Progress in Organic Coatings最新文献

英文中文

Modifying commercial water-based acrylic paint with Rice husk-derived silica aerogel fillers for building thermal insulation

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2025-02-04 DOI: 10.1016/j.porgcoat.2025.109114

Zulhelmi Alif Abdul Halim, Norhayati Ahmad, Muhamad Azizi Mat Yajid

For building retrofitting and energy conservation, thermal insulation coatings provide a significant advantage over mineral wool due to their ease of spray application on complex 3D shapes. This study investigates the use of rice husk derived silica aerogel (SA) as a low-cost thermal insulation additive in commercial water-based acrylic paint. The highly porous SA with nanostructured closed pores significantly reduces thermal conductivity by effectively inhibiting heat transfer through the paint coating. The supercritically-dried SA was methyl-silanized to achieve a balance of hydrophobicity and maintain a high silanol density, enabling its compatibility within the water-based emulsion. The SA particles were directly added at 20, 40, and 60 vol% into the emulsion, followed by spray coating onto a bulk substrate resulted in a 1.3 ± 0.2 mm dry film thickness. The relationship between SA volume fraction on the paint properties was investigated through a comprehensive evaluation of aesthetic, mechanical, and thermal characteristics. The introduction of SA did not substantially alter the original paint color, although it increased surface roughness due to SA aggregation. These surface aggregates effectively impede heat transfer and contribute to the formation of a thermally insulating char layer during combustion. Concurrently, the combination of preserved SA porosity and surface hydrophobicity endowed the modified paint with low thermal conductivity (0.11–0.07 W/mK), high cohesive strength (1.3–2.7 MPa), and a high-water contact angle (θ° = 110°).

{"title":"Modifying commercial water-based acrylic paint with Rice husk-derived silica aerogel fillers for building thermal insulation","authors":"Zulhelmi Alif Abdul Halim, Norhayati Ahmad, Muhamad Azizi Mat Yajid","doi":"10.1016/j.porgcoat.2025.109114","DOIUrl":"10.1016/j.porgcoat.2025.109114","url":null,"abstract":"<div><div>For building retrofitting and energy conservation, thermal insulation coatings provide a significant advantage over mineral wool due to their ease of spray application on complex 3D shapes. This study investigates the use of rice husk derived silica aerogel (SA) as a low-cost thermal insulation additive in commercial water-based acrylic paint. The highly porous SA with nanostructured closed pores significantly reduces thermal conductivity by effectively inhibiting heat transfer through the paint coating. The supercritically-dried SA was methyl-silanized to achieve a balance of hydrophobicity and maintain a high silanol density, enabling its compatibility within the water-based emulsion. The SA particles were directly added at 20, 40, and 60 vol% into the emulsion, followed by spray coating onto a bulk substrate resulted in a 1.3 ± 0.2 mm dry film thickness. The relationship between SA volume fraction on the paint properties was investigated through a comprehensive evaluation of aesthetic, mechanical, and thermal characteristics. The introduction of SA did not substantially alter the original paint color, although it increased surface roughness due to SA aggregation. These surface aggregates effectively impede heat transfer and contribute to the formation of a thermally insulating char layer during combustion. Concurrently, the combination of preserved SA porosity and surface hydrophobicity endowed the modified paint with low thermal conductivity (0.11–0.07 W/mK), high cohesive strength (1.3–2.7 MPa), and a high-water contact angle (θ° = 110°).</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"201 ","pages":"Article 109114"},"PeriodicalIF":6.5,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099326","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}

引用次数: 0

Quantitative analysis of nanomechanical properties of polyhydroxyalkanoate polymer films

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2025-02-03 DOI: 10.1016/j.porgcoat.2025.109092

Fares D.E. Ghorabe , Ashish T.S. Ireddy , Pavel Zun , Mikhail Zhukov , Dmitry A. Kozodaev , Tatiana G. Volova , Ekaterina I. Shishatskaya , Ekaterina V. Skorb

The mechanical properties of polymers, particularly at the nanoscale, are critical for their performance in various applications. This study investigates the nanomechanical properties of three polyhydroxyalkanoate (PHA) polymers using Atomic Force Microscopy (AFM): poly(3-hydroxybutyrate) [(P3HB)], poly(3-hydroxybutyrate-co-valerate) [(P3HBV)], and poly(3-hydroxybutyrate-co-4-hydroxybutyrate) [(P3HB4HB)]. In addition, three different thicknesses of P3HBV films (10 μm, 30 μm, and 60 μm) were analyzed, labeled as 10-P3HBV, 30-P3HBV, and 60-P3HBV, respectively. AFM-based force-distance curves allowed for the precise measurement of surface properties; the investigated material was analyzed to determine the surface Young's modulus (using the Derjaguin–Muller–Toporov (DMT) method), adhesion, stiffness, and height domains.

The results reveal that polymer films composition and thickness significantly influence surface nanomechanical characteristics, pore size, wettability, and material crystallinity. Thicker films exhibited distinct mechanical and surface property profiles, emphasizing the role of polymer chain interactions and structural organization. These findings underscore the importance of tailoring polymer composition and structural parameters to optimize their mechanical properties for targeted applications, particularly in the biomedical field. This comprehensive nanoscale characterization provides valuable insights into the design and developing of PHA-based materials for diverse technological and biomedical uses.

{"title":"Quantitative analysis of nanomechanical properties of polyhydroxyalkanoate polymer films","authors":"Fares D.E. Ghorabe , Ashish T.S. Ireddy , Pavel Zun , Mikhail Zhukov , Dmitry A. Kozodaev , Tatiana G. Volova , Ekaterina I. Shishatskaya , Ekaterina V. Skorb","doi":"10.1016/j.porgcoat.2025.109092","DOIUrl":"10.1016/j.porgcoat.2025.109092","url":null,"abstract":"<div><div>The mechanical properties of polymers, particularly at the nanoscale, are critical for their performance in various applications. This study investigates the nanomechanical properties of three polyhydroxyalkanoate (PHA) polymers using Atomic Force Microscopy (AFM): poly(3-hydroxybutyrate) [(P3HB)], poly(3-hydroxybutyrate-<em>co</em>-valerate) [(P3HBV)], and poly(3-hydroxybutyrate-co-4-hydroxybutyrate) [(P3HB4HB)]. In addition, three different thicknesses of P3HBV films (10 μm, 30 μm, and 60 μm) were analyzed, labeled as 10-P3HBV, 30-P3HBV, and 60-P3HBV, respectively. AFM-based force-distance curves allowed for the precise measurement of surface properties; the investigated material was analyzed to determine the surface Young's modulus (using the Derjaguin–Muller–Toporov (DMT) method), adhesion, stiffness, and height domains.</div><div>The results reveal that polymer films composition and thickness significantly influence surface nanomechanical characteristics, pore size, wettability, and material crystallinity. Thicker films exhibited distinct mechanical and surface property profiles, emphasizing the role of polymer chain interactions and structural organization. These findings underscore the importance of tailoring polymer composition and structural parameters to optimize their mechanical properties for targeted applications, particularly in the biomedical field. This comprehensive nanoscale characterization provides valuable insights into the design and developing of PHA-based materials for diverse technological and biomedical uses.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"201 ","pages":"Article 109092"},"PeriodicalIF":6.5,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099324","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}

引用次数: 0

Strong substrate adhesive and self-cleaning polysilsesquioxane coating with excellent mechanical property and chemical stability

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2025-02-03 DOI: 10.1016/j.porgcoat.2025.109101

Jialong Zhu , Yuanchuan Ma , Jiao Wei , Yang Hu , Haolan Gou , Hailong Wang , Wenyu Fang , Hong Fan , Jintao Wan

Developing hard yet flexible organic-inorganic hybrid coating with enhanced substrate adhesion and self-cleaning ability is of the great interest to many application scenarios such as foldable display devices. To this end, herein polysilsesquioxanes (PGSQ-F) with perfluorinated alkyl and epoxy moieties are synthesized and then coated on the amine-modified substrates (glass and PET) to create strong interfaces by the epoxy-amine reaction. After UV curing in the presence of a photoinitiator, the epoxy group of PGSQ-F undergoes a ring-opening polymerization to form a highly cross-linked network. The adhesion of PGSQ-F coating to the treated glass and PET substrates is as high as 3.9 ± 0.4 MPa and 1.5 ± 0.3 MPa, respectively. The high adhesive strength enhances the coating's resistance to various solvents. Moreover, the obtained coatings display the high pencil hardness (9H pencil hardness), excellent flexibility (1 mm bending diameter) and high transmittance (89.5 % 550 nm). In addition, the perfluorinated alkyl chains from PGSQ-F spontaneously aggregate onto the coating surface, endowing the coating with omniphobic feature, with water and n-hexane contact angle of 115.1 ± 0.7° and 70.2 ± 0.5°, respectively, which account for their outstanding antismudge and self-cleaning properties.

{"title":"Strong substrate adhesive and self-cleaning polysilsesquioxane coating with excellent mechanical property and chemical stability","authors":"Jialong Zhu , Yuanchuan Ma , Jiao Wei , Yang Hu , Haolan Gou , Hailong Wang , Wenyu Fang , Hong Fan , Jintao Wan","doi":"10.1016/j.porgcoat.2025.109101","DOIUrl":"10.1016/j.porgcoat.2025.109101","url":null,"abstract":"<div><div>Developing hard yet flexible organic-inorganic hybrid coating with enhanced substrate adhesion and self-cleaning ability is of the great interest to many application scenarios such as foldable display devices. To this end, herein polysilsesquioxanes (PGSQ-F) with perfluorinated alkyl and epoxy moieties are synthesized and then coated on the amine-modified substrates (glass and PET) to create strong interfaces by the epoxy-amine reaction. After UV curing in the presence of a photoinitiator, the epoxy group of PGSQ-F undergoes a ring-opening polymerization to form a highly cross-linked network. The adhesion of PGSQ-F coating to the treated glass and PET substrates is as high as 3.9 ± 0.4 MPa and 1.5 ± 0.3 MPa, respectively. The high adhesive strength enhances the coating's resistance to various solvents. Moreover, the obtained coatings display the high pencil hardness (9H pencil hardness), excellent flexibility (1 mm bending diameter) and high transmittance (89.5 % 550 nm). In addition, the perfluorinated alkyl chains from PGSQ-F spontaneously aggregate onto the coating surface, endowing the coating with omniphobic feature, with water and n-hexane contact angle of 115.1 ± 0.7° and 70.2 ± 0.5°, respectively, which account for their outstanding antismudge and self-cleaning properties.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"201 ","pages":"Article 109101"},"PeriodicalIF":6.5,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156046","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}

引用次数: 0

Preparation of flame retardant and anti-dripping PET fabric based on heme chloride dyeing and mussel-inspired strategy

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2025-02-03 DOI: 10.1016/j.porgcoat.2025.109097

Yongli Zhang , Chunlong Zuo , Xiaoyu Liu , Ziyin Ye , Wei Tan , Ping Li , Yuanlin Ren , Xiaohui Liu

Polyethylene terephthalate (PET) fibers are widely used in many fields, but their flammability and molten droplet characteristics during combustion pose a significant safety risk. To address the issue, a novel approach was developed to enhance the flame retardant and anti-dripping performances of PET fabric through a combination of dyeing and mussel-inspired strategy. First, PET fabric was directly dyed with heme chloride (HC) to produce dyed PET fabric (HC-PET), which was then treated by a mussel-inspired tannic acid-based flame retardant (TAPP) and an impregnation-drying-curing process to prepare flame retardant PET fabric (FR-PET). The results indicated that the total heat release (THR) and peak smoke production rate (PSPR) of FR-PET were decreased by 22.8 % and 49.7 %, respectively, and the limiting oxygen index (LOI) was increased from 21 % to 29.8 %, showing good flame retardant properties. Additionally, the UV resistance and antibacterial performances of FR-PET were also significantly improved. In summary, this study provided a feasible approach for the preparation of multifunctional PET textiles with dyeing, flame retardant, anti-dripping, UV resistance and antibacterial performances.

{"title":"Preparation of flame retardant and anti-dripping PET fabric based on heme chloride dyeing and mussel-inspired strategy","authors":"Yongli Zhang , Chunlong Zuo , Xiaoyu Liu , Ziyin Ye , Wei Tan , Ping Li , Yuanlin Ren , Xiaohui Liu","doi":"10.1016/j.porgcoat.2025.109097","DOIUrl":"10.1016/j.porgcoat.2025.109097","url":null,"abstract":"<div><div>Polyethylene terephthalate (PET) fibers are widely used in many fields, but their flammability and molten droplet characteristics during combustion pose a significant safety risk. To address the issue, a novel approach was developed to enhance the flame retardant and anti-dripping performances of PET fabric through a combination of dyeing and mussel-inspired strategy. First, PET fabric was directly dyed with heme chloride (HC) to produce dyed PET fabric (HC-PET), which was then treated by a mussel-inspired tannic acid-based flame retardant (TAPP) and an impregnation-drying-curing process to prepare flame retardant PET fabric (FR-PET). The results indicated that the total heat release (THR) and peak smoke production rate (PSPR) of FR-PET were decreased by 22.8 % and 49.7 %, respectively, and the limiting oxygen index (LOI) was increased from 21 % to 29.8 %, showing good flame retardant properties. Additionally, the UV resistance and antibacterial performances of FR-PET were also significantly improved. In summary, this study provided a feasible approach for the preparation of multifunctional PET textiles with dyeing, flame retardant, anti-dripping, UV resistance and antibacterial performances.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"201 ","pages":"Article 109097"},"PeriodicalIF":6.5,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099325","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}

引用次数: 0

Assessment of matting agent effect on polyurethane coatings' perceived blackness through geometric properties modeling: An AI approach

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2025-02-01 DOI: 10.1016/j.porgcoat.2024.108963

R. Jafari , A. Rabihavi , M. Mahdavian , M. Nasiri

This study investigates the effect of matting agent on the perceived blackness of polyurethane automotive finishes by examining their impact on geometric properties using an AI-based neural network model. Black polyurethane coatings were prepared with varying gloss levels by incorporating different amounts of matting agent. Observers ranked these samples based on perceived blackness using the pair comparison method. The data features included the colorimetric properties and geometric attributes of the black polyurethane panels, with visual scales obtained as target values. Various neural networks were employed: Single-Layer Neural Network for linear regression, Multi-Layer Neural Network, Deep Neural Network, and Dropout-Enhanced Deep Neural Network for non-linear regression. Feature selection was applied to eliminate irrelevant or redundant features. The findings indicated that the Multi-Layer Neural Network for non-linear regression, utilizing geometric features, achieved favorable evaluation metrics, including mean squared errors, and R² values. Additionally, this model predicted the visual scale values more accurately compared to other neural network models. By simulating this behavior, the research effectively eliminates the need for time-consuming visual assessment experiments traditionally used for blackness evaluations in industrial settings. This method greatly simplifies the evaluation process, conserving both time and resources while maintaining reliable and precise assessments.

{"title":"Assessment of matting agent effect on polyurethane coatings' perceived blackness through geometric properties modeling: An AI approach","authors":"R. Jafari , A. Rabihavi , M. Mahdavian , M. Nasiri","doi":"10.1016/j.porgcoat.2024.108963","DOIUrl":"10.1016/j.porgcoat.2024.108963","url":null,"abstract":"<div><div>This study investigates the effect of matting agent on the perceived blackness of polyurethane automotive finishes by examining their impact on geometric properties using an AI-based neural network model. Black polyurethane coatings were prepared with varying gloss levels by incorporating different amounts of matting agent. Observers ranked these samples based on perceived blackness using the pair comparison method. The data features included the colorimetric properties and geometric attributes of the black polyurethane panels, with visual scales obtained as target values. Various neural networks were employed: Single-Layer Neural Network for linear regression, Multi-Layer Neural Network, Deep Neural Network, and Dropout-Enhanced Deep Neural Network for non-linear regression. Feature selection was applied to eliminate irrelevant or redundant features. The findings indicated that the Multi-Layer Neural Network for non-linear regression, utilizing geometric features, achieved favorable evaluation metrics, including mean squared errors, and R<sup>2</sup> values. Additionally, this model predicted the visual scale values more accurately compared to other neural network models. By simulating this behavior, the research effectively eliminates the need for time-consuming visual assessment experiments traditionally used for blackness evaluations in industrial settings. This method greatly simplifies the evaluation process, conserving both time and resources while maintaining reliable and precise assessments.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"199 ","pages":"Article 108963"},"PeriodicalIF":6.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143144755","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}

引用次数: 0

Curing reactions of epoxy powder coatings in perspectives of chemical mechanisms and strategies

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2025-02-01 DOI: 10.1016/j.porgcoat.2024.108956

Xiang Liu , Ping Lan , Ning Lin

Powder coatings are the fastest growing variety of coatings due to their high compliance with the standards of 5E. Particularly, epoxy powder coatings with bisphenol A diglycidyl ether (BADGE) as the resin matrix are widely used in building materials, ship pipelines, electronic devices and automotive furniture decoration materials, attributed to their excellent mechanical properties, corrosion resistance, electrical insulation and good appearance. The properties of the cured products of epoxy powder coatings are dominated by the curing systems. This review discusses the types, reaction principles, characteristics of curing agents and accelerators that participate in the curing reaction with different epoxy resins. Particularly, curing agents (amines, anhydrides, phenols, polyester resins, acrylic resin, polycarboxylic acid and its derivatives), curing accelerators (tertiary amines, imidazole and its derivatives, substituted urea, metal coordination compound and Lewis acid) and reaction mechanisms in curing systems based on BADGE for epoxy powder coatings are compared. Different from the previous reviews of powder coatings focusing on the formulation optimization and performance improvement, this review interprets curing reactions of epoxy powder coatings from the perspectives of chemical mechanism and selection strategy.

{"title":"Curing reactions of epoxy powder coatings in perspectives of chemical mechanisms and strategies","authors":"Xiang Liu , Ping Lan , Ning Lin","doi":"10.1016/j.porgcoat.2024.108956","DOIUrl":"10.1016/j.porgcoat.2024.108956","url":null,"abstract":"<div><div>Powder coatings are the fastest growing variety of coatings due to their high compliance with the standards of 5E. Particularly, epoxy powder coatings with bisphenol A diglycidyl ether (BADGE) as the resin matrix are widely used in building materials, ship pipelines, electronic devices and automotive furniture decoration materials, attributed to their excellent mechanical properties, corrosion resistance, electrical insulation and good appearance. The properties of the cured products of epoxy powder coatings are dominated by the curing systems. This review discusses the types, reaction principles, characteristics of curing agents and accelerators that participate in the curing reaction with different epoxy resins. Particularly, curing agents (amines, anhydrides, phenols, polyester resins, acrylic resin, polycarboxylic acid and its derivatives), curing accelerators (tertiary amines, imidazole and its derivatives, substituted urea, metal coordination compound and Lewis acid) and reaction mechanisms in curing systems based on BADGE for epoxy powder coatings are compared. Different from the previous reviews of powder coatings focusing on the formulation optimization and performance improvement, this review interprets curing reactions of epoxy powder coatings from the perspectives of chemical mechanism and selection strategy.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"199 ","pages":"Article 108956"},"PeriodicalIF":6.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143144754","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}

引用次数: 0

Construction of a self-floating fabric based on CVD-assisted coating and its application in interfacial evaporation

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2025-02-01 DOI: 10.1016/j.porgcoat.2024.108959

Jianbo Zhang , Zhijun Zhou , Bo Ge , Guina Ren , Tonghui Zhang , Zhaozhu Zhang

The discharge of industrial wastewater and the shortage of fresh water resources are increasingly endangering human daily life. In this experiment, bismuth oxychloride with oxygen vacancies was attached to a fabric surface using the solution deposition method, and then perfluoro-trichlorosilane was grafted on the surface to prepare a multifunctional superhydrophobic fabric. After mechanical stability testing, the fabric retained a water contact angle that consistently exceeded 150°, which could realize the selective adsorption of insoluble oil such as cyclohexane. Through a capture experiment of active species, the conclusion drawn was that holes (h⁺) and superoxide free radicals (·O₂⁻) were primary active species for the photocatalytic degradation process. After 4 cycles of photodegradation, the degradation efficiency could still reach 92.8 %, showing excellent cyclic degradation stability. An interfacial solar steam generator (ISSG) was assembled using the superhydrophobic fabric as the support layer and a polypyrrole sponge as the photothermal layer, whose evaporation efficiency under one sun reached 2.8376 kg·m⁻²·h⁻¹, with a photothermal conversion efficiency of 92.255 %. This ISSG demonstrates excellent wastewater purification capabilities. Interfacial evaporation devices show promising prospects in solar-powered wastewater purification, which further expand the use of interfacial evaporation to solve the problem of water scarcity.

{"title":"Construction of a self-floating fabric based on CVD-assisted coating and its application in interfacial evaporation","authors":"Jianbo Zhang , Zhijun Zhou , Bo Ge , Guina Ren , Tonghui Zhang , Zhaozhu Zhang","doi":"10.1016/j.porgcoat.2024.108959","DOIUrl":"10.1016/j.porgcoat.2024.108959","url":null,"abstract":"<div><div>The discharge of industrial wastewater and the shortage of fresh water resources are increasingly endangering human daily life. In this experiment, bismuth oxychloride with oxygen vacancies was attached to a fabric surface using the solution deposition method, and then perfluoro-trichlorosilane was grafted on the surface to prepare a multifunctional superhydrophobic fabric. After mechanical stability testing, the fabric retained a water contact angle that consistently exceeded 150°, which could realize the selective adsorption of insoluble oil such as cyclohexane. Through a capture experiment of active species, the conclusion drawn was that holes (h<sup>+</sup>) and superoxide free radicals (·O<sub>2</sub><sup>−</sup>) were primary active species for the photocatalytic degradation process. After 4 cycles of photodegradation, the degradation efficiency could still reach 92.8 %, showing excellent cyclic degradation stability. An interfacial solar steam generator (ISSG) was assembled using the superhydrophobic fabric as the support layer and a polypyrrole sponge as the photothermal layer, whose evaporation efficiency under one sun reached 2.8376 kg·m<sup>−2</sup>·h<sup>−1</sup>, with a photothermal conversion efficiency of 92.255 %. This ISSG demonstrates excellent wastewater purification capabilities. Interfacial evaporation devices show promising prospects in solar-powered wastewater purification, which further expand the use of interfacial evaporation to solve the problem of water scarcity.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"199 ","pages":"Article 108959"},"PeriodicalIF":6.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143144753","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}

引用次数: 0

Preparation and properties of core-shell self-matting waterborne polyurethane acrylate

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2025-01-23 DOI: 10.1016/j.porgcoat.2025.109081

Wenqiang Yang , Yushu Zhang , Shufang Wu , Ting Zhang , Zhiquan Li , Xiaoxuan Liu

In order to solve the problems of low density and high brittleness prevailing in traditional matte materials with added matting agents. Herein, a series of self-matting waterborne polyurethane acrylate emulsions (SMWPUA) with rough surfaces, low gloss, and core-shell structures were synthesized by varying the mass ratio of added acrylate monomers using a double-bond capped waterborne polyurethane (WPU) and a polyacrylate as the substrate using the core-shell emulsion polymerization method. Successful synthesis of resins containing core-shell structures demonstrated by Fourier infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy and scanning electron microscope (SEM). Tests such as atomicforce microscopy (AFM) showed that the synthesized emulsions were able to have a good matting effect, which was attributed to the increase in surface roughness and the increase in particle size. Emulsion particle size test was used to explore the variation of emulsion particle size. The thermal stability and hardness changes of SMWPUA and WPU were explored by TGA test and pencil hardness test. The results showed that with the increase of hard acrylate monomer content of SMWPUA, the surface gloss of the coating film was lower, the surface roughness of the cured film was larger, the glass transition temperature was increased, and the emulsion particle size was reduced. SMWPUA has better thermal stability and hardness than WPU.

{"title":"Preparation and properties of core-shell self-matting waterborne polyurethane acrylate","authors":"Wenqiang Yang , Yushu Zhang , Shufang Wu , Ting Zhang , Zhiquan Li , Xiaoxuan Liu","doi":"10.1016/j.porgcoat.2025.109081","DOIUrl":"10.1016/j.porgcoat.2025.109081","url":null,"abstract":"<div><div>In order to solve the problems of low density and high brittleness prevailing in traditional matte materials with added matting agents. Herein, a series of self-matting waterborne polyurethane acrylate emulsions (SMWPUA) with rough surfaces, low gloss, and core-shell structures were synthesized by varying the mass ratio of added acrylate monomers using a double-bond capped waterborne polyurethane (WPU) and a polyacrylate as the substrate using the core-shell emulsion polymerization method. Successful synthesis of resins containing core-shell structures demonstrated by Fourier infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy and scanning electron microscope (SEM). Tests such as atomicforce microscopy (AFM) showed that the synthesized emulsions were able to have a good matting effect, which was attributed to the increase in surface roughness and the increase in particle size. Emulsion particle size test was used to explore the variation of emulsion particle size. The thermal stability and hardness changes of SMWPUA and WPU were explored by TGA test and pencil hardness test. The results showed that with the increase of hard acrylate monomer content of SMWPUA, the surface gloss of the coating film was lower, the surface roughness of the cured film was larger, the glass transition temperature was increased, and the emulsion particle size was reduced. SMWPUA has better thermal stability and hardness than WPU.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"200 ","pages":"Article 109081"},"PeriodicalIF":6.5,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163203","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}

引用次数: 0

Hybrid polyetherimide-CuS layer coated nanoporous titanium implants: NIR-II laser-driven antibacterial strategy

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2025-01-23 DOI: 10.1016/j.porgcoat.2025.109063

Sivakumar Bose , Myungji Kang , Srinivasan Arthanari , Seonho Jung , Huseung Lee , Hyun Wook Kang

Although titanium-based artificial bioimplants are considered viable, they are not effective in combating bacterial-associated infections. In this perspective, the near-infrared (NIR) photothermal treatment (PTT) approach is suitable for eradicating bacteria due to its distinct characteristics. The present work aims to fabricate the NIR-II (1064 nm) laser-active CuS nanoparticles (NPs) incorporated within a polyetherimide (PEI) matrix as a hybrid coating on the nanoporous structured Ti surface (CuS-PEI/OH-Ti) to enhance the antibacterial efficacy. The formation of the CuS NPs, the alkali treatment of the Ti sample to create a nanoporous structure, and the subsequent coating of the hybrid CuS-PEI layer on OH-Ti were carried out by solvothermal and casting methods, respectively. The CuS NPs formed, nanoporous Ti surface, and the CuS-PEI hybrid coating on the OH-Ti surface with better adhesion were confirmed by comprehensive surface characterization studies. The antibacterial efficacy of CuS NPs (at 100 μg mL⁻¹) and their CuS-PEI coated OH-Ti was enhanced against S. aureus and E. coli under NIR-II laser irradiation, reaching over 88 % and 83 %, respectively through the cell membrane damage mechanism. Minimal cytotoxicity was observed in the presence of the L929 and MC3T3-E1 cell lines. Furthermore, the electrochemical results in a simulated body fluid revealed that the coated Ti is compatible with the in-vivo electrochemical potential range. The antibacterial efficacy (>97 % against S. aureus) of the CuS-PEI/OH-Ti implant, as well as its biocompatibility and stability, were confirmed using an in vivo subcutaneous mouse model. The results indicate that the application of a photoactive hybrid CuS-PEI layer on the nanoporous Ti improves the antibacterial properties without compromising the biocompatibility.

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引用次数: 0

The construction of nanosilica/PU composite coating for improvement of scratch resistance

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2025-01-22 DOI: 10.1016/j.porgcoat.2025.109083

Shengjie Yang, Zhengkang Peng, Aiping Zhu

Polyurethane (PU) varnish is widely used in car gloss coating, however, its scratch resistance still has great challenges due to the friction from particles like dust, sand, or hard materials. In this study, to obtain excellent scratch resistance property, the multiple fatty acids esterificated nanosilica (MA-SiO₂) has been innovatively selected to construct the nanosilica/PU composite coating. The results demonstrate that the monodispersity and good interfacial interaction are the key factors affecting the performance of the composite coating revealed by surface roughness, fracture surface morphology, friction coefficient, and elastic modulus measurements. The nanosilica/PU composite coating with MA-SiO₂ (3 ‰) filled presents best wear resistant and scratch resistance. The possible mechanism is the formation of unique nano-rough surface structure morphology and good interfacial adhesion.

引用次数: 0

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