A highly effective anticorrosion pigment, phytic acid-doped polyaniline adsorbed with aluminum ions (PANI-PA@Al), was developed to enhance barrier performance of waterborne epoxy coatings. PANI-PA@Al exhibits great monodispersity and can be homogeneously dispersed within waterborne epoxy coating matrix. With only 1 wt% PANI-PA@Al loading, the coating resistance of waterborne epoxy coating still maintains at 1.5 × 1010 Ω cm2 even after 166-day continuous exposure in corrosive medium, demonstrating an excellent anticorrosion property. In addition, waterborne epoxy coating with PANI-PA@Al also shows obvious self-healing performance, which stems from an interaction between the passivating behavior of PANI and the chelation provided by the aluminum phytate moieties. PANI-PA@Al holds great promise as a highly efficient anticorrosion pigment for providing long-term protection to waterborne epoxy coatings.
{"title":"Anticorrosion mechanism of waterborne epoxy coating containing polyaniline-adsorbed aluminum ions for carbon steel","authors":"Yongsheng Hao, Mingze Hu, Chunyu Li, Yongwei Shen, Sijia Liu, Hongwei Chang, Pengcheng Li, Qi Yun, Lixin Song","doi":"10.1016/j.porgcoat.2026.109988","DOIUrl":"10.1016/j.porgcoat.2026.109988","url":null,"abstract":"<div><div>A highly effective anticorrosion pigment, phytic acid-doped polyaniline adsorbed with aluminum ions (PANI-PA@Al), was developed to enhance barrier performance of waterborne epoxy coatings. PANI-PA@Al exhibits great monodispersity and can be homogeneously dispersed within waterborne epoxy coating matrix. With only 1 wt% PANI-PA@Al loading, the coating resistance of waterborne epoxy coating still maintains at 1.5 × 10<sup>10</sup> Ω cm<sup>2</sup> even after 166-day continuous exposure in corrosive medium, demonstrating an excellent anticorrosion property. In addition, waterborne epoxy coating with PANI-PA@Al also shows obvious self-healing performance, which stems from an interaction between the passivating behavior of PANI and the chelation provided by the aluminum phytate moieties. PANI-PA@Al holds great promise as a highly efficient anticorrosion pigment for providing long-term protection to waterborne epoxy coatings.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"213 ","pages":"Article 109988"},"PeriodicalIF":7.3,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146023690","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}
Pub Date : 2026-04-01Epub Date: 2025-12-29DOI: 10.1016/j.porgcoat.2025.109905
Yixing Zeng , Jinxin Yang , Yunyun Lu , Qi Cao , Hongqiang Li , Zhonghua Chen
As critical components of national energy infrastructure, crude oil storage tanks are prone to corrosion, and pose significant risks of ignition from static electricity. Herein, to enhance oil resistance and corrosion protection, fluorinated multiple amine was synthesized from ethyl heptafluorobutyrate and tetraethylenepentamine and then incorporated into polyurea coating. The hydrophobic and oleophobic characteristics of fluorocarbon chains and the enhanced crosslinking density contributed by multifunctional amines were both beneficial to improve the oil resistance and anticorrosion ability of polyurea coating. When the mass frction of fluorinated multiple amine reached 3 %, the polyurea coating exhibited exceptional corrosion resistance and oil resistance, achieving |Z|0.1Hz = 5.5 × 108 Ω·cm2 after immersion in 5 wt% NaCl solution for 30 d. After the exposure of the coating to neutral salt spray for 3000 h, there was only minimal corrosion on the substrate. In addition, the coating showed no blistering, and no obvious rust on the substrate after immersion in gasoline for 3000 h at 62 °C. Due to the incorporation of conductive mica powders, the surface resistivity of the polyurea coating reduced to below 1011 Ω, thereby fulfilling the requirements of electrostatic dissipation. The oil-resistant, corrosion-resistant and electrostatic-dissipating polyurea coating developed in this work exhibits considerable application potential in the field of crude oil storage facilities protection.
{"title":"Oil-resistant, anticorrosive and electrostatic-dissipating polyurea coating derived from fluorinated multiple amine","authors":"Yixing Zeng , Jinxin Yang , Yunyun Lu , Qi Cao , Hongqiang Li , Zhonghua Chen","doi":"10.1016/j.porgcoat.2025.109905","DOIUrl":"10.1016/j.porgcoat.2025.109905","url":null,"abstract":"<div><div>As critical components of national energy infrastructure, crude oil storage tanks are prone to corrosion, and pose significant risks of ignition from static electricity. Herein, to enhance oil resistance and corrosion protection, fluorinated multiple amine was synthesized from ethyl heptafluorobutyrate and tetraethylenepentamine and then incorporated into polyurea coating. The hydrophobic and oleophobic characteristics of fluorocarbon chains and the enhanced crosslinking density contributed by multifunctional amines were both beneficial to improve the oil resistance and anticorrosion ability of polyurea coating. When the mass frction of fluorinated multiple amine reached 3 %, the polyurea coating exhibited exceptional corrosion resistance and oil resistance, achieving |Z|<sub>0.1Hz</sub> = 5.5 × 10<sup>8</sup> Ω·cm<sup>2</sup> after immersion in 5 wt% NaCl solution for 30 d. After the exposure of the coating to neutral salt spray for 3000 h, there was only minimal corrosion on the substrate. In addition, the coating showed no blistering, and no obvious rust on the substrate after immersion in gasoline for 3000 h at 62 °C. Due to the incorporation of conductive mica powders, the surface resistivity of the polyurea coating reduced to below 10<sup>11</sup> Ω, thereby fulfilling the requirements of electrostatic dissipation. The oil-resistant, corrosion-resistant and electrostatic-dissipating polyurea coating developed in this work exhibits considerable application potential in the field of crude oil storage facilities protection.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"213 ","pages":"Article 109905"},"PeriodicalIF":7.3,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145885998","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}
Pub Date : 2026-04-01Epub Date: 2025-12-29DOI: 10.1016/j.porgcoat.2025.109903
Jose H. Ramirez-Suarez , Gavin L. Sacks , Julie M. Goddard
Aluminum cans offer a sustainable packaging alternative to address the global environmental burden of single-use plastics. However, development of high-performing coatings that prevent corrosion of the aluminum by beverage components is a growing challenge; especially with the phase out of epoxy resins containing bisphenol A. In this research, biomass-derived monomers were utilized in the synthesis and functionalization of an unsaturated polyester with phenolic moieties (catechol and gallol) via base-mediated thia-Michael addition. A coating formulation with a melamine-based crosslinker was prepared, spin coated on aluminum alloy 3000 series coupons and thermally cured. The performance of these coatings against corrosion during incubation in 3.5 % NaCl was evaluated under accelerated conditions. Aluminum coupons coated with catechol functionalized polymer prevented corrosion for the 14-day duration of the immersion study maintaining a pore resistance (Rp) above 108 Ω·cm2, in contrast to styrene and gallol containing coatings which Rp values dropped to 106 and showed evidence of corrosion and visible failure after 1 day of immersion. Enhancing the performance of commercially available aluminum can coatings comprised of biomass-derived monomers against corrosive beverage matrices is a step towards increasing sustainability in the coating and packaging industries.
{"title":"Catechol functionalized biopolyester coating with enhanced corrosion protection for aluminum cans","authors":"Jose H. Ramirez-Suarez , Gavin L. Sacks , Julie M. Goddard","doi":"10.1016/j.porgcoat.2025.109903","DOIUrl":"10.1016/j.porgcoat.2025.109903","url":null,"abstract":"<div><div>Aluminum cans offer a sustainable packaging alternative to address the global environmental burden of single-use plastics. However, development of high-performing coatings that prevent corrosion of the aluminum by beverage components is a growing challenge; especially with the phase out of epoxy resins containing bisphenol A. In this research, biomass-derived monomers were utilized in the synthesis and functionalization of an unsaturated polyester with phenolic moieties (catechol and gallol) <em>via</em> base-mediated thia-Michael addition. A coating formulation with a melamine-based crosslinker was prepared, spin coated on aluminum alloy 3000 series coupons and thermally cured. The performance of these coatings against corrosion during incubation in 3.5 % NaCl was evaluated under accelerated conditions. Aluminum coupons coated with catechol functionalized polymer prevented corrosion for the 14-day duration of the immersion study maintaining a pore resistance (R<sub>p</sub>) above 10<sup>8</sup> Ω·cm<sup>2</sup>, in contrast to styrene and gallol containing coatings which Rp values dropped to 10<sup>6</sup> and showed evidence of corrosion and visible failure after 1 day of immersion. Enhancing the performance of commercially available aluminum can coatings comprised of biomass-derived monomers against corrosive beverage matrices is a step towards increasing sustainability in the coating and packaging industries.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"213 ","pages":"Article 109903"},"PeriodicalIF":7.3,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145885997","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}
Pub Date : 2026-04-01Epub Date: 2025-12-30DOI: 10.1016/j.porgcoat.2025.109910
Ziyi Yang , Song Guo , Xiaoyan Pang , Yanan Wang
This study investigates the functionalization of mycelium fragments (MFs) through NaOH hydrolysis into hydrolyzed mycelium fragments (HMFs) for use as effective reinforcements in waterborne polyurethane (WPU) composites. MFs and HMFs were incorporated into a WPU matrix, synthesized via a two-step prepolymer method using isophorone diisocyanate (IPDI) and hexamethylene diisocyanate (HDI), at weight ratios from 0.1 % to 1.1 % during in-situ emulsification. Physicochemical analyses confirmed that NaOH treatment effectively modified MFs. This modification resulted in reduced particle size, increased surface roughness, and selective removal of proteins and soluble polysaccharides. Notably, a significant increase in surface amino groups occurred due to chitin deacetylation. Consequently, composite films incorporating HMFs exhibited markedly superior performance. Specifically, HMFs significantly improved tensile strength (reaching maximum 0.3 wt% HMFs), breaking elongation (peaking at 0.5 wt% HMFs), wear resistance, antibacterial efficacy against S. aureus, E. coli, and C. albicans, and flame retardancy. These property enhancements, including superior moisture management (water vapor transmission and absorption), were primarily attributed to the improved interfacial adhesion and compatibility between the functionalized HMFs and the WPU matrix, facilitated by stronger hydrogen bonding. This work demonstrates alkaline hydrolysis as an effective strategy to develop high-performance, multifunctional mycelium-based bio-fillers for WPU composites.
{"title":"Multifunctional mycelial fragments: Enhancing mechanical strength, water vapor transmission, flame retardancy, and antibacterial properties of waterborne polyurethane coatings","authors":"Ziyi Yang , Song Guo , Xiaoyan Pang , Yanan Wang","doi":"10.1016/j.porgcoat.2025.109910","DOIUrl":"10.1016/j.porgcoat.2025.109910","url":null,"abstract":"<div><div>This study investigates the functionalization of mycelium fragments (MFs) through NaOH hydrolysis into hydrolyzed mycelium fragments (HMFs) for use as effective reinforcements in waterborne polyurethane (WPU) composites. MFs and HMFs were incorporated into a WPU matrix, synthesized via a two-step prepolymer method using isophorone diisocyanate (IPDI) and hexamethylene diisocyanate (HDI), at weight ratios from 0.1 % to 1.1 % during in-situ emulsification. Physicochemical analyses confirmed that NaOH treatment effectively modified MFs. This modification resulted in reduced particle size, increased surface roughness, and selective removal of proteins and soluble polysaccharides. Notably, a significant increase in surface amino groups occurred due to chitin deacetylation. Consequently, composite films incorporating HMFs exhibited markedly superior performance. Specifically, HMFs significantly improved tensile strength (reaching maximum 0.3 wt% HMFs), breaking elongation (peaking at 0.5 wt% HMFs), wear resistance, antibacterial efficacy against <em>S. aureus</em>, <em>E. coli</em>, and <em>C. albicans</em>, and flame retardancy. These property enhancements, including superior moisture management (water vapor transmission and absorption), were primarily attributed to the improved interfacial adhesion and compatibility between the functionalized HMFs and the WPU matrix, facilitated by stronger hydrogen bonding. This work demonstrates alkaline hydrolysis as an effective strategy to develop high-performance, multifunctional mycelium-based bio-fillers for WPU composites.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"213 ","pages":"Article 109910"},"PeriodicalIF":7.3,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145885979","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}
Pub Date : 2026-04-01Epub Date: 2025-12-30DOI: 10.1016/j.porgcoat.2025.109922
Shenghua Xue , Shihan Wu , Shuo Yang , Shujuan Liu , Qian Ye , Feng Zhou
Biofouling at material interfaces undermines optical clarity, increases energy consumption, and accelerates device failure in marine, biomedical, and industrial contexts. Herein, we present the fabrication and antifouling performance of poly(vinylbenzyl–DABCO propane sulfonate) (PVBSB) zwitterionic polymer–functionalized coatings. A silica-sol underlayer was first deposited on glass, followed by the co-deposition of polydopamine (PDA) and polyethyleneimine (PEI) to form a robust precursor film enriched with anchoring sites for subsequent polymer grafting. Surface-initiated atom transfer radical polymerization (SI-ATRP), in a grafting-from approach, was then employed to directly grow PVBSB polymer brushes from the glass surface, yielding the Glass-PVBSB coating. The resulting surface demonstrated exceptional antifouling performance, with antibacterial rates exceeding 99 % against Escherichia coli and Staphylococcus aureus, and anti-adhesion removal efficiencies of 87.5 % and 96.9 % against Navicula and Dunaliella, respectively, while maintaining optical transmittance above 90 % across the visible spectrum.
{"title":"Fabrication of zwitterionic polymer brushes on transparent substrates via surface-initiated polymerization for antifouling applications","authors":"Shenghua Xue , Shihan Wu , Shuo Yang , Shujuan Liu , Qian Ye , Feng Zhou","doi":"10.1016/j.porgcoat.2025.109922","DOIUrl":"10.1016/j.porgcoat.2025.109922","url":null,"abstract":"<div><div>Biofouling at material interfaces undermines optical clarity, increases energy consumption, and accelerates device failure in marine, biomedical, and industrial contexts. Herein, we present the fabrication and antifouling performance of poly(vinylbenzyl–DABCO propane sulfonate) (PVBSB) zwitterionic polymer–functionalized coatings. A silica-sol underlayer was first deposited on glass, followed by the <em>co</em>-deposition of polydopamine (PDA) and polyethyleneimine (PEI) to form a robust precursor film enriched with anchoring sites for subsequent polymer grafting. Surface-initiated atom transfer radical polymerization (SI-ATRP), in a grafting-from approach, was then employed to directly grow PVBSB polymer brushes from the glass surface, yielding the Glass-PVBSB coating. The resulting surface demonstrated exceptional antifouling performance, with antibacterial rates exceeding 99 % against <em>Escherichia coli</em> and <em>Staphylococcus aureus</em>, and anti-adhesion removal efficiencies of 87.5 % and 96.9 % against <em>Navicula</em> and <em>Dunaliella</em>, respectively, while maintaining optical transmittance above 90 % across the visible spectrum.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"213 ","pages":"Article 109922"},"PeriodicalIF":7.3,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145886076","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}
Pub Date : 2026-04-01Epub Date: 2026-01-06DOI: 10.1016/j.porgcoat.2025.109901
Erlina Nurul Aini , Novitri Hastuti , Ni Putu Ratna Ayu Krishanti , Greitta Kusuma Dewi , Fitriani , Mutia Herni Ningrum , Farah Fahma , Luthfi Hakim , Wahyu Ramadhan , Muhamad Alif Razi , Heru Satrio Wibisono , Lulu Aprilia Damayanti , Vina Al Qibtiya
Ensuring the quality of traded commodities is essential for food safety and consumer suitability. Horticultural products are particularly vulnerable to microbial spoilage, presenting a considerable challenge for their shelf life in trade and distribution. Food coating technology has emerged as an effective approach to extend the preservation period of perishable products. This study presents the development of an antibacterial coating utilizing carboxymethyl cellulose (CMC) sourced from oil palm empty fruit bunches (OPEFB) in conjunction with ginger extract as an antibacterial agent. The results indicated that OPEFB CMC antimicrobial coating effectively preserved the freshness of tomatoes, as evidenced by critical characteristics such as total soluble solids (TSS), fruit firmness, and vitamin C concentration. The OPEFB-derived CMC in this study demonstrated lower values of degree of substitution, molecular weight, and viscosity compared to commercial CMC. However, when formulated as a coating, it exhibited comparable or even enhanced efficacy in preserving tomatoes, especially with the incorporation of ginger extract into the OPEFB-based coating. Tomatoes coated with OPEFB-CMC containing 5 % ginger extract exhibited outstanding quality, with a vitamin C concentration of 25 ppm, total soluble solids (TSS) of 6.2°Brix, and fruit firmness of 550 N after 21 days of storage, representing the highest values among all coating formulations. The findings indicate that CMC derived from OPEFB may serve as a viable material for food coating applications.
{"title":"Development of antibacterial food-coating by employing carboxymethyl cellulose from oil palm empty fruit bunches embedded with ginger extract","authors":"Erlina Nurul Aini , Novitri Hastuti , Ni Putu Ratna Ayu Krishanti , Greitta Kusuma Dewi , Fitriani , Mutia Herni Ningrum , Farah Fahma , Luthfi Hakim , Wahyu Ramadhan , Muhamad Alif Razi , Heru Satrio Wibisono , Lulu Aprilia Damayanti , Vina Al Qibtiya","doi":"10.1016/j.porgcoat.2025.109901","DOIUrl":"10.1016/j.porgcoat.2025.109901","url":null,"abstract":"<div><div>Ensuring the quality of traded commodities is essential for food safety and consumer suitability. Horticultural products are particularly vulnerable to microbial spoilage, presenting a considerable challenge for their shelf life in trade and distribution. Food coating technology has emerged as an effective approach to extend the preservation period of perishable products. This study presents the development of an antibacterial coating utilizing carboxymethyl cellulose (CMC) sourced from oil palm empty fruit bunches (OPEFB) in conjunction with ginger extract as an antibacterial agent. The results indicated that OPEFB CMC antimicrobial coating effectively preserved the freshness of tomatoes, as evidenced by critical characteristics such as total soluble solids (TSS), fruit firmness, and vitamin C concentration. The OPEFB-derived CMC in this study demonstrated lower values of degree of substitution, molecular weight, and viscosity compared to commercial CMC. However, when formulated as a coating, it exhibited comparable or even enhanced efficacy in preserving tomatoes, especially with the incorporation of ginger extract into the OPEFB-based coating. Tomatoes coated with OPEFB-CMC containing 5 % ginger extract exhibited outstanding quality, with a vitamin C concentration of 25 ppm, total soluble solids (TSS) of 6.2°Brix, and fruit firmness of 550 N after 21 days of storage, representing the highest values among all coating formulations. The findings indicate that CMC derived from OPEFB may serve as a viable material for food coating applications.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"213 ","pages":"Article 109901"},"PeriodicalIF":7.3,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145927794","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}
Epoxy resin (EP) coating is widely used in the construction field due to its excellent performance. Microcapsules are prepared by self-assembly of TiO2 on the surface of azodicarbonamide (ADC) to enhance the flame-retardancy and smoke suppression of epoxy resin, and to address the ultraviolet failure of azodicarbonamide in practical applications. By adding 5 wt% of azodicarbonamide microcapsules to the epoxy resin, the limiting oxygen index (LOI) of the composite EP was increased from 20 % to 31 % compared with the pure EP, reaching the level of flame-retardant material. Through cone calorimeter test (CCT), the total heat release (THR), peak heat release rate (pHRR) and total smoke production (TSP) of composite EP were reduced by 62.09 %, 54.88 % and 46.98 %, respectively, and the epoxy resin was equipped with a very good charring effect, which improved the flame retardancy. In addition, SEM images showed that the ADC was successfully coated by TiO2, which avoided the ADC from being exposed to UV leading to failure and enhanced its effectiveness in practical applications.
{"title":"Preparation of light-resistant and flame-retardant microcapsule and its application to enhance the flame retardancy of epoxy resin","authors":"Zhengang Gao, Yuxin Zhang, Yutong Yang, Jiayi Han, Jiaji Cheng, Yapeng Wang, Shaoxiang Li","doi":"10.1016/j.porgcoat.2025.109935","DOIUrl":"10.1016/j.porgcoat.2025.109935","url":null,"abstract":"<div><div>Epoxy resin (EP) coating is widely used in the construction field due to its excellent performance. Microcapsules are prepared by self-assembly of TiO<sub>2</sub> on the surface of azodicarbonamide (ADC) to enhance the flame-retardancy and smoke suppression of epoxy resin, and to address the ultraviolet failure of azodicarbonamide in practical applications. By adding 5 wt% of azodicarbonamide microcapsules to the epoxy resin, the limiting oxygen index (LOI) of the composite EP was increased from 20 % to 31 % compared with the pure EP, reaching the level of flame-retardant material. Through cone calorimeter test (CCT), the total heat release (THR), peak heat release rate (pHRR) and total smoke production (TSP) of composite EP were reduced by 62.09 %, 54.88 % and 46.98 %, respectively, and the epoxy resin was equipped with a very good charring effect, which improved the flame retardancy. In addition, SEM images showed that the ADC was successfully coated by TiO<sub>2</sub>, which avoided the ADC from being exposed to UV leading to failure and enhanced its effectiveness in practical applications.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"213 ","pages":"Article 109935"},"PeriodicalIF":7.3,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145885996","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}
Pub Date : 2026-04-01Epub Date: 2026-01-19DOI: 10.1016/j.porgcoat.2026.109977
Qingmei Guo , Yuying Zheng , Jie Zhang
The gradual permeation of corrosive media and external mechanical damage are the key factors leading to the rapid deterioration of organic coatings' anti-corrosion performance. In this study, a cerium ion-phosphate-2-methylimidazole hybrid metal-organic framework (Ce-P-Im-MOF) was constructed on the surface of polydopamine-coated Ti3C2Tx nanosheets (Ti3C2Tx@PDA) through an in situ growth and ligand exchange strategy, and it (labelled as Ti3C2Tx@PDA-Ce-P-Im-MOF, TPCP) was added into the polyvinyl butyral coating (PVB). The composite coating significantly enhances the long-lasting barrier performance and confers efficient and intelligent corrosion inhibition. Systematic characterisation (FT-IR, XRD, XPS, SEM, TEM, etc.) confirmed the successful synthesis of TPCP. Corrosion inhibition performance evaluation indicates that TPCP exhibits pronounced pH-responsive release characteristics for both cerium ions and phosphate ions, thereby preventing unnecessary leakage. Within 72 h, it achieved a corrosion inhibition efficiency of up to 84.26% on copper substrates. Electrochemical impedance spectroscopy (EIS) results showed that the log|Z|0.01Hz of the intact coating was still 9.55 Ω·cm2 after 100 d of immersion in 3.5 wt% NaCl solution, demonstrating excellent long-lasting barrier performance. When the coating is damaged, the log|Z|0.01Hz of the composite coating quickly recovers to 6.09 Ω·cm2 within 72 h, and the salt spray test further confirms that the scratched coating is still able to effectively protect the copper substrate for up to 14 d. The excellent long-lasting barrier and high corrosion inhibition performance are attributed to the synergistic effect of physical barrier/conductivity modulation of Ti3C2Tx@PDA and pH-responsive dynamic corrosion inhibition of Ce-P-Im-MOF in TPCP. This study provides an innovative strategy for the development of advanced anticorrosion coatings with both long-lasting barrier and intelligent corrosion inhibition functions.
{"title":"Ce-based hybrid MOF-modified polydopamine-coated Ti3C2Tx nanosheets for constructing long-lasting barrier and intelligent corrosion-inhibiting polyvinyl butyral anti-corrosion coatings","authors":"Qingmei Guo , Yuying Zheng , Jie Zhang","doi":"10.1016/j.porgcoat.2026.109977","DOIUrl":"10.1016/j.porgcoat.2026.109977","url":null,"abstract":"<div><div>The gradual permeation of corrosive media and external mechanical damage are the key factors leading to the rapid deterioration of organic coatings' anti-corrosion performance. In this study, a cerium ion-phosphate-2-methylimidazole hybrid metal-organic framework (Ce-P-Im-MOF) was constructed on the surface of polydopamine-coated Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> nanosheets (Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>@PDA) through an in situ growth and ligand exchange strategy, and it (labelled as Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>@PDA-Ce-P-Im-MOF, TPCP) was added into the polyvinyl butyral coating (PVB). The composite coating significantly enhances the long-lasting barrier performance and confers efficient and intelligent corrosion inhibition. Systematic characterisation (FT-IR, XRD, XPS, SEM, TEM, etc.) confirmed the successful synthesis of TPCP. Corrosion inhibition performance evaluation indicates that TPCP exhibits pronounced pH-responsive release characteristics for both cerium ions and phosphate ions, thereby preventing unnecessary leakage. Within 72 h, it achieved a corrosion inhibition efficiency of up to 84.26% on copper substrates. Electrochemical impedance spectroscopy (EIS) results showed that the log|Z|<sub>0.01Hz</sub> of the intact coating was still 9.55 Ω·cm<sup>2</sup> after 100 d of immersion in 3.5 wt% NaCl solution, demonstrating excellent long-lasting barrier performance. When the coating is damaged, the log|Z|<sub>0.01Hz</sub> of the composite coating quickly recovers to 6.09 Ω·cm<sup>2</sup> within 72 h, and the salt spray test further confirms that the scratched coating is still able to effectively protect the copper substrate for up to 14 d. The excellent long-lasting barrier and high corrosion inhibition performance are attributed to the synergistic effect of physical barrier/conductivity modulation of Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>@PDA and pH-responsive dynamic corrosion inhibition of Ce-P-Im-MOF in TPCP. This study provides an innovative strategy for the development of advanced anticorrosion coatings with both long-lasting barrier and intelligent corrosion inhibition functions.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"213 ","pages":"Article 109977"},"PeriodicalIF":7.3,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146023677","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}
Pub Date : 2026-04-01Epub Date: 2026-01-20DOI: 10.1016/j.porgcoat.2026.109969
Gengbiao Chen , Kexian Huang , Jiaxing Lu , Jie Su , Xingbao Huang , Yuqi Ouyang , Jinlai Zhang , Weiwei Ming
Inspired by the multilevel micro/nano structures and intrinsic superhydrophobicity of snake scales, this study innovatively develops a biomimetic superhydrophobic coating with hierarchical millimeter-micrometer-nanometer structures through the integration of projection micro-stereolithography 3D printing and spray coating. 3D printing enables precise construction of millimeter contours and micrometer-scale protrusions, while spray coating introduces titanate-modified TiO₂ nanoparticles into an Epoxy/PDMS matrix to engineer nanoscale roughness, achieving synergistic multi-scale structural design. The 75° inclined micro-protrusion coating exhibits optimal superhydrophobicity with a water contact angle of 160.8° ± 2.5° and sliding angle <10° in the positive direction, sliding angle >25° in the negative direction featuring distinct anisotropic droplet manipulation. Droplet bouncing dynamics are regulable, with 45° maximizing horizontal displacement (2.87 mm) and 60° enhancing vertical rebound (3.85 mm). Numerical simulations validate that hierarchical structures stabilize air pockets and induce asymmetric pressure gradients, unraveling the mechanism of directional droplet behavior and drag reduction. The coating maintains robust performance, retaining a water contact angle >150° after 50 abrasion cycles and achieving 66.6% drag reduction at 200 s−1. This work breaks through the limitations of traditional fabrication in multi-scale structural integration and functional regulation, establishing a novel strategy for customizable superhydrophobic surfaces via 3D printing-driven cross-scale engineering. It not only advances the fundamental understanding of structure-function relationships in biomimetic surfaces but also provides a promising pathway for enhancing efficiency in heat and mass transfer systems, microfluidic control, and energy-efficient fluid transport.
{"title":"PμSL 3D printing-constructed biomimetic hierarchical structures: For droplet manipulation and drag reduction","authors":"Gengbiao Chen , Kexian Huang , Jiaxing Lu , Jie Su , Xingbao Huang , Yuqi Ouyang , Jinlai Zhang , Weiwei Ming","doi":"10.1016/j.porgcoat.2026.109969","DOIUrl":"10.1016/j.porgcoat.2026.109969","url":null,"abstract":"<div><div>Inspired by the multilevel micro/nano structures and intrinsic superhydrophobicity of snake scales, this study innovatively develops a biomimetic superhydrophobic coating with hierarchical millimeter-micrometer-nanometer structures through the integration of projection micro-stereolithography 3D printing and spray coating. 3D printing enables precise construction of millimeter contours and micrometer-scale protrusions, while spray coating introduces titanate-modified TiO₂ nanoparticles into an Epoxy/PDMS matrix to engineer nanoscale roughness, achieving synergistic multi-scale structural design. The 75° inclined micro-protrusion coating exhibits optimal superhydrophobicity with a water contact angle of 160.8° ± 2.5° and sliding angle <10° in the positive direction, sliding angle >25° in the negative direction featuring distinct anisotropic droplet manipulation. Droplet bouncing dynamics are regulable, with 45° maximizing horizontal displacement (2.87 mm) and 60° enhancing vertical rebound (3.85 mm). Numerical simulations validate that hierarchical structures stabilize air pockets and induce asymmetric pressure gradients, unraveling the mechanism of directional droplet behavior and drag reduction. The coating maintains robust performance, retaining a water contact angle >150° after 50 abrasion cycles and achieving 66.6% drag reduction at 200 s<sup>−1</sup>. This work breaks through the limitations of traditional fabrication in multi-scale structural integration and functional regulation, establishing a novel strategy for customizable superhydrophobic surfaces via 3D printing-driven cross-scale engineering. It not only advances the fundamental understanding of structure-function relationships in biomimetic surfaces but also provides a promising pathway for enhancing efficiency in heat and mass transfer systems, microfluidic control, and energy-efficient fluid transport.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"213 ","pages":"Article 109969"},"PeriodicalIF":7.3,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146023679","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}
Pub Date : 2026-04-01Epub Date: 2026-01-21DOI: 10.1016/j.porgcoat.2026.109981
Dongdong Wang , Jiapeng Li , Jing Jin , Yanxiong Pan , Xiangling Ji , Wei Jiang
Pressure-sensitive adhesives (PSAs) are widely used in various fields, including packaging, medical, agriculture, and renewable energy. The synthesis of PSAs with both biodegradable and high-performance features is a topic of ongoing interest in academia and industry. In this study, a series of biodegradable poly(propylene carbonate)-polyol-(2-amino-4-hydroxy-6-methylpyrimidine)s (PPC-PEG-AHMPs) containing ureidopyrimidinone (UPy) motifs were successfully synthesized using isophorone diisocyanate (IPDI) to react with the oligomer of the hydroxyl groups terminated poly(propylene carbonate), polyethylene glycol (PEG), and 2-amino-4-hydroxy-6-methylpyrimidine (AHMP) in a single-vessel, stepwise chemical reaction. The suitable molecular weight of PPC-PEG-AHMPs, and the existence of quadruple hydrogen bonding motifs of UPy groups and other polar groups, bestow the PPC-PEG-AHMPs with tunable peeling strengths ranging from 0.3 to 12.7 N/cm. The as-prepared PPC-PEG-AHMPs also exhibit considerable biodegradation performance. These features demonstrate that PPC-PEG-AHMPs would be desirable candidates for high-performance and biodegradable PSAs in the future.
{"title":"Poly(propylene carbonate)-based pressure sensitive adhesives with tunable adhesive properties and biodegradable performance","authors":"Dongdong Wang , Jiapeng Li , Jing Jin , Yanxiong Pan , Xiangling Ji , Wei Jiang","doi":"10.1016/j.porgcoat.2026.109981","DOIUrl":"10.1016/j.porgcoat.2026.109981","url":null,"abstract":"<div><div>Pressure-sensitive adhesives (PSAs) are widely used in various fields, including packaging, medical, agriculture, and renewable energy. The synthesis of PSAs with both biodegradable and high-performance features is a topic of ongoing interest in academia and industry. In this study, a series of biodegradable poly(propylene carbonate)-polyol-(2-amino-4-hydroxy-6-methylpyrimidine)s (PPC-PEG-AHMPs) containing ureidopyrimidinone (UPy) motifs were successfully synthesized using isophorone diisocyanate (IPDI) to react with the oligomer of the hydroxyl groups terminated poly(propylene carbonate), polyethylene glycol (PEG), and 2-amino-4-hydroxy-6-methylpyrimidine (AHMP) in a single-vessel, stepwise chemical reaction. The suitable molecular weight of PPC-PEG-AHMPs, and the existence of quadruple hydrogen bonding motifs of UPy groups and other polar groups, bestow the PPC-PEG-AHMPs with tunable peeling strengths ranging from 0.3 to 12.7 N/cm. The as-prepared PPC-PEG-AHMPs also exhibit considerable biodegradation performance. These features demonstrate that PPC-PEG-AHMPs would be desirable candidates for high-performance and biodegradable PSAs in the future.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"213 ","pages":"Article 109981"},"PeriodicalIF":7.3,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146023681","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}
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