LANGMUIR
·
2019
·
IF 3.683
Zhonglin Cao,Tiansheng Gan,Gaixia Xu,Chunfeng Ma
Inspired by fish skin, biomimetic self-renewal poly[(ethylene oxide)-co-(ethylene carbonate)] (PEOC) brushes with protein resistance had been prepared via surface-initiated ring-opening polymerization (ROP). The results of hydrolytic degradation indicated that the PEOC brushes could degrade in artificial seawater. Ellipsometry, X-ray photoelectron spectrometry, and contact angle results demonstrated that the PEOC brushes degrade uniformly. By using a quartz crystal microbalance with dissipation, we studied the protein adsorption on the surfaces in artificial seawater at different degradation times. After 24, 48, 96, and 168 h of degradation, the PEOC surfaces showed nearly zero Δf and ΔD for bovine serum albumin, lysozyme, and fibrinogen. More importantly, there was a notably lower density of microorganisms adhered to the surface modified with PEOC compared with that of the surface without PEOC in natural seawater. The current study showed that the PEOC brushes exhibit a self-renewal property with persistent protein resistance and prevent the adhesion of microorganisms. Such a biomimetic polymer had a great potential in marine antibiofouling.
研究领域:
材料科学
·
生物医学工程
·
海洋科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Guilan Fu,Shixin Zhu,Xiuhua Sun,Changlu Gao
Copolymers with quaternized poly(lauryl methacrylate)-b-poly(2-( N , N -dimethylamino) ethyl methacrylate) (PLMA-b-PDMAEMA) as the side chain, polycaprolactone (PCL) and siloxane bridged with hexamethylene diisocyanate (HDI) as the main chain were developed for antifouling marine coatings. With the hydrolysis of the quaternized PLMA-b-PDMAEMA and the degradation of PCL in seawater, the outmost surface of the coating peeled off by water shearing force. By exploring the co-effects of side chains, PCL and siloxane at varying contents, it was found that coatings with higher content of side chains tended to yield better surface hydrophilicity, faster surface self-renewal speed and lower protein adsorption amount. However, coatings with higher content of siloxane demonstrated stronger antibacterial abilities, even though they possessed less hydrophilicity and lower surface renewal speed. In-lab tests showed that the antibacterial rate of the coating can reach 99.7 % against E. coli and 99.6 % against S. aureus . And the lowest adsorption amount of bovine serum albumin was 36 μg/cm 2 . Marine field tests revealed that most of the surface area of the properly designed coatings was clear of marine organisms during ∼330 d of testing.
研究领域:
材料科学
·
海洋科学
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2025
·
IF 12.1
Minglong Yan,Saijun Wu,Yuchen Zhong,Yinghao Wu,Yangmin Wu,Xijian Lan,Wenjie Zhao
Silicone hydrogel coatings, which integrate fouling self-release and fouling resistant properties, represent a groundbreaking advancement in environmentally friendly biofouling mitigation, but are still plagued by static fouling conditions and longevity concerns. In this work, Schiff base chemistry and a sol-gel technique is leverage to develop degradable silicone-hydrogel hybrid antifouling coatings by incorporating amphiphilic silicone-based polymers with terephthalaldehyde (TPE) and cinnamaldehyde (CAL). The synergistic combination of flexible Si─O bonds in the polymer backbone and reversible covalent crosslinking imparts exceptional flexibility (hardness of 0.135), controlled degradability, and dynamic surface self-renewal capabilities, ensuring sustained antifouling performance through surface dynamic stability. During degradation, the amphiphilic polymers will self-enrich at the interface, forming a dual-functional surface that combines fouling release and fouling resists properties. The antibacterial TPE and natural CAL, anchored within the polymer network, exhibit environment-responsive release behavior, effectively suppressing bacterial proliferation and biofilm adhesion. The optimized coating achieves a bactericidal rate of 98.8%, an anti-bacterial adhesion rate of 99.8%, and a predicted anti-fouling longevity of 5.5 years with a thickness of 200 µm. This innovative approach enables a new anti-biofouling coating that involves unique fouling control mode, thereby meeting the diverse application.
研究领域:
材料科学
·
生物医学工程
·
海洋科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry B
·
2013
·Vol. 1
·期 24
·3099-3106
·
IF 0
Chunfeng Ma,Liguo Xu,Wentao Xu,Guangzhao Zhang
Degradable polyurethane (PU) with copolyester oligomer consisting of ε-caprolactone (CL) and glycolide (GA) as the soft segments has been prepared by a combination of ring-opening polymerization and condensation reaction. Enzymatic and hydrolytic degradation experiments demonstrate that the PU can degrade in seawater. Such a polyurethane exhibit a more rapid degradation in comparison with that with poly(ε-caprolactone) (PCL) soft segments because the introduction of GA can reduce the crystallinity, as revealed by differential scanning calorimetry (DSC) and polarizing optical microscope (POM). Marine field tests show that the degradable polyurethane has good antifouling ability due to its self-renewal property. Besides, such polyurethane can serve as a carrier and controlled release system for an antifoulant, and the incorporation of an antifoulant in the polyurethane can significantly improve the antifouling ability and duration.
研究领域:
材料科学
·
海洋生物学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Miao Gao,Lei He,Zhi-Yan Guo,Yan-Ru Yuan,Wen-Wei Li
Nickel hydroxide (Ni(OH)2)-based electrocatalysts are promising for the oxygen evolution reaction (OER) due to their low cost, but their activity and durability still need substantial improvement to meet practical application. Here, we report a sulfate-functionalized Ni(OH)2 nanobelt (S-Ni(OH)2) electrocatalyst, which exhibited self-enhanced OER activity due to its self-renewed surface during anodic oxidation. The S-Ni(OH)2 was in situ grown on the nickel foam (NF) surface in potassium peroxydisulfate solution through one-step hydrothermal treatment. This material outperformed all the existing electrocatalysts in the intensity and duration of the OER activity enhancement. An overpotential drop of 70 mV is shown by the S-Ni(OH)2/NF electrode during 110 h reaction at a current density of 100 mA cm–2, and the overpotential remains as low as 358 mV at a current density of 200 mA cm–2. Such activity enhancement during OER is mainly ascribed to the formation of a highly active NiOOH/Ni(SO4)0.3(OH)1.4 composite on the S-Ni(OH)2 surface as a result of gradual sulfate release. Given the facile and environmentally benign fabrication process (without external addition of a Ni source and surfactant) and good electrochemical properties (high activity and long lifetime), the S-Ni(OH)2 holds great potential for practical OER application. The surface self-renewal strategy developed here might also be expanded to other electrocatalysts and electrochemical processes.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Zhongqiang Yu,Yine Ren,Yanke Li,Xuesong Chen,Wen Sun,Lida Wang,Zhengqing Yang,Guichang Liu,Qian Zhang
The release of toxic and persistent substances in conventional antifouling paints has elicited substantial environmental concerns, underscoring an urgent requirement for eco-friendly alternatives. This study presents the successful synthesis of an eco-friendly antifouling coating, denoted as PSBZ-X-Y, through the grafting of a hydrolysable borneol-modified zwitterionic precursor, DEA-IBOA, onto a bio- derived rosin resin. The PSBZ-X-Y coating exhibits a controlled self-renewable rate (50–400 μg/cm 2 ·d) tuned by varying DEA-IBOA modified rosin content, which enhances the coating's durability and regulates the release of borneol. Molecular dynamics (MD) simulations and surface structure analyses, including ATR-FTIR and XPS, reveal that hydrolysis of DEA-IBOA leads to the release of the natural antimicrobial agent borneol and thus facilitates the in-situ generation of zwitterionic surfaces. Amphiphilic surfaces and natural antimicrobial borneol as eco-friendly approaches synergistically enhance the antifouling properties of natural rosin, which in turn promotes the sustainability of amphiphilic surfaces due to its self-renewal capability. Consequently, the coating exhibits remarkable resistance to protein adhesion (FITC-BSA adhesion rate: 0.4 %), bacterial biofilm formation (absorbance of biofilm: 1.3), and diatom attachment (150 cells/mm 2 ), as well as remarkable antifouling properties in real marine environments. More importantly, the hydrolyzed products generated during the coating renewal process demonstrate no adverse effects on the marine ecosystem, thus contributing to eco-friendly antifouling systems based on natural products.
研究领域:
材料科学
·
海洋生物学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Materials Horizons
·
2024
·
IF 12.2
Saijun Wu,Minglong Yan,Yinghao Wu,Yangmin Wu,Xijian Lan,Jianjun Cheng,Wenjie Zhao
Inhibiting the adhesion and growth of marine microorganisms through photocatalysis is a potentially efficient and environmentally friendly antifouling strategy. However, the undesired “shading effect” caused by resin coatings and microbial deposition reduces the utilization of the catalysts and leads to a failure in the antifouling active substance on the coating surface. Here, we successfully developed a composite coating (DPC-x) combining g-C3N4 nanosheet (g-C-NS) photocatalysts with degradable green poly-Schiff base resins, which integrates the dual functions of enhanced dynamic self-renewal and photocatalytic antibacterial activities towards long-term anti-biofouling. The controllable and complete degradability of the poly-Schiff base polymer chains and the self-renewal mechanism of the DPC-x coating exposed the internal g-C-NS, which provided a constant stream of photocatalytic reactive interfaces for 100% utilization and release of the photocatalysts. g-C-NS were homogeneously dispersed in the degradable resin coating, significantly enhancing and adjusting the self-renewal rate of the poly-Schiff base resin coating in visible light. The degradation reaction rate of DPC-0.2 (20 wt% g-C-NS) was 40 times that of DPC, thus improving the capabilities of surface self-renewal and fouling-release. Due to the synergistic antifouling mechanism of the efficient antibacterial properties and the enhanced degradation/self-renewal, the antimicrobial rates of DPC and DPC-0.2 were 94.58% and 99.31% in the dark, and 98.2% and 99.87% in visible light. DPC-x has excellent all-weather antimicrobial efficacy and could offer a new perspective on eco-friendly marine antifouling strategies.
研究领域:
材料科学
·
环境科学
·
海洋生物学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）