Progress in Organic Coatings最新文献

{"title":"Robust superhydrophobic bilayer coating: Long-term anti-corrosion and anti-fouling resistance enabled by POSS star cross-linking and fluoride-modified SiO2 nanoparticles specific synergies","authors":"Lijian Liu ,&nbsp;Haihua Wang ,&nbsp;Xixi Hao ,&nbsp;Qinghua Zhang ,&nbsp;Guiqiang Fei ,&nbsp;Yihao Duan ,&nbsp;Liyu Sun","doi":"10.1016/j.porgcoat.2024.108919","DOIUrl":"10.1016/j.porgcoat.2024.108919","url":null,"abstract":"<div><div>Durable superhydrophobic coating has become frequently investigated and reported, however, achieving concurrent mechanical robustness, long-term anti-corrosive and anti-fouling functionalities remains a formidable challenge. In this study, a polymer nanocomposite coating was created through the star crosslinking of polyhedral oligomeric silsesquioxane (POSS) and fluorinated polyimide (FPI) prepolymer. Subsequently, a superhydrophobic bilayer was created by using the aforementioned coating as base coating, hydrophobic polyolefin (POA) with high toughness and strong adhesive was selected to binder fluoride-modified SiO₂ nanoparticles (F-SiO₂) to construct robust superhydrophobic topcoat and simultaneously enhance the interfacial bonding between topcoat and base coating. Notably, the bilayer superhydrophobic coating exhibited robust mechanical durability, retaining its superhydrophobicity even after 100 cycles of sandpaper friction and 80 cycles of tape peeling. After a 50-day salt spray test, the superhydrophobic FPI/POSS@POA/F-SiO₂ bilayer coating demonstrated exemplary corrosion resistance, the low frequency impedance modulus (|Z|_0.01Hz) was still as high as 7.04 × 10¹⁰ Ω·cm², which is one order of magnitude higher than that of FPI/POSS-4 coating (3.17 × 10⁹ Ω·cm²) and three orders of magnitude higher than pure FPI coating (1.82 × 10⁷ Ω·cm²). In addition, the superhydrophobic coating also demonstrated self-cleaning and anti-fouling properties. The enhanced comprehensive performance for the superhydrophobic FPI/POSS@POA/F-SiO₂ bilayer coating can be ascribed to the improved compactness and physical barrier resulted from the POSS star crosslinking, as well as the strong inhibitory effect endowed by the robust superhydrophobic surface. This study offers a fresh perspective on the preparation of superhydrophobic bilayer coatings with outstanding long-term anti-corrosive and anti-fouling attributes, showcasing their potential and prospective practical applications.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"198 ","pages":"Article 108919"},"PeriodicalIF":6.5,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657070","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":"High gas barrier of clay/graphene oxide/chitosan multilayer nanocoatings at high humidity","authors":"Alessia Cabrini ,&nbsp;Sarah G. Fisher ,&nbsp;Ethan T. Iverson ,&nbsp;Pierfrancesco Cerruti ,&nbsp;Luigi De Nardo ,&nbsp;Gennaro Gentile ,&nbsp;Marino Lavorgna ,&nbsp;Jaime C. Grunlan","doi":"10.1016/j.porgcoat.2024.108929","DOIUrl":"10.1016/j.porgcoat.2024.108929","url":null,"abstract":"<div><div>Improving the barrier properties of bio-based polymers is very desirable for food packaging applications. With this in mind, a gas barrier thin film comprised of graphene oxide (GO), montmorillonite (MMT) clay, and chitosan (CH) was prepared using layer-by-layer assembly. A 120 nm thick CH/MMT/CH/GO quadlayer nanocoating reduces the oxygen permeability of a 179 μm polyethylene terephthalate sheet from 17.6×10⁻¹⁶ to 0.21×10⁻¹⁶ cm³ cm cm⁻² s⁻¹ Pa⁻¹ at 0 % RH, and from 13.4×10⁻¹⁶ to 0.42×10⁻¹⁶ cm³ cm cm⁻² s⁻¹ Pa⁻¹ at 90 % RH. This two orders of magnitude reduction in permeability in both dry and high humid conditions is caused by the hybrid multilayer structure, with a high loading of oriented, densely packed nanoplatelets. This study demonstrates the potential of combining different anionic nanoplatelets in the assembled nanocoatings to improve the gas barrier performance of chitosan at high humidity.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"198 ","pages":"Article 108929"},"PeriodicalIF":6.5,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657069","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":"Rapid UV/thermal curing of waterborne difunctional-group melamine resin coating and its excellent functionality","authors":"Lijiu Cao ,&nbsp;Xu Ma ,&nbsp;Yufang Chen ,&nbsp;Shuai Wang ,&nbsp;Yue Hu ,&nbsp;Yunpeng Gong ,&nbsp;Tao Jin","doi":"10.1016/j.porgcoat.2024.108932","DOIUrl":"10.1016/j.porgcoat.2024.108932","url":null,"abstract":"<div><div>Melamine resin coatings (MF coatings) are usually cured by thermal curing (TC) or acid/ thermal curing (ATC) method. That exists some defects such as operation cumbersomely, curing slowly, easy to shrink and brittle, etc., which hinders the practical applications of MF in the field of painting. In this paper, a waterborne melamine resin oligomer (dMFO) with a difunctional structure (allyl group and hydroxymethyl group) was designed and prepared. The gelation of the dMFO can quickly accomplish and obtain a cured MF coating with excellent functionality by the “UV/thermal “curing method. The results show that when the dosage of photoinitiator 1-hydroxy-cyclohexyl-phenyl ketone (Pi184) is 3 % relative to the mass of dMFO, the MF coating can be cured in about 11 min. The tensile strength of the coating reaches 8.24 MPa, the impact resistance height is 180 mm, the adhesion is up to 5.51 MPa, the pencil hardness is 5H, the water contact angle can reach 113°, the water resistance exceeds 14 h, and the limiting oxygen index is 30.87 %. The MF coating was prepared from dMFO displays excellent characteristics such as structural toughness, self-hydrophobicity, and intrinsic flame retardancy. In addition, the MF coating also has good self-cleaning performance, anti-corrosion property, and chemical corrosion resistance. The analysis suggests that the MF coating has an in-situ interpenetrating network structure (IPN) formed by the interpenetration of thermoplastic segments and thermosetting network structures. The effective synergy between the molecular chain segments of these two structures facilitates the structural optimization and performance enhancement of the MF coating. The work presented in this paper has laid a key technical foundation for the large-scale application of MF coatings, which holds promising prospects for industrial application and significant commercial value.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"198 ","pages":"Article 108932"},"PeriodicalIF":6.5,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657075","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":"Self-healable spray paint coatings based on polyurethanes with thermal stability: Effects of disulfides and diisocyanates","authors":"Sebin Jin ,&nbsp;Hyeonyeol Jeon ,&nbsp;Seon-Mi Kim ,&nbsp;Minkyung Lee ,&nbsp;Chanwook Park ,&nbsp;Yongtae Joo ,&nbsp;Jaesik Seo ,&nbsp;Dongyeop X. Oh ,&nbsp;Jeyoung Park","doi":"10.1016/j.porgcoat.2024.108931","DOIUrl":"10.1016/j.porgcoat.2024.108931","url":null,"abstract":"<div><div>As the interest in self-healing and scratch-resistant coatings has increased, studies on incorporating dynamic covalent bonds in protective elastomeric coating materials have increased. The incorporation of reversible disulfide bonds into polyurethane (PU) elastomers imparts self-healing property and recyclability, which not only reduce maintenance costs but also extend the service lives of the coated products. In this study, we developed two-component self-healing PU spray paint materials with superior healing properties and thermal stability. This achievement involved the synthesis of oligomeric precursor diols of PU incorporating disulfides of different molecular weights and controlling the hardener ratio in the final spray-coating material. Variations in the scratch-healing ability and stability of the coating films were investigated based on the type of the disulfide employed in the aromatic and aliphatic moieties and the combination of diisocyanates. Among the tested specimens, a coating film fabricated from a precursor denoted as H13 (molar feed ratio of isophorone diisocyanate:bis(4-hydroxyphenyl)disulfide:carbonate-type soft diol = 10:5:8) cured with a hardener (molar ratio of methylene diphenyl diisocyanate:isophorone diisocyanate = 1:1) showed excellent healing performance, showing &gt;95 % scratch recovery within 2 h at 30 °C. It also exhibited transparency, solvent resistance, and thermal stability.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"198 ","pages":"Article 108931"},"PeriodicalIF":6.5,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657061","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":"Preparation and oil-water separation performance of lignin-based durable superhydrophobic petaloid structure inspired from springtail cuticle surface","authors":"Mingdong Yu,&nbsp;Chunyue Ma,&nbsp;Changmei Liao,&nbsp;Yining Wang,&nbsp;Dongzhi Wang","doi":"10.1016/j.porgcoat.2024.108907","DOIUrl":"10.1016/j.porgcoat.2024.108907","url":null,"abstract":"<div><div>Inspired by the natural surface adaptations of springtails (Collembola), we developed a novel lignin-coated nanoparticle system with a petaloid porous structure that mimics their air-retention and water-repelling capabilities. The biomimetic materials exhibit remarkable superhydrophobicity (CA_water ≈ 160°) and superoleophilicity (CA_oil ≈ 0°), crucial for enhancing selective oil adsorption. The unique structure traps air, ensuring excellent buoyancy and stability even in submerged conditions, while offering resistance to aggressive solvents. Additionally, the nanoparticles possess magnetic responsiveness, enabling precise manipulation in oil-water separation processes. This functionality is critical for a variety of industrial and environmental applications. In performance tests, the material achieved an oil-water separation efficiency of 97 %, with a permeation flux of 850 Lm⁻² h⁻¹. Even after multiple cycles, it maintained high separation efficiency and robustness, enduring chemically harsh environments. Our approach presents a highly durable and efficient solution to complex oil-water separation challenges, advancing the field of smart material applications.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"198 ","pages":"Article 108907"},"PeriodicalIF":6.5,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656430","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":"Novel fluorobenzimidazole-assisted heat resistant anticorrosion copper surface for high-density interconnected printed circuit boards","authors":"Xuewen Zhuang ,&nbsp;Xingshang Weng ,&nbsp;Zhongming Chen ,&nbsp;Weijian Chen ,&nbsp;Zongmei Yang ,&nbsp;Xiaochun Zhang","doi":"10.1016/j.porgcoat.2024.108877","DOIUrl":"10.1016/j.porgcoat.2024.108877","url":null,"abstract":"<div><div>Self-assembled organic films of imidazole derivatives are vital for metal surface modification, but their effectiveness in the commercialization of high-density copper interconnects remains limited. To enhance thermal and chemical stability, we synthesized five fluorobenzimidazole monomers by integrating fluorine into the imidazole structure using a solvent-free method. Notably, the 5-chloro-2-(2-chloro-4-fluorobenzyl)-1H-benzo[<em>d</em>]imidazole (5224FIM) demonstrated an impressive inhibition efficiency of 95.00 %, forming a robust barrier approximately 4450 Å thick, which effectively withstands damage under high temperature and humidity. X-ray photoelectron spectroscopy (XPS) analysis revealed that the oxygen content in sample 5442FIM was 9.02 %, the lowest among the samples, while the nitrogen content was 8.19 %, indicating a substantial presence of imidazole molecules. In comparison to non-substituted benzimidazole films, these fluorine-enhanced self-assembled films on copper exhibited superior heat and moisture resistance. Notably, printed circuit boards coated with 5224FIM demonstrated excellent performance in 72-h salt spray and 245 °C tin immersion solderability tests, highlighting their enhanced surface protection capabilities.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"198 ","pages":"Article 108877"},"PeriodicalIF":6.5,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657074","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":"Styrene-butadiene-styrene-based nanocomposites as self-healable antibacterial coatings","authors":"Aatif Ijaz ,&nbsp;Ghazaleh Azizi Saadatlou ,&nbsp;Cansu M. Yenici ,&nbsp;Yagiz Morova ,&nbsp;Pinar Tatar Guner ,&nbsp;Alphan Sennaroglu ,&nbsp;A. Levent Demirel ,&nbsp;Safacan Kolemen","doi":"10.1016/j.porgcoat.2024.108914","DOIUrl":"10.1016/j.porgcoat.2024.108914","url":null,"abstract":"<div><div>This study presents the development of self-healing antibacterial polymeric composite coatings to minimize infection risks and ensure adaptability for large spaces by using readily available materials and scalable, efficient fabrication techniques. These coatings were prepared by incorporating 300–400 nm solid silica particles capped with a polydopamine layer of ~40 nm thickness and decorated with silver nanoparticles within a styrene-butadiene-styrene matrix. The aqueous dispersion of filler particles upon exposure to near-infrared 808 nm light exhibits a temperature increase of ~15 °C caused by the photothermal activity of polydopamine in synergy with silver nanoparticles. This photothermal activity of fillers helps to achieve the complete healing of micron-sized scratches of nanocomposite films with light intensities as low as 1.19 W/cm² over 10 min (total energy fluence of 716 J/cm²), demonstrating promising results for real-world applications. Additionally, the coatings exhibit significant enhancement in antibacterial activity, reducing bacterial colony counts by &gt;99.9 %. These findings underscore the potential of such coatings to reduce the risk of pathogenic infections in clinical settings while offering sustainable and eco-friendly solutions.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"198 ","pages":"Article 108914"},"PeriodicalIF":6.5,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656429","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":"Exploring the potential of plant extracts as corrosion inhibitors: A comprehensive review","authors":"Yuanxing Li ,&nbsp;Yiwen Chen ,&nbsp;Caoxu Wang ,&nbsp;Yan Li ,&nbsp;Yue Wu","doi":"10.1016/j.porgcoat.2024.108915","DOIUrl":"10.1016/j.porgcoat.2024.108915","url":null,"abstract":"<div><div>With the increasing importance of green chemistry and demand for sustainable technologies, plant extract-based corrosion inhibition systems have garnered significant attention. Previous reviews summarized the performance of various plant extracts as corrosion inhibitors but lacked systematic comparison and identification of key chemical constituents. To address these shortcomings, this review first outlines the extraction process of plant extracts as corrosion inhibitors, followed by a general overviewof test methods and possible working mechanisms used to investigate their corrosion inhibition properties. Emphasis is then laid on their applications in marine and acid environments, presenting differences in corrosion inhibition efficiency and investigation of effective chemicals in various extracts. Moreover, we discuss the long-term stability of plant extracts and synergistic effects with other corrosion inhibitors, and we conclude by suggesting current shortcomings in the field to guide the design and application of novel green corrosion inhibitors in the future.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"198 ","pages":"Article 108915"},"PeriodicalIF":6.5,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657073","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":"Recent advances in the application of chitosan nanoparticles for the modification of textiles","authors":"Wendhy Carolina Vicente,&nbsp;Larissa Nardini Carli,&nbsp;Patrícia Bulegon Brondani","doi":"10.1016/j.porgcoat.2024.108910","DOIUrl":"10.1016/j.porgcoat.2024.108910","url":null,"abstract":"<div><div>The textile industry constantly demands innovative products, including developing functional textiles that can be produced by several finishing processes, maintaining the desired qualities of the fabric, and modifying the undesired ones. Methodologies applying chitosan nanoparticles (ChiNps) on the fiber are attracting much interest. Chitosan is a renewable, biocompatible, and biodegradable polysaccharide capable of providing antimicrobial activity to textiles. Besides that, ChiNps can improve dyeing processes and fabric resistance and confer other features, such as flame-retardant capacity and UV protection. Despite the importance of textile modification using ChiNps, the literature needs a review focused on chemical interactions and methods, crossing information with properties and durability. This review presents the main techniques used to prepare ChiNps for further application on textiles. It focuses on the recent advances and perspectives of the publications of the last five to six years concerning the general application of ChiNps to the surface of textiles. The publications are organized by the type of ChiNps interaction with the fabric, including intermolecular interaction or covalent bonds and research combining ChiNps with metallic nanoparticles. Most studies use ionic cross-linking to form ChiNps, a more straightforward methodology. Furthermore, ChiNps are incorporated into the surface of fabrics, primarily using intermolecular interactions. For this reason, pure synthetic fabrics, which are less polar, are much less precisely used with ChiNps. However, some promising reactions might overcome these inconveniences, including covalent bonds or the association of ChiNps and metal or metal oxide nanoparticles.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"198 ","pages":"Article 108910"},"PeriodicalIF":6.5,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657072","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":"Multifunctional bionic hydrophobic cotton fabrics modified with cationic nano-SiO2/polyurethane acrylate","authors":"Biao Gu,&nbsp;Hanzhe Song,&nbsp;Xiaodong Jiang,&nbsp;Changhai Xu,&nbsp;Jinmei Du","doi":"10.1016/j.porgcoat.2024.108912","DOIUrl":"10.1016/j.porgcoat.2024.108912","url":null,"abstract":"<div><div>In recent years, SiO₂ has gained widespread application in the hydrophobic finishing of cotton textiles due to its exceptional versatility and robust controllability. However, the inherent negative charge on the surface of SiO₂ results in inadequate adhesion on fabrics and incompatibility with cationic hydrophobic agents. In this work, a cationic nano-silica (DI-SiO₂) material was prepared by introducing cationic groups and reactive groups onto the silica surface using silane coupling agents to enhance the compatibility between silica and cationic polyurethane acrylate as well as the durability of hydrophobic cotton fabrics. It was found that DI-SiO₂ exhibits a significantly high zeta potential (40 mV ± 5 mV) and excellent compatibility in polyurethane acrylate dispersions without obvious demulsification and sedimentation after 24 h of storage. The as-prepared water-repellent agent consisting of DI-SiO₂ and polyurethane acrylate could chemically bond to cotton fabrics, thereby forming a uniform, robust, and long-lasting water-repellent film on the fabric surface with the water contact angle (WCA) exceeding 150°. In addition, the hydrophobic cotton fabric exhibited superior robustness and durability, maintaining high water repellency (WCA &gt; 125°) after treatment with acids, alkalis, organic solvents, UV irradiation, abrasion, and repeated washing. More importantly, the modified cotton fabric possesses excellent self-cleaning, breathability, moisture permeability, and oil-water separation properties. These outstanding features render it highly valuable for applications in fields such as mountaineering and camping.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"198 ","pages":"Article 108912"},"PeriodicalIF":6.5,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657087","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}