self-healing capabilities due to the release of corrosion inhibitor sodium phytate.
研究领域:
材料科学
·
腐蚀工程
·
高分子化学
·
环境科学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Weili Li,Wei Qiu,Guang Yang,Xu Zeng,Min Zhang,Bin Xu,Xiaohui Zheng
Chemical protective clothing is crucial for shielding operators from toxic and hazardous substances. However, the limited moisture permeability of these garments significantly affects worker comfort and functionality over long periods. In this study, we introduce a novel graphene oxide/polyurethane composite membrane with an innovative alternating layer structure and improved interlayer bonding, produced through a simple, scalable layer-by-layer assembly method. The outstanding L-GO/PU membrane offers robust chemical protection for up to 24 h against harmful agents like mustard gas and dichloromethane, while also showing excellent resistance to both acidic and alkaline solutions. With a moisture permeability of 3116 g m −2 d -1 , this membrane ensures optimal comfort during extended use. Additionally, it demonstrates remarkable resistance to swelling, maintaining its structural integrity for 27 days during prolonged immersion in water. The L-GO/PU composite stands out as an excellent choice for chemical protective gear, combining high toxicity resistance with superior moisture management capabilities.
研究领域:
材料科学
·
化学工程
·
纺织工程
·
防护服装
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Yingying Feng,Haiyan Li,Mingjun Zhang,Jiaying Jin,Beiyao Zhang,Yong Wang,Zhike Li
Benzotriazole-loaded polydopamine/polyaniline (BTA@PDA/PANI) microcapsules are prepared vis the combination of a hard template method and in-situ polymerization. The PDA/PANI hollow microspheres are first prepared using SiO 2 as a hard template and etching them with hydrofluoric acid . The BTA corrosion inhibitor is then loaded into the PDA/PANI hollow microspheres to obtain the BTA@PDA/PANI microcapsules. The mean particle size and shell thickness of the synthesized microcapsules are 8.3 and 2.1 µm, respectively. The load capacity of BTA is above 20 wt%. The corrosion resistance of epoxy coatings with different contents and types of microcapsules is compared by saline immersion and electrochemical impedance tests. A scratched coating with 1 wt% BTA@PDA/PANI microcapsules has the best anti-corrosion effect. The synergistic anticorrosion mechanism of BTA, PDA and PANI is revealed and confirmed.
研究领域:
材料科学
·
腐蚀工程
·
高分子化学
·
表面工程
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Wenzi Liang,Chang-An Xu,Limin Man
The use of biomass material to modify nanomaterials is an effective way to enhance the anti-corrosion properties of coatings. In this work, modify graphene oxide (GO) and pyridinized graphene oxide (TGO) using lignin through D-A reaction, and then combined with resin to prepare a composite coating with excellent anti-corrosion properties under thermal polymerization. The results showed that after being soaked in salt water for 120 days, the impedance modulus of the lignin grafted TGO-based composite coating was two orders of magnitude higher than that of the control group, and its anti-corrosion performance was superior to that of the lignin grafted GO-based composite coating. Molecular dynamics simulations showed that the presence of pyridine groups promoted the directional arrangement of GO, with an orientation angle of 10°. This made the diffusion path of the corrosive medium in the coating more tortuous, thereby prolonging the service life of the metal. Scratch experiments showed that lignin grafted TGO-based composite coating had fewer corrosion products at the scratch site and exhibited excellent self-healing anti-corrosion properties. This work not only provided a new preparation method for modifying nanomaterials with lignin, but also offered a reference for the design of sustainable self-healing anti-corrosion coatings.
研究领域:
材料科学
·
纳米技术
·
表面工程
·
腐蚀科学
·
高分子科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2025
·
IF 6.1
Junru Gao,Qiangsong Wang,Liyan Dong,Jinchun Ren,X.I.N.L.U. CHAI,Kexing Song
Material corrosion is a critical factor leading to structural failure, performance degradation, and significant economic losses, particularly in harsh marine environments. Therefore, enhancing the corrosion resistance of metallic materials is crucial for extending equipment service life, ensuring operational safety, and reducing maintenance costs. This work elucidates the passivation mechanism of 1,2,3-benzotriazole (BTA) on B30 cupronickel (Cu 30Ni alloy, UNS C71500) through integrated electrochemical analysis and 28-day artificial seawater immersion testing. XPS characterization revealed a multi-component passivation layer (20–30 nm thickness) comprising Cu(I)-BTA organometallic compounds, Ni(II)-BTA chelates, and crystalline Cu₂O domains. The optimized BTA treatment enhanced surface hydrophobicity, evidenced by a 20 % increase in water contact angle (85° → 102°). Electrochemical polarization demonstrated remarkable corrosion current density suppression from 18.5 μA/cm 2 (bare alloy) to 0.504 μA/cm 2 (passivated), indicating two-order-of-magnitude improvement. Long-term immersion tests at 25 °C showed 87 % reduction in corrosion rate (0.0114 → 0.0015 mm/a). The synergistic effects of organic-inorganic hybrid film formation and hydrophobicity enhancement establish BTA passivation as a viable eco-friendly alternative to chromate treatments for marine alloy protection.
研究领域:
材料科学
·
腐蚀工程
·
表面化学
·
电化学
·
海洋工程
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）