3区材料科学

Coatings Pub Date : 2026-08-14 DOI: 10.3390/coatings16080970

Yang Liu, Jing Li, Kaibao Wang, Huirong Le

{"title":"Processing and Tribological Behavior of Graphene Oxide Nanoplates Reinforced UHMWPE Composites","authors":"Yang Liu, Jing Li, Kaibao Wang, Huirong Le","doi":"10.3390/coatings16080970","DOIUrl":"https://doi.org/10.3390/coatings16080970","url":null,"abstract":"Ultra-high molecular weight polyethylene (UHMWPE) is the preferred bearing material for total knee arthroplasty, yet its limited service life (15–20 years) remains a clinical challenge. This study investigates graphene oxide (GO) nanoplatelets as reinforcing fillers to enhance the mechanical and tribological performance of UHMWPE for longer-lasting implants. GO/UHMWPE composites with 0–1 wt% GO were fabricated via solution blending and hot compression molding. Direct SEM imaging combined with oxygen elemental mapping confirmed uniform GO dispersion up to 0.5 wt%, whereas higher loadings induced agglomeration. Dynamic mechanical analysis showed that the storage modulus at 37 °C increased with GO content, peaking at 0.5 wt% (improved by ~28% over neat UHMWPE), then decreased due to aggregation. Tribological tests under dry reciprocating sliding revealed that GO progressively reduced the wear rate (up to ~45% at 1.0 wt%), but also raised the steady-state friction coefficient from 0.13 to 0.19, attributed to molecular chain anchoring. The optimal balance of enhanced stiffness and wear resistance, with only a marginal friction increase, was achieved at 0.5 wt% GO. The reinforcement mechanism involves efficient stress transfer to rigid GO sheets and reduced surface peeling. This work provides a robust processing route and direct dispersion evidence, offering practical guidance for designing high-performance UHMWPE composites for orthopedic applications.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"16 8","pages":"970-970"},"PeriodicalIF":0.0,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148861319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pickering Emulsions Loaded with Thymol and Stabilized by Mung Bean Protein/Whey Protein Isolate Nanoparticles: Stability and Functional Properties 绿豆蛋白/乳清分离蛋白纳米颗粒稳定的百里香酚酸洗乳：稳定性和功能特性

3区材料科学

Coatings Pub Date : 2026-05-01 DOI: 10.3390/coatings16050540

Song Li, Jing Xie, Jun Mei

{"title":"Pickering Emulsions Loaded with Thymol and Stabilized by Mung Bean Protein/Whey Protein Isolate Nanoparticles: Stability and Functional Properties","authors":"Song Li, Jing Xie, Jun Mei","doi":"10.3390/coatings16050540","DOIUrl":"https://doi.org/10.3390/coatings16050540","url":null,"abstract":"Thymol has been granted “Generally Recognized as Safe” status by the US Food and Drug Administration. However, its application as a natural preservative is constrained by limitations such as poor water solubility and high volatility. In this study, a dual-protein complex was prepared using mung bean protein and whey protein isolate to stabilize thymol-loaded oil-in-water (O/W) Pickering emulsions. The results demonstrated that the dual-protein system was driven by hydrogen bonding, electrostatic attraction, and hydrophobic interactions. Compared to single-protein systems, the dual-protein Pickering emulsions possessed smaller droplet sizes, lower polydispersity indices, and higher surface charges and surface hydrophobicity. Additionally, the dual protein enhanced emulsifying activity, thermal stability, and 30-day storage stability. Notably, the complex formed a continuous three-dimensional porous network structure at the mung bean protein (MBP) to whey protein isolate (WPI) ratio of 50%:50%. Benefiting from this structure and high surface hydrophobicity, the 50%:50% formulation achieved the highest thymol encapsulation efficiency. In terms of functional properties, this optimized emulsion demonstrated notable antibacterial activity and antioxidant activity; it demonstrated antibacterial activity against Shewanella putrefaciens and Staphylococcus aureus. Furthermore, the IC50 value for the 50%:50% formulation was 192.25 ± 1.93 μg/mL (DPPH) and 161.74 ± 0.71 μg/mL (ABTS). In summary, the 50%:50% formulation enhanced the emulsifying activity, encapsulation efficiency, and bioactivity of the emulsion. This system provides an effective strategy for the stabilization and encapsulation of hydrophobic active compounds in emulsions.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"16 5","pages":"540-540"},"PeriodicalIF":0.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147967103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hemp Seed Protein-Based Emulsion Films Containing Propolis Flavonoids: Enhanced Physicochemical Properties and Preservation of Chilled Pork 含蜂胶类黄酮的大麻籽蛋白乳状膜：提高冷冻猪肉的理化性能和保存性

3区材料科学

Coatings Pub Date : 2026-04-17 DOI: 10.3390/coatings16040489

Yuhan Cui, Y Yan, Yuhang Tian, Xuan Li, Feng Xue

{"title":"Hemp Seed Protein-Based Emulsion Films Containing Propolis Flavonoids: Enhanced Physicochemical Properties and Preservation of Chilled Pork","authors":"Yuhan Cui, Y Yan, Yuhang Tian, Xuan Li, Feng Xue","doi":"10.3390/coatings16040489","DOIUrl":"https://doi.org/10.3390/coatings16040489","url":null,"abstract":"Hydrophilic colloids are ideal materials for preparing edible films; however, their intrinsic hydrophilicity leads to poor hydrophobicity in the resulting films. Emulsion-based films can significantly improve the hydrophobicity of films made from hydrophilic colloids, but this approach tends to disrupt intermolecular interactions within the film matrix. Phenolic compounds can compensate for this drawback by promoting crosslinking among film-forming polymers. In this study, hemp seed protein was used as the film-forming matrix, and rose essential oil was incorporated to prepare emulsion-based films. Different amounts of propolis flavonoids were added to investigate their effects on the physicochemical properties of the films. The results show that the addition of propolis flavonoids significantly reduced film whiteness (9%–45%), thickness (6%–37%), light transmittance (9%–60%), water vapor transmission rate (34%–65%), and peroxide value (25%–76%) of oil, while increasing tensile strength (15%–149%), elongation at break (24%–95%), Young’s modulus (26%–140%), surface hydrophobicity, thermal stability, and antioxidant and antimicrobial activities. Furthermore, pork wrapped with flavonoid-containing films exhibited inhibition of microbial growth, lipid oxidation, protein degradation, and maintained firmness. Therefore, propolis flavonoids represent a potential active ingredient for improving the physicochemical properties and preservative performance of emulsion-based films.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"16 4","pages":"489-489"},"PeriodicalIF":0.0,"publicationDate":"2026-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2079-6412/16/4/489/pdf?version=1776434081","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147878463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Zwitterionic Functionalized Negatively Charged Hydrogel/Ti6Al4V Alloy with Superior Lubrication Performance 具有优异润滑性能的两性离子功能化负电荷水凝胶/Ti6Al4V合金

3区材料科学

Coatings Pub Date : 2026-02-28 DOI: 10.3390/coatings16030297

Lingling Cui, Guang Ji, Tongchun Qin, He Liu, Yan Sheng, Haiqin Ding, Guodong Jia

引用次数: 0

Electrochemical and Optical Insights into Interfacial Connection for Fast Pollutant Removal: Experimental Study of g-C3N4/BiOCl Heterojunction for Rhb and MO Photodegradation 快速去除污染物界面连接的电化学和光学见解：g-C3N4/BiOCl异质结用于Rhb和MO光降解的实验研究

3区材料科学

Coatings Pub Date : 2026-01-21 DOI: 10.3390/coatings16010138

Hadja Kaka Abanchime Zenaba, Mi Long, Xue Liu, Mengying Xu, Wen Luo, Tian Zhang

{"title":"Electrochemical and Optical Insights into Interfacial Connection for Fast Pollutant Removal: Experimental Study of g-C3N4/BiOCl Heterojunction for Rhb and MO Photodegradation","authors":"Hadja Kaka Abanchime Zenaba, Mi Long, Xue Liu, Mengying Xu, Wen Luo, Tian Zhang","doi":"10.3390/coatings16010138","DOIUrl":"https://doi.org/10.3390/coatings16010138","url":null,"abstract":"Developing efficient heterojunction photocatalysts is essential to address the challenge of degrading persistent organic pollutants. In this study, a multi-scale characterization strategy was employed to investigate the implications of interfacial connectivity between synthesized graphitic carbon nitride (g-C3N4) /bismuth oxychloride (BiOCl)e removal of Rhodamine B (RhB) and Methyl Orange (MO). Morpho-structural characterizations, including Scanning/Transmission Electron Microscopy (SEM/TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and N2 physisorption (Brunauer–Emmett–Teller (BET)) analyses, confirmed the successful construction of an intimate interfacial contact between g-C3N4 and BiOCl. The optimized composite (15% g-C3N4/BiOCl), prepared via a one-step hydrothermal method, exhibited enhanced photocatalytic performance following pseudo-first-order kinetics described by the Langmuir–Hinshelwood model, with apparent rate constants of 0.166 min−1 for MO and 0.519 min−1 for RhB. Under visible-light irradiation, degradation efficiencies of 98% for MO (120 min) and 99% for RhB (35 min) were achieved, outperforming the pristine components. Complementary optical and electrochemical analyses indicate improved light absorption and charge-separation efficiency in the heterojunction system. In addition, the photocatalyst demonstrated good operational stability over four consecutive cycles, maintaining 91.70% activity for MO and 99.76% for RhB. Overall, this work highlights the synergistic photocatalytic g-C3N4/BiOCl heterojunction and provides a valuable insight to guide the design of advanced materials for pollutant remediation.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"16 1","pages":"138-138"},"PeriodicalIF":0.0,"publicationDate":"2026-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147908559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Durable Anti-Icing Slippery Surface with Y-Shaped Composite Porous Structure Prepared by Two-Step Anodic Oxidation 两步阳极氧化制备y型复合多孔结构耐久防冰光滑表面

3区材料科学

Coatings Pub Date : 2026-01-20 DOI: 10.3390/coatings16010135

Chanxi Yan, Gaoping Liu, Qing Zhu, Yashi Zhou, Yuan Yuan

{"title":"Durable Anti-Icing Slippery Surface with Y-Shaped Composite Porous Structure Prepared by Two-Step Anodic Oxidation","authors":"Chanxi Yan, Gaoping Liu, Qing Zhu, Yashi Zhou, Yuan Yuan","doi":"10.3390/coatings16010135","DOIUrl":"https://doi.org/10.3390/coatings16010135","url":null,"abstract":"Ice accumulation on power transmission lines poses serious threats to operational safety and can lead to substantial social and economic impacts. While various anti-icing coatings have been investigated, their performance is often limited by the effectiveness and durability of anti-icing. Slippery lubricant-infused porous surfaces (SLIPSs) have shown remarkable anti-icing properties and durability, aided by their lubricant-infused and self-healing capability. In this study, SLIPSs were successfully fabricated on aluminum substrates using a two-step anodization process. The effects of the anodizing parameter of the current density on pore diameter and depth at each stage were systematically investigated. Compared to untreated aluminum and superhydrophobic coatings (SHCs), SLIPSs presented good anti-icing properties. First, at −6 °C, droplets slid off the surface completely within 4340.5 ms without pinning, indicating sustained droplet-shedding capability. It also significantly delayed ice formation, extending the freezing time to 80 min—eight times longer than that of the untreated surface. Moreover, the SLIPSs also exhibited ultra-low ice adhesion, with an initial strength of only 6.93 kPa. Meanwhile, after 100 frosting–defrosting cycles, SLIPSs could still maintain low ice adhesion strength (<20 kPa). The prepared SLIPS with a Y-shaped pore structure demonstrates good potential for anti-icing.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"16 1","pages":"135-135"},"PeriodicalIF":0.0,"publicationDate":"2026-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2079-6412/16/1/135/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147905010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CdSe/ZnS QDs and O170 Dye-Decorated Spider Silk for pH Sensing CdSe/ZnS量子点和O170染料修饰蜘蛛丝的pH传感

3区材料科学

Coatings Pub Date : 2026-01-14 DOI: 10.3390/coatings16010110

Y.T. Tang, Hao Zhang, Y. Xu, Qixuan Wu, Jie Zhang, Chenchen Liu, Peng Yu, Guowei Yang, Hongxiang Lei

{"title":"CdSe/ZnS QDs and O170 Dye-Decorated Spider Silk for pH Sensing","authors":"Y.T. Tang, Hao Zhang, Y. Xu, Qixuan Wu, Jie Zhang, Chenchen Liu, Peng Yu, Guowei Yang, Hongxiang Lei","doi":"10.3390/coatings16010110","DOIUrl":"https://doi.org/10.3390/coatings16010110","url":null,"abstract":"Effective in situ pH sensing holds exciting prospects in environmental and biomedical applications, but still faces a great challenge. Until now, pH sensors with small size, high sensitivity, good stability and repeatability, great biosafety, wide detection range, and flexible structure have rarely been reported. Herein, we propose a novel dual-emission ratiometric fluorescent pH sensor by decorating ethyl cellulose (EC)-encapsulated CdSe/ZnS quantum dots (QDs) and oxazine 170 perchlorate (O170 dye) on the surface of the spider silk. When a 473 nm excitation light is coupled into the pH sensor, the evanescent wave transmitting along the surface of the spider silk will excite the CdSe/ZnS QDs and then the O170 dye based on the fluorescence resonance energy transfer (FRET) effect from the QDs; thus, the pH sensing of the surrounding liquid environment can be achieved in real time by collecting the photoluminescence (PL) spectra of the pH sensor and measuring the emission intensity ratio of the two fluorescent materials. The sensor has also demonstrated a high sensing sensitivity (0.775/pH unit) within a wide pH range of 1.92–12.11, as well as excellent reusability and reversibility, structure and time stability, biocompatibility, and biosafety. The proposed pH sensor has a potential application in an in situ monitor of water microenvironments, cellular metabolism, tumor microenvironments, etc.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"16 1","pages":"110-110"},"PeriodicalIF":0.0,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2079-6412/16/1/110/pdf?version=1768371241","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147898995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

PTFE-Enhanced Tribocatalytic Degradation of High-Concentration (100–500 mg/L) Rhodamine B Solutions Using TiO2 Nanoparticles 聚四氟乙烯增强TiO2纳米颗粒摩擦催化降解高浓度（100-500 mg/L）罗丹明B溶液

3区材料科学

Coatings Pub Date : 2026-01-14 DOI: 10.3390/coatings16010111

Yanhong Gu, Xi Cheng, Ruixue Wang, Yunlong Zhai, Jianguo Zhao, Yaohua Hu, P. F. Gu, Fei Cheng, Wanping Chen

{"title":"PTFE-Enhanced Tribocatalytic Degradation of High-Concentration (100–500 mg/L) Rhodamine B Solutions Using TiO2 Nanoparticles","authors":"Yanhong Gu, Xi Cheng, Ruixue Wang, Yunlong Zhai, Jianguo Zhao, Yaohua Hu, P. F. Gu, Fei Cheng, Wanping Chen","doi":"10.3390/coatings16010111","DOIUrl":"https://doi.org/10.3390/coatings16010111","url":null,"abstract":"Dye wastewaters are produced in huge amounts every year world-widely and they pose serious threats to ecosystems and human health if not treated properly. High-concentration organic dye wastewaters are usually treated through multiple steps including pretreatment and advanced treatment. In this work, TiO2 nanoparticles suspended in high-concentration rhodamine B (Rh B) solutions up to 500 mg/L have been subjected to magnetic stirring to initiate tribocatalytic degradation of Rh B. While 100 and 200 mg/L Rh B solutions can be rather thoroughly degraded in beakers with four kinds of bottom/coatings (glass, Al2O3, Ti, and PTFE), 300 mg/L Rh B solutions can only be degraded effectively in a beaker with PTFE coating. Even 400 and 500 mg/L Rh B solutions can also be degraded rather thoroughly by TiO2 nanoparticles in a PTFE-coated beaker. EPR analyses revealed that PTFE coating enhanced the formation of both hydroxyl radicals and superoxide radicals by magnetic stirring-stimulated TiO2 nanoparticles. These findings highlight the importance of the synergism between materials in friction pairs for tribocatalysis and demonstrate a one-step tribocatalytic degradation of Rh B solutions with concentrations of real Rh B wastewaters.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"16 1","pages":"111-111"},"PeriodicalIF":0.0,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2079-6412/16/1/111/pdf?version=1768377500","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147897117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and Research of a Metal Anti-Corrosion Coating Based on PDMS Reinforcement 基于PDMS增强的金属防腐涂层的制备与研究

3区材料科学

Coatings Pub Date : 2026-01-08 DOI: 10.3390/coatings16010074

Chenyan Xie, Peng Dou, Gaojie Fu, Jiaqi Wang, Zeyi Wei, Xinglin Lu, Suji Sheng, Lixin Yuan, Bin Shen

{"title":"Preparation and Research of a Metal Anti-Corrosion Coating Based on PDMS Reinforcement","authors":"Chenyan Xie, Peng Dou, Gaojie Fu, Jiaqi Wang, Zeyi Wei, Xinglin Lu, Suji Sheng, Lixin Yuan, Bin Shen","doi":"10.3390/coatings16010074","DOIUrl":"https://doi.org/10.3390/coatings16010074","url":null,"abstract":"Metal materials are widely used in power grid infrastructure, but they are prone to metal corrosion due to long-term exposure to various environmental conditions, resulting in significant losses. The existing superhydrophobic coatings have good anti-corrosion performance, but poor wear resistance. Therefore, it is extremely important to improve the wear resistance of superhydrophobic coatings. In this study, a kind of fluorine-modified SiO2 particle was prepared with pentafluorooctyltrimethoxysilane (FAS-13) as the low surface energy modifier, following the fabrication of a superhydrophobic coating on metal substrate via a PDMS-doped spray deposition method to reinforcement wear resistance property. XPS, FT-IR and Raman spectra confirmed the successful introduction of FAS-13 on SiO2 particles, as evidenced by the characteristic fluorine-related peaks. TGA revealed that the fluorine modified SiO2 (F-SiO2) particles exhibited excellent thermal stability, with an initial decomposition temperature of 354 °C. From the perspective of surface morphology, the relevant data indicated a peak-to-valley height difference of only 88.7 nm, with Rq of 11.9 nm and Ra of 8.86 nm. And it also exhibited outstanding superhydrophobic property with contact angle (CA) of 164.44°/159.48°, demonstrating remarkable self-cleaning performance. And it still maintained CA of over 150° even after cyclic abrasion of 3000 cm with 800 grit sandpaper under a 100 g load, showing exceptional wear resistance. In addition, it was revealed that the coated electrode retained a high impedance value of 8.53 × 108 Ω·cm2 at 0.1 Hz after 480 h of immersion in 5 wt% NaCl solution, with the CPE exponent remaining close to unity (from 1.00 to 0.97), highlighting its superior anti-corrosion performance and broad application prospects for metal corrosion prevention.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"16 1","pages":"74-74"},"PeriodicalIF":0.0,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147909053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surface Property Evolution of Pigmented Chinese Lacquer Coatings During Mercury Lamp-Induced Photoaging 水银灯诱导光老化过程中漆膜表面性能的演变

3区材料科学

Coatings Pub Date : 2025-12-27 DOI: 10.3390/coatings16010031

Yunxi Nie, Y. Z. Chen, X. Liu

{"title":"Surface Property Evolution of Pigmented Chinese Lacquer Coatings During Mercury Lamp-Induced Photoaging","authors":"Yunxi Nie, Y. Z. Chen, X. Liu","doi":"10.3390/coatings16010031","DOIUrl":"https://doi.org/10.3390/coatings16010031","url":null,"abstract":"This study examines the pigment-dependent photoaging behavior of laboratory-prepared mock-up Chinese lacquer coatings colored with cinnabar, orpiment, and lapis lazuli under high-pressure mercury-lamp irradiation. Colorimetric results showed rapid changes within the first three days, with maximum ΔE values of 14.05 (red), 16.74 (yellow), and 17.97 (blue) after 30 days. Cinnabar-based films exhibited the highest color stability, whereas orpiment and lapis-lazuli coatings underwent pronounced hue shifts and chroma increases. Gloss loss and surface roughness evolution displayed a strong negative correlation: orpiment coatings experienced the most severe degradation, with gloss decreasing by over 60% and surface roughness increasing by approximately 70%, while cinnabar coatings showed the least decline (≈55% gloss loss; ≈27% roughness increase). SEM analysis further revealed extensive cracking and particle fragmentation in orpiment films, moderate surface disruption in lapis-lazuli films, and minimal microstructural damage in cinnabar films. Non-invasive reflection-mode FTIR spectroscopy confirmed these trends, showing minimal chemical change in cinnabar coatings but significant carbonyl growth, C–O–C band broadening, and aliphatic chain cleavage in orpiment and lapis-lazuli coatings. These results highlight the critical role of pigment chemistry in modulating UV-induced degradation pathways. Integrating optical, morphological, and chemical evidence, this study establishes a clear pigment-dependent degradation mechanism and provides valuable guidance for evaluating the long-term stability of lacquered cultural heritage and optimizing modern lacquer formulations.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"16 1","pages":"31-31"},"PeriodicalIF":0.0,"publicationDate":"2025-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2079-6412/16/1/31/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147921564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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