Progress in Organic Coatings最新文献

{"title":"Partially fluorinated derivatives as a powerful tool for the restoration of blanched easel paintings","authors":"Yuqing Zhang ,&nbsp;Myriam Eveno ,&nbsp;Florian Gallier ,&nbsp;Agnès Lattuati-Derieux ,&nbsp;Nadège Lubin-Germain ,&nbsp;Mara Camaiti ,&nbsp;Antonella Salvini","doi":"10.1016/j.porgcoat.2025.109375","DOIUrl":"10.1016/j.porgcoat.2025.109375","url":null,"abstract":"<div><div>The use of specific coatings has considerable importance in the field of cultural heritage conservation. The blanching of easel paintings is a worrying phenomenon induced by excessive humidity and porous structures, often obscuring the image beneath a white haze. The research available in the literature describing solutions to solve this problem is extremely limited. In this research, new oligoamides containing hydroxyl and/or amino groups, <em>i.e.</em>, partially fluorinated oligodiethylene succinamide-<span>l</span>-tartaramide (<strong>DSTF</strong>) and oligodiethylene succinamide (<strong>DSF</strong>), were designed to give high affinity with the polar components present in paint films through non-covalent interactions, and have reduced environmental impact compared to the previously proposed perfluoroamide (<strong>DC6G900</strong>). These innovative products represent one of the few solutions proposed for this area of application. Their syntheses were carried out <em>via</em> condensation and subsequently ring-opening reaction of the short-fluorinated epoxy compound, 3-perfluorohexyl-1,2-epoxypropane (<strong>EC6F).</strong> The short-fluorinated chain has a dual effect; it improves surface performance by lowering surface tension while simultaneously reducing environmental impact compared to the perfluoro source previously used. The performance of the two new fluorinated oligoamides (<strong>DSTF</strong>, <strong>DSF</strong>) on blanched easel paintings was investigated through a series of tests, from the macroscopic to the microscopic scale. The new fluorinated oligoamides dramatically decreased the luminance value (almost restoring the value of the un-blanched sample) in comparison with the other tested compounds (<strong>ESTF</strong>, <strong>ESF</strong>, <strong>DF</strong> and <strong>DC6G900</strong> as a reference). This result is ascribed to the ability of the compounds to fill the pores of the blanched surfaces, as demonstrated by the morphological study using a Field emission gun - Scanning electron microscopy. In addition, preliminary investigations showed that all the tested compounds, can be removed from the treated mock-ups using 2-propanol or 2,2,2-trifluoroethanol, giving promising results concerning the removal of the restoration treatments.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"207 ","pages":"Article 109375"},"PeriodicalIF":6.5,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sodium alginate/poly(vinyl alcohol)/graphitic carbon nitride composite membrane with excellent anti-fouling properties for efficient oil-water separation","authors":"Jieyu Wan ,&nbsp;Wenjie Wu ,&nbsp;Yanqin Wang ,&nbsp;Weijia Zhou ,&nbsp;Jun Shao ,&nbsp;Changfeng Wan ,&nbsp;Haoqing Hou","doi":"10.1016/j.porgcoat.2025.109352","DOIUrl":"10.1016/j.porgcoat.2025.109352","url":null,"abstract":"<div><div>The oil spills and organic wastewater is a kind of environmental pollution which attracts widely concern. Membrane separation is a potential technology to settle these wastewaters. However, the high cost, the weak antifouling property, and the less functionality of the separation materials limit their promotion. In this work, the sodium alginate/polyvinyl alcohol/graphite-phase carbon nitride (PVA@SA@CN) hydrogel composite membranes were coated on the stainless steel mesh, and the double-network composite membrane was constructed. Results indicated that the PVA@SA@CN composite membrane is superhydrophilic/underwater superhydrophobic, and this composite presents excellent anti-fouling property. Oil-water separation experiments indicated that the separation efficiency was higher than 99 % even constitutively separated for 50 times, and the highest flux reached to 4.5 × 10³ L·m⁻²·h⁻¹. In addition, the PVA@SA@CN composite membrane also presented exceptional self-cleaning ability. This research provides a new approach to the field of continuous oil-water separation.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"207 ","pages":"Article 109352"},"PeriodicalIF":6.5,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A layer-by-layer coated highly conductive cotton fabric combining with superhydrophobicity, photothermal property, UV shielding, and temperature sensing","authors":"Si Sun ,&nbsp;Hui-Yao Feng ,&nbsp;Xi Shu ,&nbsp;Qian-Ru Xiao","doi":"10.1016/j.porgcoat.2025.109387","DOIUrl":"10.1016/j.porgcoat.2025.109387","url":null,"abstract":"<div><div>Multifunctional composite fabrics combining exceptional water repellency with synergistic performance benefits are emerging as promising candidates for next-generation applications. This study reports a rationally designed superhydrophobic cotton fabric with robust stability and high conductivity, fabricated through sequential layer-by-layer deposition of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), pen ink, polydimethylsiloxane (PDMS), and silica nanoparticles (SiO₂). The developed fabric achieves superhydrophobicity (water contact angle 155.3^o ± 3.0^o), enhanced electrical conductivity, photothermal properties, UV shielding capability (UV blocking rate &gt; 99.993 %), and temperature sensing functionality. These multifunctional properties demonstrate quantifiable performance in self-cleaning, Joule heating, solar-assisted water evaporation, UV blocking, and temperature detection. Notably, the fabric maintains superhydrophobicity under harsh conditions including acidic/alkaline solutions, UV irradiation, and water impact. Furthermore, the modified fabric exhibits excellent stability after repeated electrical heating cycles. The multifunctional synergy on cotton fabric establishes a viable approach for engineering multifunctional superhydrophobic textiles with tailored performance, addressing the growing demands for advanced materials in intelligent fabric innovation.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"207 ","pages":"Article 109387"},"PeriodicalIF":6.5,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamic boron-carbamate bonds cross-link polyurea elastomers with enhanced impact-resistant properties","authors":"Sibo Wang ,&nbsp;Rongrong Chen ,&nbsp;Peili Liu ,&nbsp;Jing Yu ,&nbsp;Qi Liu ,&nbsp;Jingyuan Liu ,&nbsp;Jiahui Zhu ,&nbsp;Jun Wang","doi":"10.1016/j.porgcoat.2025.109380","DOIUrl":"10.1016/j.porgcoat.2025.109380","url":null,"abstract":"<div><div>Polyurea is widely used in infrastructure protection because of its significant mechanical properties, excellent toughness, and rapid curing performance. However, developing a high-strength polyurea with a rapid impact response remains challenging. Here, dynamic boron-carbamate bonds are integrated with polyurea elastomers (B_xPU) by cross-linking a mixture of diisocyanate and aniline-terminated polyether with boric acid to achieve enhanced mechanical strength and toughness. Polyurea elastomer (B₃PU) exhibits superior mechanical performance, attributed to the synergistic effect of reversible boron-carbamate bonds and hydrogen bonds, with an ultimate strength of 53.8 MPa, a tensile strain of 738.8 %, and a toughness of 240.9 ± 26.4 MJ m⁻³. Additionally, the experimental and simulation results demonstrate that the B_xPU elastomers exhibit fast responsiveness, excellent impact resistance, and protective performance. Collectively, this study highlights a facile method for developing high-strength polyurea elastomers with enhanced impact resistance, providing a new choice for explosion protection and building longevity.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"207 ","pages":"Article 109380"},"PeriodicalIF":6.5,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication and characterization of a transparent, hydrophilic, and self-cleaning polyurethane coating on glass with a silica buffer layer and Ag₃PO₄/TiO₂ nanocomposite","authors":"Reyhaneh Kaveh,&nbsp;Zahra Alizadeh","doi":"10.1016/j.porgcoat.2025.109382","DOIUrl":"10.1016/j.porgcoat.2025.109382","url":null,"abstract":"<div><div>Self-cleaning coatings have attracted considerable interest in recent decades due to their potential to reduce maintenance costs and enhance surface durability. Among the various strategies, hydrophilic coatings incorporating metal oxides utilize the photocatalytic effects to remove organic contaminants via solar-assisted chemical degradation and water sheeting mechanisms. In this study, a polyurethane (PU)-based self-cleaning coating was fabricated by integrating Ag₃PO₄/TiO₂ (APT) nanocomposites into the PU matrix. Ag₃PO₄ was selected for its high photocatalytic activity under visible light, while TiO₂ was added to improve photostability and suppress electron-hole recombination. To enhance optical clarity and mechanical adhesion, a SiO₂ interlayer was first deposited onto glass substrates using the sol-gel method followed by dip-coating. Subsequently, the PU@APT top layer was applied via dip-coating, maintaining an immersion and withdrawal rate of 200 mm/min at a 90° dipping angle. APT nanocomposites with varying TiO₂ content—10 wt%, 30 wt%, and 50 wt%—were synthesized, yielding three formulations: APT10, APT30, and APT50. Comprehensive characterization was conducted using X-ray diffraction (XRD), Attenuated total Reflectance-Fourier transform infrared (ATR-FTIR), field emission scanning electron microscopy (FESEM), photoluminescence (PL) spectroscopy, Electrochemical impedance spectroscopy (EIS) and UV–Vis diffuse reflectance (DRS). Hydrophilicity was assessed via water contact angle (WCA) measurements, while surface roughness was evaluated using Atomic Force Microscopy (AFM). Photocatalytic performance was quantified through methylene blue (MB) dye degradation under visible light irradiation. Among the developed coatings, the SiO₂-PU@APT30 exhibited optimal performance, achieving 58 % MB degradation within 3 h, significantly outperforming the SiO₂-PU@TiO₂ and Si-PU@Ag₃PO₄, which showed only 16 % and 31 % degradation, respectively. The observed enhancement is attributed to the synergistic interaction between Ag₃PO₄ and TiO₂, facilitating improved charge separation and photocatalytic efficiency. The SiO₂-PU@APT30 coated glass achieved an impressive transmittance of 86 %. By facilitating the formation of a uniform water film instead of droplets, it effectively prevents fog accumulation, providing a significant advantage over uncoated glass. Additionally, the final coating exhibited excellent hydrophilicity, with the water contact angle (WCA) significantly reduced from approximately 63° to 27° and after 30 min of visible light exposure, completely prevents condensation and droplet formation, demonstrating superior antifogging performance compared to bare glass. This, combined with its outstanding anti-fogging performance and superior photocatalytic activity, highlights its potential as an efficient and effective self-cleaning surface treatment.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"207 ","pages":"Article 109382"},"PeriodicalIF":6.5,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144083615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bioinspired rosin-borneol eco-friendly antifouling coatings with self-renewable and self-generatable amphiphilic surface","authors":"Zhongqiang Yu ,&nbsp;Yine Ren ,&nbsp;Yanke Li ,&nbsp;Xuesong Chen ,&nbsp;Wen Sun ,&nbsp;Lida Wang ,&nbsp;Zhengqing Yang ,&nbsp;Guichang Liu ,&nbsp;Qian Zhang","doi":"10.1016/j.porgcoat.2025.109379","DOIUrl":"10.1016/j.porgcoat.2025.109379","url":null,"abstract":"<div><div>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/cm²·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/mm²), 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.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"207 ","pages":"Article 109379"},"PeriodicalIF":6.5,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144083616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hybrid waterborne polyurethane coating behavior in saline solution","authors":"Jeaneth T. Corredor ,&nbsp;Luis F. Giraldo ,&nbsp;Esneyder Agudelo","doi":"10.1016/j.porgcoat.2025.109378","DOIUrl":"10.1016/j.porgcoat.2025.109378","url":null,"abstract":"<div><div>Waterborne polyurethane/acrylate (WPUA) dispersion was synthesized via a prepolymer self-emulsifying method, using bisphenol-A-glycidyl dimethacrylate (Bis-GMA) as a chain extender and grafting agent for styrene and butyl acrylate monomers. The degradation of WPUA coatings on mild steel in a 3.5 wt% NaCl solution was investigated through electrochemical impedance spectroscopy and open circuit potential measurements. The water uptake estimated from the Brasher-Kingsbury relation, the intersection of Bode plots (IBP number), and electrical equivalent circuits (ECC) has been analyzed during the degradation process. Particle size (DLS) and morphological (TEM) analyses revealed that the WPUA dispersion exhibited nanometric particle sizes with a core-shell structure. The thermal (TGA/DTG) properties and cross-cut adhesion of the WPUA coatings were greatly enhanced compared to the blank WPU.</div><div>Contrary to typical expectations, the impedance modulus in the low-frequency range (lZ_0.01Hzl) did not decrease with immersion time for all samples; this effect is attributed to the polymer network characteristics. The degradation mechanisms of the WPUA coatings involve three steps: an initial coating failure as a consequence of the entry of water; in the second step, water absorption continues until a critical level is reached. During this stage, no significant changes in coating resistance were detected. Finally, sudden changes in the monitored parameters indicate the loss of the protective properties.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"207 ","pages":"Article 109378"},"PeriodicalIF":6.5,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144083613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"One-step fabricated multifunctional nanocomposite coatings with dynamic dewetting and active deicing for harsh environments","authors":"Zhijie Liu ,&nbsp;Linbo Zhang ,&nbsp;Huyin Yan ,&nbsp;Jing Guo ,&nbsp;Le Yuan ,&nbsp;Haipeng Lu ,&nbsp;Liangjun Yin","doi":"10.1016/j.porgcoat.2025.109386","DOIUrl":"10.1016/j.porgcoat.2025.109386","url":null,"abstract":"<div><div>Ice accretion on wind turbine blades critically compromises energy conversion efficiency (≤80 %) and structural integrity. Herein, we propose a fluorine-free multifunctional coating integrating synergistic photothermal and superhydrophobic mechanisms for sustainable anti-icing applications. The rationally designed P-CNT/PDMS/EP composite, synthesized via a single-step blade-coating technique, demonstrates simultaneous ultra-repellency (150.43° static contact angle, 3.94° sliding angle) and efficient solar energy conversion (94.88 % broadband absorption). Under simulated extreme conditions (−20 °C, 15 m·s⁻¹ crosswinds), the coating achieves rapid ice shedding within 240 s through photothermal activation while maintaining 95 % hydrophobicity retention after mechanical abrasion. Notably, ice accumulation reduces to 2 % of uncoated surfaces, coupled with exceptional environmental stability (ΔCA &lt;2° after 30-day UV/thermal aging). Multiphysics simulations incorporating phase-change dynamics and turbulent flow interactions validate year-round operational reliability across temperate to polar climates. This paradigm-shifting strategy addresses the critical durability challenges in conventional anti-icing technologies while aligning with green chemistry principles for renewable energy infrastructure.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"206 ","pages":"Article 109386"},"PeriodicalIF":6.5,"publicationDate":"2025-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Durable icephobic acrylic polyurethane coating with ultra-low interfacial toughness for efficient large-scale deicing","authors":"Chenyue Liang,&nbsp;Yu Li,&nbsp;Wuzhuang Wei,&nbsp;Yuhong Zhao,&nbsp;Shujuan Wang,&nbsp;Tao Hong,&nbsp;Xinli Jing","doi":"10.1016/j.porgcoat.2025.109374","DOIUrl":"10.1016/j.porgcoat.2025.109374","url":null,"abstract":"<div><div>Ice accretion adversely affects various productions and daily activities. Existing passive deicing materials are divided into icephobic and low interfacial toughness (LIT) coatings, suitable for ice removal of small- and large-area, respectively. However, they tend to lack scalability or durability, limiting the practical utility. Herein, thermosetting acrylic polyurethane (APU) was investigated for large-scale deicing applications by examining the detachment behavior of extended-length ice on its surface. Despite the ice adhesion strength reaching up to 400 kPa, the APU demonstrated interfacial toughness with ice as low as 0.88 J/m², with the apparent ice adhesion strength below 48 kPa for ice measuring 20 cm in length. Further, by modifying the surface of APU with liquid-like polydimethylsiloxane chains, we realized the combination of LIT coating and liquid-like surface for the first time. The interface between this resultant double-layered coating and ice achieved both low toughness (&lt;1 J/m²) and low strength (&lt;100 kPa) (LTS), enabling efficient ice removal at any accumulation scale. This LTS coating also maintained excellent ice resistance after multiple icing/deicing cycles, sandpaper abrasion, and water flow impact. When applied to various substrates, it still exhibited superior ice resistance, demonstrating strong potential for broad deicing applications.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"206 ","pages":"Article 109374"},"PeriodicalIF":6.5,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kaolin-supported NiCo-LDH nanocontainers for self-healing and anti-corrosion epoxy coatings","authors":"Lin Cao ,&nbsp;Huimeng Feng ,&nbsp;Shougang Chen ,&nbsp;Mingxian Sun ,&nbsp;Baozhu Wang ,&nbsp;Li Ma","doi":"10.1016/j.porgcoat.2025.109381","DOIUrl":"10.1016/j.porgcoat.2025.109381","url":null,"abstract":"<div><div>Considerable attention has been paid to the corrosion protection of metals due to economic and environmental issues. Among the available approaches, organic-inorganic coatings remain the most practical and economical barrier technology. Nevertheless, conventional formulations frequently suffer from limited durability, inadequate adhesion, and elevated production costs, which restrict their large-scale deployment in harsh environments. In this study, kaolin served as a substrate for the hydrothermal co-precipitation of NiCo-LDH, resulting in K/NiCoLDH composites. Gallic acid (GA), an organic corrosion inhibitor, was then intercalated into the NiCo-LDH structure to form K/NiCoLDH@GA nanocontainers, which were added to an epoxy matrix to enhance corrosion resistance and self-healing capabilities. Structural characterization demonstrated the effective combination of kaolin and NiCo-LDH, and confirmed GA intercalation into the LDH interlayers. Electrochemical measurements and laser confocal microscopy revealed that K/NiCoLDH@GA effectively inhibited the corrosion of Q235 steel by providing both barrier protection and active ion exchange.The prepared K/NiCoLDH@GA/EP coating was further evaluated through long-term electrochemical tests in a simulated seawater environment, showcasing sustained protective performance. To examine self-healing behavior, an artificial scratch was introduced on the coating surface, and the repair process was monitored via scanning Kelvin probe (SKP). Results indicated that the release of GA from the nanocontainers significantly reduced localized corrosion at the defect site. Overall, the K/NiCoLDH@GA nanocontainer system offers a promising, cost-conscious pathway for designing robust and eco-friendly corrosion-resistant epoxy coatings in demanding marine environments.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"206 ","pages":"Article 109381"},"PeriodicalIF":6.5,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}