Progress in Organic Coatings最新文献

{"title":"E/Z photoisomerization-induced photostability in benzylcyanocoumarin dyes and their coatings","authors":"Seong Hyun Jang ,&nbsp;Byung Kyu Jeon ,&nbsp;Hyun Kyu Lee ,&nbsp;Woo Jin Choi ,&nbsp;Jun Ho Yoon ,&nbsp;Wan Soo Kim ,&nbsp;Yoon Mi Choi ,&nbsp;Jae Pil Kim ,&nbsp;Jun Choi","doi":"10.1016/j.porgcoat.2025.109360","DOIUrl":"10.1016/j.porgcoat.2025.109360","url":null,"abstract":"<div><div>In this study, benzylcyanocoumarin derivatives with various functional groups were designed and synthesized to maximize lightfastness. Notably, we propose an innovative strategy to enhance color stability by controlling the <em>E</em>/<em>Z</em> photoisomerization reaction. The optical properties of the synthesized dyes were evaluated, revealing that the <em>E</em> and <em>Z</em> isomers exhibit similar optical absorption spectra and maintain stable coloration performance despite photoisomerization. The observed color stability is attributed to the increased linearity upon conversion to the <em>Z</em> form, which maintains conjugation due to the push-pull effect between electron-donating and electron-withdrawing groups, resulting in absorption characteristics comparable to those of the <em>E</em> form structure. Additionally, lightfastness tests were conducted on PMMA-based spin-coated films containing the synthesized dyes under accelerated UV-A irradiation. The results demonstrated that the films exhibited minimal color change even under intense UV exposure, confirming their excellent lightfastness. This study provides evidence that molecular design strategies controlling <em>E</em>/<em>Z</em> photoisomerization can enhance the lightfastness of organic dyes and pigments. Moreover, despite not possessing a polycyclic structure, the synthesized dyes present a promising approach for designing highly photostable organic dyes and pigments. These findings are expected to contribute significantly to the development of functional organic coating materials, solar energy applications, and display technologies, where superior colorimetric stability is required.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"207 ","pages":"Article 109360"},"PeriodicalIF":6.5,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177712","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":"Fluorene-vanillin hybrid: A multifunctional fluorophore for latent fingerprint detection and sustainable offset security ink development","authors":"Rakshitha K. Jain ,&nbsp;Anand P.J. ,&nbsp;Dhanya Sunil ,&nbsp;Poornima Bhagavath ,&nbsp;Anoop Kishore Vatti ,&nbsp;Mahadev Prasad K.S. ,&nbsp;Udaya Bhat K. ,&nbsp;Angel Treasa Alex","doi":"10.1016/j.porgcoat.2025.109425","DOIUrl":"10.1016/j.porgcoat.2025.109425","url":null,"abstract":"<div><div>Fluorophores play a pivotal role in forensic science and anticounterfeit applications due to their unique and distinct emission features, which enable visualization and authentication. In the pursuit for advanced fluorescent pigments, ortho vanillin-fluorene Schiff base (OAF) with bright orange fluorescence was synthesized using a cost-effective, simple, and one-step method. This fluorophore was highly effective in developing latent fingerprints (LFPs), enabling visualization of level 1–3 features on nonporous glass and semi-porous leather under 365 nm UV light. The interaction between glycine in the fingerprint residue on glass substrate and OAF was analyzed through computational studies and further validated using ATR-FTIR analysis. The FESEM images of the latent prints revealed detailed surface morphology and particle distribution on the ridges of the fingermarks. Further, fluorescent images of LFPs were successfully developed on sticky paint, moist glass, multicolored compact disc, and uneven leaf surface, demonstrating the material's versatility on challenging substrates. Moreover, the powder dusting of composite powder of OAF and JUP-AS120, a commercially available pigment enabled enhanced LFP visualization on glass under both 365 and 980 nm light sources for better contrast and minimal background fluorescence, while minimising degradation of fingerprint residues over time. In addition, an OAF spray was formulated using nitrocellulose resin, ethyl acetate and carbitol for broader forensic application, which facilitated LFP visualization down to fine minutiae details on porous, semi-porous and non-porous substrates. Furthermore, to address the growing rates of counterfeited products/banknotes/security documents, an ecofriendly composite security ink was formulated using OAF and JUP-AS120 to obtain offset prints with excellent resistance to photobleaching and scuffing on paper substrate. The ink film exhibited multilevel authentication features: orange fluorescence under a 365 nm light source, and green and red emissions without and with a 610 nm band pass filter, respectively under 980 nm laser source, enhancing security and making forgery more challenging. Additionally, biocompatible OAF can be incorporated in ink pads to offer a dual layer of validation for fingerprints on security documents: optical authentication by leveraging the ink's fluorescence properties and biometric recognition through fingerprint patterns.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"207 ","pages":"Article 109425"},"PeriodicalIF":6.5,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185481","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":"Rivet-like high-phosphorus-nitrogen-metal nanoparticles immobilized on the surface of MXene nanosheets for improved flame protection of epoxy coatings","authors":"Chunlin Chen ,&nbsp;Xinyu Bai ,&nbsp;Guoqing Xiao ,&nbsp;Fei Zhong ,&nbsp;Yuchen Tian ,&nbsp;Bin Wang ,&nbsp;Chunyan Chen ,&nbsp;Chuanlin Mou ,&nbsp;Zhengwei Yang ,&nbsp;Mingtan Wang","doi":"10.1016/j.porgcoat.2025.109421","DOIUrl":"10.1016/j.porgcoat.2025.109421","url":null,"abstract":"<div><div>MXene, as an emerging two-dimensional nanomaterial, is expected to be an inorganic nano-flame retardant. Here, polydopamine (PDA) organic layers were first loaded onto MXene to enhance the flame retardancy and surface reactivity. Then, rivet-like nanoparticles formed by hexamethylene diamine tetramethylenephosphonic acid (HDTMP) containing high phosphorus‑nitrogen flame-retardant groups and metal ions (Cu²⁺ and Fe²⁺) were immobilized on the surface of MXene/PDA through coordination, obtaining the composite flame retardant MP@Fe-CuHP. The new composite flame retardant MP@Fe-CuHP effectively combined the barrier property of MXene, the excellent catalytic carbonization ability of metal ions, and the flame retardant function of N and P elements in the gas phase. The enhancement of fire resistance of waterborne epoxy coatings by MP@Fe-CuHP composite flame retardants was systematically explored. The results showed that the EP sample filled with MP@Fe-CuHP had the lowest backside temperature (168.6 °C) when directly facing the flame impingement compared to the other samples tested. Additionally, the MP@Fe-CuHP/EP samples reached the maximum expansion height and residual carbon amount of 23.3 mm and 30.3 %, respectively, which supports its high thermal insulation performance. Besides, the MP@Fe-CuHP/EP samples achieved the lowest peak heat release rate (PHRR, 443.12 kW/m²), total heat release rate (THR, 17.93 MJ/m²), peak smoke production rate (PSPR, 0.114 m²/s), total smoke production (TSP, 3.776 m²), peak CO production rate (PCOPR, 0.041 %), and peak CO₂ production rate (PCO₂PR, 0.332 %), confirming their excellent fire safety and flame retardant performance during the combustion. Therefore, the successful development of this nano-flame retardant can help to further expand the application of MXene in waterborne epoxy intumescent flame retardant coatings.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"207 ","pages":"Article 109421"},"PeriodicalIF":6.5,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185477","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":"Artificially cultivated diatom frustule as oil reservoir toward anti-corrosion and anti-wear lubricant-infused surface","authors":"Fan Lei ,&nbsp;Minsheng Feng ,&nbsp;Ping Liu ,&nbsp;Xinyi Zhao ,&nbsp;Pan Wang ,&nbsp;Yan Sun ,&nbsp;Xulin Yang ,&nbsp;Junlong Yang ,&nbsp;Dazhi Sun ,&nbsp;Haoyang Sun","doi":"10.1016/j.porgcoat.2025.109401","DOIUrl":"10.1016/j.porgcoat.2025.109401","url":null,"abstract":"<div><div>The corrosion and wear of metals are significant issues that affect their performance and service life. Although superhydrophobic surface (SHS) coating can prevent metal corrosion, their inherent poor long-term stability and lack of lubricity remain major challenges that limit their application. A strategy for synthesizing multilayered lubricant-infused surface (LIS) coating by using artificially cultivated diatom frustules (DFs) as oil reservoirs through a spraying technique is demonstrated. The synergistic effect of hydrophobically modified DF and perfluoropolyether (PFPE) oil effectively prevents direct contact between corrosive media and the steel surface. The LIS coating exhibits superior anti-corrosion capabilities compared to the SHS coating during the 60 days immersion test in a 3.5 wt% NaCl solution. Meanwhile, the PFPE stored in the DF can continuously replenish the LIS surface, providing long-lasting anti-corrosion protection and sustainable anti-wear behavior. This allows the LIS coating to achieve a friction coefficient of 0.12 and a wear rate of 0.18 × 10⁻⁵ mm³·N⁻¹·m⁻¹, which are significantly better than those of pure steel and the SHS coating. This method offers a promising route to the applications of LIS in machinery, pipelines, infrastructure, maritime navigation, and outdoor equipment.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"207 ","pages":"Article 109401"},"PeriodicalIF":6.5,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185472","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":"Anionic/cationic grafted silica modified separator boosting efficient Li-ion transport","authors":"Chaonan He,&nbsp;Hongyan Wang,&nbsp;Lulu Wang,&nbsp;Song Xue","doi":"10.1016/j.porgcoat.2025.109398","DOIUrl":"10.1016/j.porgcoat.2025.109398","url":null,"abstract":"<div><div>The utilisation of lithium metal electrodes in high-energy-density rechargeable batteries is impeded by two crucial obstacles: the low mobility and thermal stability of polyolefin separators. Aiming at the structural defects of traditional polyolefin separators, this study proposes a surface functionalization modification strategy based on anionic or cationic surface modified silica nanoparticles. The surface grafting reaction induced by the silane coupling agent has been demonstrated to be an effective method for the construction of sulfonic acid (-SO₃H) and amino (−NH₂) functional groups on the surface of silica nanoparticles. The resultant functionalised nanoparticles (SiO₂-SO₃H/SiO₂-NH₂) have been shown to possess ion selectivity. Furthermore, based on the self-polymerization characteristics of dopamine, a uniform polydopamine (PDA) interface layer was constructed on the surface of polypropylene (PP) separator to improve the hydrophilic properties of polyolefin separator. Subsequently, the functionalized ionic silica particles were loaded on the surface of PDA modified PP separator by impregnation method, and the effects of different functional groups on the performance of separator and battery were systematically studied. The results showed that the wettability and flame retardancy of PP separator grafted with -SO₃H group surpassed those of the pristine PP separator and -NH₂ group modified system. Notably, the -SO₃H modified separator exhibits exceptional electrolyte absorption (&gt;200 %) and a remarkably low contact angle (12.6°), while concurrently attaining a lithium ion transference number (t_Li⁺) of up to 0.77. In the LiFePO₄||Li battery system, the separator can output a discharge specific capacity of 161 mAh g⁻¹ at 1C rate, which is 12.3 % higher than that of the unmodified PP separator (142.5 mAh g⁻¹ @ 1C, LiFePO₄||Li). In addition, the battery assembled by the sulfonic acid-modified separator has a content retention rate of &gt;95 % after 300 cycles, showing excellent rate performance and cycle stability. This synergistic strategy based on interfacial anion and cation functionalization and nanoparticle composite modification provides an innovative technical path for the development of lithium battery separators with high lithium ion migration and thermal safety.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"207 ","pages":"Article 109398"},"PeriodicalIF":6.5,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185478","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 of self-healing superhydrophobic film via inhibitor loaded LDH for improving the anti-corrosion performance of aluminum alloy","authors":"Yan Wang ,&nbsp;Xiang Gao ,&nbsp;Wei He ,&nbsp;Houyi Ma","doi":"10.1016/j.porgcoat.2025.109418","DOIUrl":"10.1016/j.porgcoat.2025.109418","url":null,"abstract":"<div><div>The critical factor in developing an environmentally friendly conversion film to replace chromium passivated films is endowing the conversion film with self-healing capabilities and enhancing its anti-corrosion properties. In this study, layered double hydroxides (LDH) films with self-healing characteristics were fabricated in situ on aluminum alloy surfaces by intercalating tungstate ions. Simultaneously, the unique microstructure of the LDH film was leveraged to fabricate superhydrophobic films via surface modification with fluorosilane. Scanning electron microscopy (SEM) results reveal that the prepared LDH films exhibit a uniform and dense lamellar structure. The intercalation of tungstate ions and the surface modification with fluorosilane do not compromise the structural integrity of the films. The water contact angle of the prepared films reaches up to 171°. Electrochemical impedance spectroscopy (EIS) results demonstrate that the protective efficiency of the films is 99.9 %. Even after prolonged immersion in NaCl solution for 80 days, the protective efficiency remains at 99.6 %. Furthermore, EIS results of artificially scratched samples show significant self-healing capabilities. The self-healing mechanism involves the release of tungstate ions to the scratched areas, which subsequently form a dense oxide layer on the aluminum alloy surface, thereby repairing the damaged film.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"207 ","pages":"Article 109418"},"PeriodicalIF":6.5,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144166281","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":"Designing styrene-acrylate interpenetrating polymer networks with tunable damping and acoustic properties using waterborne core-shell nanoparticles","authors":"Seyed Mohammadsadegh Jafari Alavi,&nbsp;Zahra Maghsoud,&nbsp;Parisa Fatemi Khadar,&nbsp;Suzan Abrishami","doi":"10.1016/j.porgcoat.2025.109392","DOIUrl":"10.1016/j.porgcoat.2025.109392","url":null,"abstract":"<div><div>Although styrene-acrylate systems exhibit significant sound damping properties, less attention has been paid to the relationship between their damping and acoustic behavior. In this study, styrene-acrylate latex particles with a core-shell structure were synthesized and the effect of the shell feeding method, crosslinker ratio, core monomer type and methyl methacrylate ratio in the shell on the mechanical properties of the latex was studied. The FTIR results confirmed the formation of a network within the core. DLS analysis revealed uniform latex particle size distribution (150–185 nm) and zeta potential measurements (−56 to −30 mV) indicated particle stability. Addition of 1 wt% crosslinker to the core, reduced the particle size and increased stability, but raising it to 3, 5 wt% reversed the effect, leading to decreased stability in the system. SEM and TEM results confirmed the spherical morphology and complete coverage of the core by the shell. The tensile test results showed that increasing MMA monomer content in the shell from 0 to 42 wt% raised tensile strength from 0.2 to 4.6 MPa. Moreover, adding 5 wt% crosslinking agent in the core increased the tensile strength from 3.3 to 7.3 MPa. Damping and acoustic properties were investigated using DMTA analysis and impedance tube, respectively. Comparison of the acoustic test results with theoretical calculations showed a strong correlation at 2000 Hz. In order to compare the damping and acoustic properties, a simple linear equation between TA_effect and NRC was proposed which showed a strong correlation (R² = 0.97) between mechanical and acoustic damping results.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"207 ","pages":"Article 109392"},"PeriodicalIF":6.5,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144166280","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":"Laccase-mediated dopamine polymerization: a bioinspired and sustainable coating technology","authors":"Flávia F. Magalhães ,&nbsp;Maria Laura Alfieri ,&nbsp;Konstantin Romanyuk ,&nbsp;Andrei Kholkin ,&nbsp;Mara G. Freire ,&nbsp;Alessandra Napolitano ,&nbsp;Ana Paula M. Tavares ,&nbsp;Lucia Panzella","doi":"10.1016/j.porgcoat.2025.109399","DOIUrl":"10.1016/j.porgcoat.2025.109399","url":null,"abstract":"<div><div>Polydopamine (PDA) has emerged as a widely used coating for various materials due to its unique properties such as robustness, biocompatibility, and antioxidant and photothermal activities. PDA coatings are usually prepared through autoxidation of dopamine under alkaline conditions, but this approach is generally time-consuming and requires high concentrations of the starting monomer. To overcome these drawbacks, enzymatic catalysis has emerged as a novel approach, allowing also to work in a wider range of pH values. In this work, the laccase-assisted dopamine polymerization and PDA film formation have been systematically investigated and optimized by varying reaction parameters, including dopamine and laccase concentrations as well as stirring speed and deposition time. The best results have been obtained at a low dopamine concentration (2.5 mM) in the presence of 0.25 mg/mL of laccase at pH 5.5, and under high stirring (1250 rpm). Under these conditions, laccase-assisted PDA film deposition resulted in significantly improved coating formation than that obtained through traditional autoxidation at pH 8.5 or sodium periodate-induced oxidation at pH 5.5 by approximately 5- and 1.6-fold, respectively. Insights into the chemical structure and morphological features of the PDA coatings were obtained by liquid chromatography–ultraviolet detection–mass spectrometry (LC-UV-MS), atomic force microscopy (AFM), kelvin-probe force microscopy (KPFM) and attenuated total reflectance-Fourier-transform infrared (ATR-FTIR) spectroscopy analysis. In addition, water contact angle (WCA) measurements were performed. These results provide a significant step forward for the obtainment of organic coatings under mild and sustainable conditions opening new possibilities for future applications in PDA-based functional materials.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"207 ","pages":"Article 109399"},"PeriodicalIF":6.5,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144166283","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":"Synergy of consecutive PEO and LDH surface treatments on the corrosion protection and adhesion strength of organic coatings on AA2024T3","authors":"Muhammad Ahsan Iqbal ,&nbsp;Humaira Asghar ,&nbsp;Endzhe Matykina ,&nbsp;Raúl Arrabal ,&nbsp;Marta Mohedano ,&nbsp;Jesús Manuel Vega","doi":"10.1016/j.porgcoat.2025.109397","DOIUrl":"10.1016/j.porgcoat.2025.109397","url":null,"abstract":"<div><div>The properties of the interface AA2024-T3/organic coating is improved with a tailored combination of different surface treatments: i) a dual anodizing process comprising an energy-efficient (41 % reduction in energy consumption) plasma electrolytic oxidation (PEO) process just after conventional anodizing (to build a precursor layer), followed by ii) a conversion coating (CC) based on the in-situ growth of a MgAl-layered double hydroxide (LDH). This combination allows the formation of a thick PEO coating (40 μm) with an outermost LDH-CC layer. Prior to applying the organic coating, a characterization of the roughness, crystalline structure, morphology and composition of the protective systems (PEO and PEO-LDH) is thoroughly investigated. Corrosion performance is evaluated using electrochemical impedance spectroscopy (EIS) for all the systems, uncoated and epoxy-coated ones. In addition, the wet and dry adhesion properties of the epoxy-coated systems are evaluated. Results reveal that the PEO-LDH + Epoxy system shows superior wet adhesion and better corrosion resistance after 28 days of immersion in 3.5 wt% NaCl. Furthermore, the EIS diagrams for the PEO-LDH system demonstrate a synergistic effect of the PEO and LDH treatments, as evidenced by the capacitance and resistance values associated with the low-frequency time constant, outperforming the stand-alone PEO system.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"207 ","pages":"Article 109397"},"PeriodicalIF":6.5,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144166286","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":"The synergy of catalytic nano-enzymes and fouling-release coating: Peroxidase-like Cu NPs composited polysiloxane-based polyurethane PDMS-PUA with enhanced antifouling properties","authors":"Mengnan Li ,&nbsp;Jiawen Sun ,&nbsp;Xiaofan Zhai ,&nbsp;Jing Yang ,&nbsp;Hongmei Ding ,&nbsp;Jianrong Song ,&nbsp;Sujuan Ye ,&nbsp;Jizhou Duan","doi":"10.1016/j.porgcoat.2025.109390","DOIUrl":"10.1016/j.porgcoat.2025.109390","url":null,"abstract":"<div><div>Marine biofouling presents a significant global challenge today. Silicone-based coatings have garnered considerable interest due to their low surface energy characteristics. However, their practical applications are limited by poor mechanical properties, weak adhesion, and poor static antifouling performance. In response to these inherent limitations, this study innovatively proposed a novel strategy of synergistic nano enzyme-catalyzed sterilization and low surface energy antifouling. A nanocomposite coating, PDMS-PUA-F-Cu, was developed by incorporating peroxidase-like copper nanoparticles (Cu NPs) into a silicone-based polyurethane (PDMS-PUA). The PDMS-PUA was first synthesized through a two-step process using isophorone diisocyanate (IPDI), hydroxy-terminated polydimethylsiloxane (HO-PDMS-OH), and 4,4′-methylenebis(3-chloro-2,6-diethylaniline) (MCDEA) as raw materials. Subsequently, Cu NPs modified with IPDI and polyethylene glycol (PEG) were incorporated into PDMS-PUA to obtain the PDMS-PUA-F-Cu. The resulting coating exhibited enhanced hardness (∼21 MPa) and strong substrate adhesion (∼1.75 MPa) while retaining hydrophobicity and low surface energy. More importantly, the peroxidase-like activity of Cu NPs catalyzed the generation of reactive oxygen species (·OH and ·O₂⁻), enabling dynamic sterilization that significantly enhances the antifouling performance. Experimental results demonstrated outstanding antibacterial rates of ∼98.6 % against <em>Pseudomonas aeruginosa</em> and ∼98.8 % against <em>Staphylococcus aureus</em>, along with remarkable inhibition of <em>Chlorella.</em> adhesion (∼97.4 %). Mechanistic studies confirmed that the synergy between nano enzyme-driven biocidal activity and low surface energy effectively overcame the static antifouling limitations of traditional silicone coatings. This work provides a viable approach for developing high-performance antifouling coatings by combining catalytic sterilization with low-surface-energy coatings.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"207 ","pages":"Article 109390"},"PeriodicalIF":6.5,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144166282","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}