Progress in Organic Coatings最新文献_第6页

Structural design and preparation of LED/moisture dual-cured polyurethane acrylate coatings with comprehensive properties

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.2025.109080

Yaofa Luo , Guang Liu , Pingfan Xu , Ao Ding , Peikun Zhang , Pengfei Zhang , Shuai Mao , Zeping Qiu , Zhenming Xie , Lihua Mei

LED curing technology makes up for some drawbacks of UV mercury lamps with its merits of no ozone emission and low energy consumption, and gradually replaces traditional UV mercury lamps in numerous fields. Nevertheless, a solitary LED curing coating struggles to fulfill the requirements in terms of curing depth, curing chroma, and comprehensive performance. Based on these, four types of polyurethane acrylate (PUA) coatings were fabricated through two-step synthesis and LED/moisture dual curing technology using cycloaliphatic isocyanate (IPDI), aliphatic isocyanate (HDI), monofunctional acrylate (HEMA), and trifunctional acrylate (PETA) as the primary raw materials. The dual curing system integrates the advantages of LED curing and moisture curing, and mitigates the shortcomings of incomplete curing and poor comprehensive performance of single LED. The experimental results show that these four dual-curing coatings show a certain degree of optimization in comprehensive properties such as curing properties, thermal properties, mechanical properties, and coating properties. In particular, the dual-curing coating prepared with HDI as the hard segment and PETA as the end-capping agent has a surface drying time of only 5 s. After dual curing, the gel content, water contact angle, tensile strength, shear strength, hardness, and adhesive force of the sample can respectively reach 97.8 %, 112.4°, 17.26 MPa, 3.7 MPa, 58.5 Shore D, and 5 B. Additionally, the coating also exhibited outstanding solvent resistance, with the absorption rates of 0.35 %, 8.42 %, 1.35 %, and 1.16 % respectively after 48 h immersion in water, ethanol, 10 wt% NaOH, and 10 wt% HCl solutions. It is also notable that the curing depth of the dual-cured coating can reach 8.96 mm, which is significantly higher than the 3.76 mm of the single light curing, and the colored curing is complete. Four kinds of coatings can be selected and customized in accordance with diverse application requirements, which is of great significance for the further development of environmental protection coatings and holds substantial practical value in industrial production.

{"title":"Structural design and preparation of LED/moisture dual-cured polyurethane acrylate coatings with comprehensive properties","authors":"Yaofa Luo , Guang Liu , Pingfan Xu , Ao Ding , Peikun Zhang , Pengfei Zhang , Shuai Mao , Zeping Qiu , Zhenming Xie , Lihua Mei","doi":"10.1016/j.porgcoat.2025.109080","DOIUrl":"10.1016/j.porgcoat.2025.109080","url":null,"abstract":"<div><div>LED curing technology makes up for some drawbacks of UV mercury lamps with its merits of no ozone emission and low energy consumption, and gradually replaces traditional UV mercury lamps in numerous fields. Nevertheless, a solitary LED curing coating struggles to fulfill the requirements in terms of curing depth, curing chroma, and comprehensive performance. Based on these, four types of polyurethane acrylate (PUA) coatings were fabricated through two-step synthesis and LED/moisture dual curing technology using cycloaliphatic isocyanate (IPDI), aliphatic isocyanate (HDI), monofunctional acrylate (HEMA), and trifunctional acrylate (PETA) as the primary raw materials. The dual curing system integrates the advantages of LED curing and moisture curing, and mitigates the shortcomings of incomplete curing and poor comprehensive performance of single LED. The experimental results show that these four dual-curing coatings show a certain degree of optimization in comprehensive properties such as curing properties, thermal properties, mechanical properties, and coating properties. In particular, the dual-curing coating prepared with HDI as the hard segment and PETA as the end-capping agent has a surface drying time of only 5 s. After dual curing, the gel content, water contact angle, tensile strength, shear strength, hardness, and adhesive force of the sample can respectively reach 97.8 %, 112.4°, 17.26 MPa, 3.7 MPa, 58.5 Shore D, and 5 B. Additionally, the coating also exhibited outstanding solvent resistance, with the absorption rates of 0.35 %, 8.42 %, 1.35 %, and 1.16 % respectively after 48 h immersion in water, ethanol, 10 wt% NaOH, and 10 wt% HCl solutions. It is also notable that the curing depth of the dual-cured coating can reach 8.96 mm, which is significantly higher than the 3.76 mm of the single light curing, and the colored curing is complete. Four kinds of coatings can be selected and customized in accordance with diverse application requirements, which is of great significance for the further development of environmental protection coatings and holds substantial practical value in industrial production.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"200 ","pages":"Article 109080"},"PeriodicalIF":6.5,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163898","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

CNC-reinforced regenerated cellulose coating: A novel approach to enhancing barrier and mechanical properties of cellulose-based packaging

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.2025.109082

Xinyun Du , Xue Zhang , Leilei Hou , Yun Cheng , Linghua Chen , Xuemei Chen , Meiwen Zhang , Lihuan Mo , Hongjie Zhang

The broader application of cellulose-based packaging has been restricted by its inherent limitations in mechanical and barrier properties, despite the advantages of biodegradability and renewability. In this study, a cellulose-based composite packaging material was developed through the incorporation of an ultra-thin layer of silane-modified regenerated cellulose coating, which was reinforced with cellulose nanocrystals (CNCs), onto a cellulose-based substrate. This incorporation was achieved utilizing the practical and efficient Mayer bar coating technique. The composites, incorporating an ultra-thin coating, weighing just 0.4 g/m², demonstrated notable enhancements in hydrophobicity, gas barrier properties, and mechanical characteristics compared to the untreated cellulose-based materials. The water contact angle of the composites reached up to 110.4°, indicating a significant shift towards hydrophobic surfaces. Furthermore, the water vapor transmission rate was reduced from 393.8 g/m²·d to 73.8 g/m²·d, while the oxygen permeability decreased by tens of times. Notably, the dry tensile index increased by 74.4 %, the wet tensile rose by a factor of 17.8, the burst index improved by 32.5 %, and the internal bond strength was enhanced by 94.3 %. The composites developed in this study demonstrate excellent barrier and mechanical properties, thereby expanding their potential applications in functional packaging.

{"title":"CNC-reinforced regenerated cellulose coating: A novel approach to enhancing barrier and mechanical properties of cellulose-based packaging","authors":"Xinyun Du , Xue Zhang , Leilei Hou , Yun Cheng , Linghua Chen , Xuemei Chen , Meiwen Zhang , Lihuan Mo , Hongjie Zhang","doi":"10.1016/j.porgcoat.2025.109082","DOIUrl":"10.1016/j.porgcoat.2025.109082","url":null,"abstract":"<div><div>The broader application of cellulose-based packaging has been restricted by its inherent limitations in mechanical and barrier properties, despite the advantages of biodegradability and renewability. In this study, a cellulose-based composite packaging material was developed through the incorporation of an ultra-thin layer of silane-modified regenerated cellulose coating, which was reinforced with cellulose nanocrystals (CNCs), onto a cellulose-based substrate. This incorporation was achieved utilizing the practical and efficient Mayer bar coating technique. The composites, incorporating an ultra-thin coating, weighing just 0.4 g/m<sup>2</sup>, demonstrated notable enhancements in hydrophobicity, gas barrier properties, and mechanical characteristics compared to the untreated cellulose-based materials. The water contact angle of the composites reached up to 110.4°, indicating a significant shift towards hydrophobic surfaces. Furthermore, the water vapor transmission rate was reduced from 393.8 g/m<sup>2</sup>·d to 73.8 g/m<sup>2</sup>·d, while the oxygen permeability decreased by tens of times. Notably, the dry tensile index increased by 74.4 %, the wet tensile rose by a factor of 17.8, the burst index improved by 32.5 %, and the internal bond strength was enhanced by 94.3 %. The composites developed in this study demonstrate excellent barrier and mechanical properties, thereby expanding their potential applications in functional packaging.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"200 ","pages":"Article 109082"},"PeriodicalIF":6.5,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163881","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

Conductive polymer–reduced graphene oxide-coupled ferric oxide composite coatings for electromagnetic wave shielding

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2025-01-21 DOI: 10.1016/j.porgcoat.2025.109078

Po-Tuan Chen , Yu-Chun Lu , Kuan-Syun Wang , Chi-Ming Liu , Tung-Yuan Yung , Ren-Jei Chung , Ting-Yu Liu

The popularization of communication technologies has unfortunately resulted in electromagnetic wave pollution. Composites containing materials with different functionalities can help more effectively shield against electromagnetic waves. In this study, we synthesized a composite containing magnetic Fe₃O₄ nanoparticles on in situ-reduced graphene oxide (GO) nanosheets. The formation of the rGO–Fe₃O₄ composite was confirmed using field emission-scanning electron microscopy and X-ray diffraction. rGO–Fe₃O₄ nanosheets were mixed with a conductive polymer, namely poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS), and coated and cured to produce a PEDOT:PSS/rGO–Fe₃O₄ film. The optimal shielding efficiency could reach −50 dB by appropriately setting the weight ratio and manufacturing parameters. With the total shielding effectiveness (SE_T) divided into reflection shielding effectiveness (SE_R) and absorption shielding effectiveness (SE_A), the produced thin film was found to be dominated by the absorption loss. The materials used in our composite are less environmentally polluting and have a simpler preparation process than conventional anti-electromagnetic products with metal particles. The composite has a 5G network band (3.5 GHz) and electromagnetic wave shielding capability. Our novel electromagnetic wave-resistant PEDOT:PSS/rGO–Fe₃O₄ film is a promising candidate for next-generation electromagnetic wave-resistant shield coatings.

{"title":"Conductive polymer–reduced graphene oxide-coupled ferric oxide composite coatings for electromagnetic wave shielding","authors":"Po-Tuan Chen , Yu-Chun Lu , Kuan-Syun Wang , Chi-Ming Liu , Tung-Yuan Yung , Ren-Jei Chung , Ting-Yu Liu","doi":"10.1016/j.porgcoat.2025.109078","DOIUrl":"10.1016/j.porgcoat.2025.109078","url":null,"abstract":"<div><div>The popularization of communication technologies has unfortunately resulted in electromagnetic wave pollution. Composites containing materials with different functionalities can help more effectively shield against electromagnetic waves. In this study, we synthesized a composite containing magnetic Fe<sub>3</sub>O<sub>4</sub> nanoparticles on in situ-reduced graphene oxide (GO) nanosheets. The formation of the rGO–Fe<sub>3</sub>O<sub>4</sub> composite was confirmed using field emission-scanning electron microscopy and X-ray diffraction. rGO–Fe<sub>3</sub>O<sub>4</sub> nanosheets were mixed with a conductive polymer, namely poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS), and coated and cured to produce a PEDOT:PSS/rGO–Fe<sub>3</sub>O<sub>4</sub> film. The optimal shielding efficiency could reach −50 dB by appropriately setting the weight ratio and manufacturing parameters. With the total shielding effectiveness (SE<sub>T</sub>) divided into reflection shielding effectiveness (SE<sub>R</sub>) and absorption shielding effectiveness (SE<sub>A</sub>), the produced thin film was found to be dominated by the absorption loss. The materials used in our composite are less environmentally polluting and have a simpler preparation process than conventional anti-electromagnetic products with metal particles. The composite has a 5G network band (3.5 GHz) and electromagnetic wave shielding capability. Our novel electromagnetic wave-resistant PEDOT:PSS/rGO–Fe<sub>3</sub>O<sub>4</sub> film is a promising candidate for next-generation electromagnetic wave-resistant shield coatings.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"200 ","pages":"Article 109078"},"PeriodicalIF":6.5,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163886","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

Hollow ceramic microbeads-SiO2/polydimethylsiloxane radiative cooling coating with self-cleaning effect and thermal insulation capability

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2025-01-21 DOI: 10.1016/j.porgcoat.2025.109075

Haibin Long , Fajun Wang , Yin Zhao , Junfei Ou , Wen Li , Alidad Amirfazli

Zero-energy radiative cooling (RC) coatings are important for reducing building energy consumption and minimizing carbon emissions. Future high-performance green buildings will require building envelope coatings with multiple functions, such as RC, self-cleaning, and thermal insulation. However, the existing RC coatings for buildings usually have only a single function or two of them. Hollow ceramic microbeads-SiO₂/polydimethylsiloxane (HCMs/PDMS) hybrid coatings were proposed to address the shortcomings of the RC coatings. The solar reflectance and infrared emissivity of the HCMs/PDMS coating were 92.4 % and 93.0 %, respectively. Under direct sunlight, the HCMs/PDMS coating achieved subambient RC effects of 11.1 °C and 4.81 °C in summer and winter, respectively. In addition, the HCMs/PDMS RC coating surface has a self-cleaning function (contact angle of 156° and a rolling angle of 7.2°), which improves the ability of the coating surface to prevent dust accumulation and thus improves the durability of the coating's RC performance. In particular, the HCMs/PDMS coating exhibits stronger adhesion to the building substrate than existing hollow glass microbeads (HGM) based coatings. Moreover, the HCMs/PDMS coating has an extremely low thermal conductivity (0.13 W·m⁻¹·K⁻¹), which blocks the diffusion of heat from the hot outdoors to the cool indoors in the summer and from the warm indoors to the cold outdoors in the winter and contributes to the reduction of a building's total year-round energy consumption by further restricting the heat exchanges between indoors and outdoors. The results of building energy simulations demonstrated that the use of HCMs/PDMS coatings in typical large cities around the world resulted in year-round building energy efficiency of more than 8 % in more than 66 % of the 18 typical cities. The multifunctional HCMs/PDMS RC coating developed in this work provides a new idea for the design of future high-performance green building coating materials.

{"title":"Hollow ceramic microbeads-SiO2/polydimethylsiloxane radiative cooling coating with self-cleaning effect and thermal insulation capability","authors":"Haibin Long , Fajun Wang , Yin Zhao , Junfei Ou , Wen Li , Alidad Amirfazli","doi":"10.1016/j.porgcoat.2025.109075","DOIUrl":"10.1016/j.porgcoat.2025.109075","url":null,"abstract":"<div><div>Zero-energy radiative cooling (RC) coatings are important for reducing building energy consumption and minimizing carbon emissions. Future high-performance green buildings will require building envelope coatings with multiple functions, such as RC, self-cleaning, and thermal insulation. However, the existing RC coatings for buildings usually have only a single function or two of them. Hollow ceramic microbeads-SiO<sub>2</sub>/polydimethylsiloxane (HCMs/PDMS) hybrid coatings were proposed to address the shortcomings of the RC coatings. The solar reflectance and infrared emissivity of the HCMs/PDMS coating were 92.4 % and 93.0 %, respectively. Under direct sunlight, the HCMs/PDMS coating achieved subambient RC effects of 11.1 °C and 4.81 °C in summer and winter, respectively. In addition, the HCMs/PDMS RC coating surface has a self-cleaning function (contact angle of 156° and a rolling angle of 7.2°), which improves the ability of the coating surface to prevent dust accumulation and thus improves the durability of the coating's RC performance. In particular, the HCMs/PDMS coating exhibits stronger adhesion to the building substrate than existing hollow glass microbeads (HGM) based coatings. Moreover, the HCMs/PDMS coating has an extremely low thermal conductivity (0.13 W·m<sup>−1</sup>·K<sup>−1</sup>), which blocks the diffusion of heat from the hot outdoors to the cool indoors in the summer and from the warm indoors to the cold outdoors in the winter and contributes to the reduction of a building's total year-round energy consumption by further restricting the heat exchanges between indoors and outdoors. The results of building energy simulations demonstrated that the use of HCMs/PDMS coatings in typical large cities around the world resulted in year-round building energy efficiency of more than 8 % in more than 66 % of the 18 typical cities. The multifunctional HCMs/PDMS RC coating developed in this work provides a new idea for the design of future high-performance green building coating materials.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"200 ","pages":"Article 109075"},"PeriodicalIF":6.5,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163887","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

Sustainable photothermal-responsive anti-corrosion nanocomposite coating with distinguished self-healing performance and ultrahigh mechanical properties

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2025-01-19 DOI: 10.1016/j.porgcoat.2025.109070

Tao Chen , Yushan Li , Wanyu Zhang , Fuchun Liu , En-Hou Han

Intelligent self-healing corrosion protection materials with photothermal-responsive performance have become a research hotspot with the gradual attention of people to the problem of corrosion of metal materials, while it is still challenging to impart simultaneously exceptional self-healing abilities and ultrahigh mechanical capabilities to materials. Herein, the dynamic bonds including hydrogen and oxime urethane bonds were introduced to the bio-based polyurethane (PU) by using photothermal-responsive chain extender 1,4-benzoquinone dioxime (QDO) and bio-based chain extender 2,5-tetrahydrofurandimethanol (THFDM), ecologically friendly halloysite nanotube modified by ferric ion and tannic acid (TA/Fe³⁺@HNT) was further incorporated to the PU polymer to form abundant interfacial hydrogen bonds. The nanocomposite material possesses strong tensile strength (64.4 MPa), distinguished toughness (785.5 MJ m⁻³), and efficient self-repairing properties (92.0 %, healing for 24 h at 35 °C). Moreover, the temperature of the material rises rapidly to 100.2 °C after irradiating for 90 s under near-infrared (NIR) light, which imparts shape memory properties and a more efficient self-healing performance (98.2 %, irradiating for 30 min) to the material. Meanwhile, the high coating's impedance modulus at 0.01 Hz (4.25 × 10⁸ Ω cm²) in 3.5 wt% NaCl solution with 45 days of soaking demonstrates its excellent long-lasting corrosive resistance. Hence, our work provides a straightforward and feasible method to fabricate high-performing photothermal-responsive self-healing PU nanocomposite that can be applied to long-term corrosion protection of metal materials.

{"title":"Sustainable photothermal-responsive anti-corrosion nanocomposite coating with distinguished self-healing performance and ultrahigh mechanical properties","authors":"Tao Chen , Yushan Li , Wanyu Zhang , Fuchun Liu , En-Hou Han","doi":"10.1016/j.porgcoat.2025.109070","DOIUrl":"10.1016/j.porgcoat.2025.109070","url":null,"abstract":"<div><div>Intelligent self-healing corrosion protection materials with photothermal-responsive performance have become a research hotspot with the gradual attention of people to the problem of corrosion of metal materials, while it is still challenging to impart simultaneously exceptional self-healing abilities and ultrahigh mechanical capabilities to materials. Herein, the dynamic bonds including hydrogen and oxime urethane bonds were introduced to the bio-based polyurethane (PU) by using photothermal-responsive chain extender 1,4-benzoquinone dioxime (QDO) and bio-based chain extender 2,5-tetrahydrofurandimethanol (THFDM), ecologically friendly halloysite nanotube modified by ferric ion and tannic acid (TA/Fe<sup>3+</sup>@HNT) was further incorporated to the PU polymer to form abundant interfacial hydrogen bonds. The nanocomposite material possesses strong tensile strength (64.4 MPa), distinguished toughness (785.5 MJ m<sup>−3</sup>), and efficient self-repairing properties (92.0 %, healing for 24 h at 35 °C). Moreover, the temperature of the material rises rapidly to 100.2 °C after irradiating for 90 s under near-infrared (NIR) light, which imparts shape memory properties and a more efficient self-healing performance (98.2 %, irradiating for 30 min) to the material. Meanwhile, the high coating's impedance modulus at 0.01 Hz (4.25 × 10<sup>8</sup> Ω cm<sup>2</sup>) in 3.5 wt% NaCl solution with 45 days of soaking demonstrates its excellent long-lasting corrosive resistance. Hence, our work provides a straightforward and feasible method to fabricate high-performing photothermal-responsive self-healing PU nanocomposite that can be applied to long-term corrosion protection of metal materials.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"200 ","pages":"Article 109070"},"PeriodicalIF":6.5,"publicationDate":"2025-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163884","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

Synergic effect of large MXene nanosheets and protective coatings on improved electroconductivity and wash durability of MXene/polymer-modified cotton fabric

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2025-01-19 DOI: 10.1016/j.porgcoat.2025.109062

Laura Jug , Silvo Hribernik , Alenka Ojstršek

E-textiles and their wearable analogues are finding applications in a myriad of sectors, ranging from sensors to health and sports applications. The development of a truly functional and reusable textile substrate presents a challenging task; its design encompasses the fabrication of optimal functional conductive particles, as well as devising strategies for their application that will ensure their functional properties (e.g. conductivity) are retained in an undiminished state for a foreseeable period. In the presented study, we tackled these two aspects in an interdependent way: i) The enhancement of the electrical conductivity of MXene-modified cotton fabric by increasing the lateral size of nanosheets during the Ti₃C₂T_X synthesis, and ii) The improvement of washing durability of MXenes on the fabric surface by selecting suitable protective coatings. The results of Scanning Electron Microscopy (SEM), X-ray powder Diffraction (XRD), Dynamic Light Scattering (DLS) and Atomic Force Microscopy (AFM) revealed the successful synthesis of large and stable MXene nanosheets with ultrathin flake-like nanostructures, high colloidal stability and delamination yields. Using multiple application procedures of dipping and drying, the MXene nanosheets formed extensive adhesion areas on the cotton fabric and overlapped the fibre pores, thus reducing the interfacial resistance between the sheets and improving the coating uniformity and, consequently, increasing electrical conductivity. Weaker adhesion and depletion of large nanosheets were further effectively prevented by protective polymer coatings. The MXene-coated/protected fabrics had sufficient electrical conductivity, even after 20 laundering cycles. Moreover, the surface hydrophobicity was negligibly reduced, preventing water accessibility and, thus, increasing the oxidation stability of the applied MXenes.

{"title":"Synergic effect of large MXene nanosheets and protective coatings on improved electroconductivity and wash durability of MXene/polymer-modified cotton fabric","authors":"Laura Jug , Silvo Hribernik , Alenka Ojstršek","doi":"10.1016/j.porgcoat.2025.109062","DOIUrl":"10.1016/j.porgcoat.2025.109062","url":null,"abstract":"<div><div>E-textiles and their wearable analogues are finding applications in a myriad of sectors, ranging from sensors to health and sports applications. The development of a truly functional and reusable textile substrate presents a challenging task; its design encompasses the fabrication of optimal functional conductive particles, as well as devising strategies for their application that will ensure their functional properties (e.g. conductivity) are retained in an undiminished state for a foreseeable period. In the presented study, we tackled these two aspects in an interdependent way: i) The enhancement of the electrical conductivity of MXene-modified cotton fabric by increasing the lateral size of nanosheets during the Ti<sub>3</sub>C<sub>2</sub>T<sub>X</sub> synthesis, and ii) The improvement of washing durability of MXenes on the fabric surface by selecting suitable protective coatings. The results of Scanning Electron Microscopy (SEM), X-ray powder Diffraction (XRD), Dynamic Light Scattering (DLS) and Atomic Force Microscopy (AFM) revealed the successful synthesis of large and stable MXene nanosheets with ultrathin flake-like nanostructures, high colloidal stability and delamination yields. Using multiple application procedures of dipping and drying, the MXene nanosheets formed extensive adhesion areas on the cotton fabric and overlapped the fibre pores, thus reducing the interfacial resistance between the sheets and improving the coating uniformity and, consequently, increasing electrical conductivity. Weaker adhesion and depletion of large nanosheets were further effectively prevented by protective polymer coatings. The MXene-coated/protected fabrics had sufficient electrical conductivity, even after 20 laundering cycles. Moreover, the surface hydrophobicity was negligibly reduced, preventing water accessibility and, thus, increasing the oxidation stability of the applied MXenes.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"200 ","pages":"Article 109062"},"PeriodicalIF":6.5,"publicationDate":"2025-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Facile fabrication of electrospun fluorescent graphene nanofiber layer in epoxy coating towards efficient corrosion degree evaluation

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2025-01-19 DOI: 10.1016/j.porgcoat.2025.109073

Peng Wang, Jingjing Zhang, Guangxu Zhao, Feng Hong, Hai Lin

Electrospun fluorescent graphene/polyacrylonitrile (R-AMG/PAN)(R-AMG was prepared by acid-modified graphene loaded with rare earth complexes.) and fluorescent graphite/chitosan/polyacrylonitrile (R-AMG/CS/PAN) membranes were incorporated into epoxy resin to develop a smart coating with fluorescence responsiveness to chloride ions (Cl⁻), and a comprehensive comparison of both coatings was conducted to assess their ability for corrosion protection and early corrosion monitoring during salt spray testing. Fluorescent graphene is a source for detecting the corrosion behavior of coatings. The use of electrostatic spinning technology significantly enhances the fluorescent properties of graphene. Additionally, the fiber structure enhances the barrier properties of the coating. The work provides a meaningful strategy for the design of intelligent protective materials.

引用次数: 0

Corrosion protection of epoxy-clay nanocomposite coatings on metallic substrates in saline environments containing alkaline copper quaternary ammonium wood preservatives

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2025-01-18 DOI: 10.1016/j.porgcoat.2025.109076

Yun-Xiang Lan , Chian-Huei Yang , I-Hsuan Hsiao , Chien-Wei Yeh , Naveen Bunekar , Jui-Ming Yeh , Karen S. Santiago , Cheng-Yu Tsai , Chun-Hung Huang

In this study, the epoxy-clay nanocomposites (ECNs) containing 0.5, 1.0, and 2.0 wt-% of organophilic modified clay (OMC) with CTAB as intercalating agent were prepared and applied in anticorrosion for metallic substrates in the forms of cold-rolled steel (CRS) electrode/steel panel/screw in saline condition containing 2 wt-% of alkaline copper quaternary (ACQ) ammonium.

The corrosion resistance of CRS coated with ECN was evaluated under saline conditions, both in the presence and absence of ACQ, through a series of electrochemical corrosion tests. E_corr of CRS-decorated with neat epoxy coating shifted from −611 to −624 mV in saline solution by introducing 2 wt-% of ACQ, implying that Cu²⁺ existing in saline solution with ACQ may speed up oxidation rate of iron. Moreover, E_corr of CRS electrode coated with ECN-0.5 containing 0.5 wt-% of OMC platelets shifted from −624 mV to −595 mV, indicating that clay platelets existing in ECN coating may effectively increase the diffusion pathway of Cu²⁺/oxygen gas as supported by the concentration of Cu²⁺ in ACQ determined by ICP-MS after electrochemical measurements and barrier property of oxygen gas was evaluated using a gas permeability analysis (GPA) technique, therefore slow down the oxidation rate of iron. Moreover, increasing the clay loading in ECN, the ECN-1 and ECN-2 exhibited the E_corr = −571 and − 552 mV, respectively, indicating that the higher loading of dispersing OMC in epoxy matrix may provide a much longer pathway length of Cu²⁺ and O₂ gas. Accelerated salt-spray corrosion of steel panel and screw in aggressive medium were also evaluated according to ASTM B-117. The results obtained from the salt-spray tests aligned well with those from the electrochemical evaluations. Adhesion and wear resistance of ECN coatings were also investigated by ASTM 3359 and ASTM D 4060, respectively.

{"title":"Corrosion protection of epoxy-clay nanocomposite coatings on metallic substrates in saline environments containing alkaline copper quaternary ammonium wood preservatives","authors":"Yun-Xiang Lan , Chian-Huei Yang , I-Hsuan Hsiao , Chien-Wei Yeh , Naveen Bunekar , Jui-Ming Yeh , Karen S. Santiago , Cheng-Yu Tsai , Chun-Hung Huang","doi":"10.1016/j.porgcoat.2025.109076","DOIUrl":"10.1016/j.porgcoat.2025.109076","url":null,"abstract":"<div><div>In this study, the epoxy-clay nanocomposites (ECNs) containing 0.5, 1.0, and 2.0 wt-% of organophilic modified clay (OMC) with CTAB as intercalating agent were prepared and applied in anticorrosion for metallic substrates in the forms of cold-rolled steel (CRS) electrode/steel panel/screw in saline condition containing 2 wt-% of alkaline copper quaternary (ACQ) ammonium.</div><div>The corrosion resistance of CRS coated with ECN was evaluated under saline conditions, both in the presence and absence of ACQ, through a series of electrochemical corrosion tests. <em>E</em><sub><em>corr</em></sub> of CRS-decorated with neat epoxy coating shifted from −611 to −624 mV in saline solution by introducing 2 wt-% of ACQ, implying that Cu<sup>2+</sup> existing in saline solution with ACQ may speed up oxidation rate of iron. Moreover, <em>E</em><sub><em>corr</em></sub> of CRS electrode coated with ECN-0.5 containing 0.5 wt-% of OMC platelets shifted from −624 mV to −595 mV, indicating that clay platelets existing in ECN coating may effectively increase the diffusion pathway of Cu<sup>2+</sup>/oxygen gas as supported by the concentration of Cu<sup>2+</sup> in ACQ determined by ICP-MS after electrochemical measurements and barrier property of oxygen gas was evaluated using a gas permeability analysis (GPA) technique, therefore slow down the oxidation rate of iron. Moreover, increasing the clay loading in ECN, the ECN-1 and ECN-2 exhibited the <em>E</em><sub><em>corr</em></sub> = −571 and − 552 mV, respectively, indicating that the higher loading of dispersing OMC in epoxy matrix may provide a much longer pathway length of Cu<sup>2+</sup> and O<sub>2</sub> gas. Accelerated salt-spray corrosion of steel panel and screw in aggressive medium were also evaluated according to ASTM B-117. The results obtained from the salt-spray tests aligned well with those from the electrochemical evaluations. Adhesion and wear resistance of ECN coatings were also investigated by ASTM 3359 and ASTM D 4060, respectively.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"200 ","pages":"Article 109076"},"PeriodicalIF":6.5,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163882","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

UV-catalytic fillers with hydrophilic groups encapsulating hydrophobic groups enhance the corrosion resistance of epoxy coatings in harsh environments

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2025-01-18 DOI: 10.1016/j.porgcoat.2025.109066

Chijia Wang , Shun Zhang , Siqiao Feng , Shuyi Liu , Haonan Liu , Qianqian Yin , Zihua Wang , Zhanjian Liu , Huaiyuan Wang

In recent years, the impact of filler surface groups on the protective qualities of epoxy resin coatings has garnered significant attention. This study has centered on the hydrophobic modification of mica fillers using fluorosilane (PFDTMS). Subsequently, the photocatalytic properties of titanium black (B-TiO₂) and Cobalt tetroxide (Co₃O₄) were utilized to deposit hydroxyl radicals onto the fluorosilane surface, resulting in a configuration where hydrophilic groups encapsulate hydrophobic groups on the exterior of the filler. Furthermore, the study aimed to evaluate the anti-corrosion and wear resistance of these composite coatings under high-pressure CO₂ conditions. After undergoing a 72-hour high-pressure CO₂ corrosion test, the EP/UV-F/B-TiO₂/Mica/Co₃O₄ composite coating retained a substantial impedance modulus value of 3.648 × 10⁹ Ω/cm² at 0.01 Hz, whereas the pure epoxy resin coating exhibited detachment and cracking from the substrate. These observations indicate that the epoxy composite coating, featuring its distinctive hydrophilic-hydrophobic configuration, possesses exceptional long-term corrosion resistance. In conclusion, this research presents encouraging prospects for the development of mica-based, resilient anti-corrosive fillers.

{"title":"UV-catalytic fillers with hydrophilic groups encapsulating hydrophobic groups enhance the corrosion resistance of epoxy coatings in harsh environments","authors":"Chijia Wang , Shun Zhang , Siqiao Feng , Shuyi Liu , Haonan Liu , Qianqian Yin , Zihua Wang , Zhanjian Liu , Huaiyuan Wang","doi":"10.1016/j.porgcoat.2025.109066","DOIUrl":"10.1016/j.porgcoat.2025.109066","url":null,"abstract":"<div><div>In recent years, the impact of filler surface groups on the protective qualities of epoxy resin coatings has garnered significant attention. This study has centered on the hydrophobic modification of mica fillers using fluorosilane (PFDTMS). Subsequently, the photocatalytic properties of titanium black (B-TiO<sub>2</sub>) and Cobalt tetroxide (Co<sub>3</sub>O<sub>4</sub>) were utilized to deposit hydroxyl radicals onto the fluorosilane surface, resulting in a configuration where hydrophilic groups encapsulate hydrophobic groups on the exterior of the filler. Furthermore, the study aimed to evaluate the anti-corrosion and wear resistance of these composite coatings under high-pressure CO<sub>2</sub> conditions. After undergoing a 72-hour high-pressure CO<sub>2</sub> corrosion test, the EP/UV-F/B-TiO<sub>2</sub>/Mica/Co<sub>3</sub>O<sub>4</sub> composite coating retained a substantial impedance modulus value of 3.648 × 10<sup>9</sup> Ω/cm<sup>2</sup> at 0.01 Hz, whereas the pure epoxy resin coating exhibited detachment and cracking from the substrate. These observations indicate that the epoxy composite coating, featuring its distinctive hydrophilic-hydrophobic configuration, possesses exceptional long-term corrosion resistance. In conclusion, this research presents encouraging prospects for the development of mica-based, resilient anti-corrosive fillers.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"200 ","pages":"Article 109066"},"PeriodicalIF":6.5,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163880","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

From solution to surfaces: Engineering a water-soluble 1, 2-benzisothiazolin-3-one (BIT)-based antimicrobial conjugate for an antibacterial and antifouling brush-like coating

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2025-01-18 DOI: 10.1016/j.porgcoat.2025.109077

Yihan Sun , Haibin Zhao , Yuanyuan Shen , Peng Wang

1, 2-benzisothiazolin-3-one (BIT) is a potent and broad-spectrum biocide, however, the limited water solubility severely restricted its antimicrobial efficacy and bioavailability. In this study, we developed a molecular splicing strategy via integrating two bioactive compounds BIT and poly [2-(dimethylamino) ethyl methacrylate] (PDMAEMA), thus yielding a BIT-PDMAEMA conjugate with distinctly improved water solubility and potent in vitro antibacterial activity. The conjugates do not require to further post-synthesis modification, showing intrinsic antimicrobial property, bactericidal activity, low drug resistance frequency, and biofilm inhibition and eradication effects. Mechanistic investigation demonstrated that the conjugates possess great cell membrane- and cellular-thiol-groups-targeting capability, thus disrupting cell membranes and cellular proteins, leading to significant oxidative stress damage and intracellular content leakage, eventually causing bacteria lysis. After bacterial activity screening, the optimal conjugate armed with antifouling and anchoring blocks was grafted onto arbitrary materials as a non-leaching bioactive compound against bacteria and prohibiting bacteria adhesion. We further used a two-chamber assay to valid the non-leaching feature and mechanistic mode of action of the brush-like surface coating. As a proof of concept, the contact-active coating shows a great potential for inactivating microorganisms in environmental water samples from untreated underground and surface water. The present work highlights the potential of the structural modification of BIT derivatives with the combination of activity enhancing modalities.

{"title":"From solution to surfaces: Engineering a water-soluble 1, 2-benzisothiazolin-3-one (BIT)-based antimicrobial conjugate for an antibacterial and antifouling brush-like coating","authors":"Yihan Sun , Haibin Zhao , Yuanyuan Shen , Peng Wang","doi":"10.1016/j.porgcoat.2025.109077","DOIUrl":"10.1016/j.porgcoat.2025.109077","url":null,"abstract":"<div><div>1, 2-benzisothiazolin-3-one (BIT) is a potent and broad-spectrum biocide, however, the limited water solubility severely restricted its antimicrobial efficacy and bioavailability. In this study, we developed a molecular splicing strategy via integrating two bioactive compounds BIT and poly [2-(dimethylamino) ethyl methacrylate] (PDMAEMA), thus yielding a BIT-PDMAEMA conjugate with distinctly improved water solubility and potent in vitro antibacterial activity. The conjugates do not require to further post-synthesis modification, showing intrinsic antimicrobial property, bactericidal activity, low drug resistance frequency, and biofilm inhibition and eradication effects. Mechanistic investigation demonstrated that the conjugates possess great cell membrane- and cellular-thiol-groups-targeting capability, thus disrupting cell membranes and cellular proteins, leading to significant oxidative stress damage and intracellular content leakage, eventually causing bacteria lysis. After bacterial activity screening, the optimal conjugate armed with antifouling and anchoring blocks was grafted onto arbitrary materials as a non-leaching bioactive compound against bacteria and prohibiting bacteria adhesion. We further used a two-chamber assay to valid the non-leaching feature and mechanistic mode of action of the brush-like surface coating. As a proof of concept, the contact-active coating shows a great potential for inactivating microorganisms in environmental water samples from untreated underground and surface water. The present work highlights the potential of the structural modification of BIT derivatives with the combination of activity enhancing modalities.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"200 ","pages":"Article 109077"},"PeriodicalIF":6.5,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163520","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