Progress in Organic Coatings最新文献_第10页

A smart fabric with reversibly switchable wettability for controllable oil/water separation

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2025-02-06 DOI: 10.1016/j.porgcoat.2025.109116

Zhiyong Wu, Zengdi Zhao, Yun Wu, Dan Zhang

{"title":"A smart fabric with reversibly switchable wettability for controllable oil/water separation","authors":"Zhiyong Wu, Zengdi Zhao, Yun Wu, Dan Zhang","doi":"10.1016/j.porgcoat.2025.109116","DOIUrl":"10.1016/j.porgcoat.2025.109116","url":null,"abstract":"<div><div>Developing pH-responsive superhydrophobic materials for on-demand separation of oil and water using simple and scalable methods continues to be a challenge. In this work, we report a pH-responsive polyurethane (pH-PU) synthesized by reacting aminopropyl-terminated polydimethylsiloxane (NH<sub>2</sub>-PDMS-NH<sub>2</sub>) with N-(3-aminopropyl)-N-dodecylpropane-1,3-diamine (Y12D). The pH-PU, combined with hydrophobic nano-silica, was thermally cured onto the textile surface to form a pH-responsive coating. The resulting coated fabric exhibits superhydrophobicity (159.4 ± 1.0°) and enables rapid wettability switching, driven by the pH-induced protonation and deprotonation of pH-PU. Notably, the coated fabric retains its superhydrophobicity and self-cleaning abilities even in challenging environments, such as mechanical damage, seawater exposure, UV irradiation, and organic solvent corrosion. More importantly, after plasma treatment renders the surface superhydrophilic, the coating can self-heal to a superhydrophobic state upon heating. Additionally, the fabric can switch between oil and water removal modes based on the type of oil-water mixture. The separation performance was evaluated using mixtures of oils and water with varying densities. Driven solely by gravity, the coated fabric demonstrated high separation efficiency and permeability. Even after five cycles, the separation efficiencies of light oil/water and heavy oil/water mixtures reached 97.8 ± 0.3 % and 97.4 ± 0.2 %, respectively, with fluxes of 11,572.90 ± 466.46 and 13,981.53 ± 1346.84 L·m<sup>−2</sup>·h<sup>−1</sup>. This work presents a fast and economical strategy for developing fluorine-free, self-healing, pH-responsive superhydrophobic coatings.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"201 ","pages":"Article 109116"},"PeriodicalIF":6.5,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143334127","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

Effects of accelerated weathering and hygrothermal ageing on the thermomechanical properties and residual stresses of epoxy amine coatings

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2025-02-06 DOI: 10.1016/j.porgcoat.2025.109126

Janice Xin Yee Ng , Nicholas Sheng Loong Tan , Vladimir Golovanevskiy , Hanan Farhat , Thunyaluk Pojtanabuntoeng

{"title":"Effects of accelerated weathering and hygrothermal ageing on the thermomechanical properties and residual stresses of epoxy amine coatings","authors":"Janice Xin Yee Ng , Nicholas Sheng Loong Tan , Vladimir Golovanevskiy , Hanan Farhat , Thunyaluk Pojtanabuntoeng","doi":"10.1016/j.porgcoat.2025.109126","DOIUrl":"10.1016/j.porgcoat.2025.109126","url":null,"abstract":"<div><div>The effect of artificial weathering and/or hygrothermal ageing on the thermomechanical properties of epoxy amine coating and the subsequent effect on the residual stresses (thermal and hygroscopic stresses) was investigated. Variations in the thermomechanical properties of coatings after artificial weathering and/or hygrothermal ageing, in comparison to fresh samples, were evaluated through various analyses. Feasibility of the determination of coefficient of hygroscopic expansion (<span><math><msub><msup><mi>α</mi><mi>H</mi></msup><mi>F</mi></msub></math></span>) from the slope of the plot of polynomial-fitted hygroscopic strain (ϵ<sub>hygro</sub>) and moisture concentration at saturation (C<sub>sat</sub>) was also assessed. Residual stresses of 229 MPa and 334 MPa were calculated based on experimentally determined properties. These stresses were found to exceed the compressive strength of the coatings, which explains the delamination observed in peel-off adhesion tests.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"201 ","pages":"Article 109126"},"PeriodicalIF":6.5,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143359297","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

A universal three-dimensional metal-organic frameworks assisted strategy facilitates non-covalent interaction of active/interfacial layers for over 19 % efficiency organic photovoltaics

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2025-02-06 DOI: 10.1016/j.porgcoat.2025.109111

Yufeng Jiang, Yuehao Li, Gaoyang Wang, Xiaomin Kang, Zhenye Li

{"title":"A universal three-dimensional metal-organic frameworks assisted strategy facilitates non-covalent interaction of active/interfacial layers for over 19 % efficiency organic photovoltaics","authors":"Yufeng Jiang, Yuehao Li, Gaoyang Wang, Xiaomin Kang, Zhenye Li","doi":"10.1016/j.porgcoat.2025.109111","DOIUrl":"10.1016/j.porgcoat.2025.109111","url":null,"abstract":"<div><div>The cathode interfacial layer (CIL) plays a crucial role in facilitating the efficient flow of electrons from the active layer to the metal electrode in organic photovoltaics (OPVs). In this work, we intelligently designed and synthesized a three-dimensional metal-organic frameworks (MOFs) material namely Ag-Zn-N/C, and firstly employ it as inorganic nanoparticle dopants for PFN-Br interlayer. The three-dimensional Ag-Zn-N/C possess tremendous surface area that can serve as the nucleation center, regulating the PFN-Br crystal, restraining Br ions induced dipole adsorption that facilitates electron transport, mitigating the excessive charge accumulation caused by the -CN functional group, and thus enhancing the electron extraction of PFN-Br interlayer and contributing to the formation of fast electron transfer network from ITIC to PFN-Br. As a consequence, the power conversion efficiency (PCE) of PBDB-T:ITIC-based OPVs boosted from 10.92 % to 12.63 %, delegating one of the supreme PCE values of this system. In addition, the Ag-Zn-N/C doping PFN-Br strategy was demonstrated to be general for different OPV systems. For example, upon the introduction of Ag-Zn-N/C, the PCE of the current mainstream systems PM6:L8-BO and D18:L8-BO has also been effectively enhanced from 16.21 % and 17.86 % to 17.55 % and 19.16 %, respectively. Our work can provide a simple and efficient approach for designing efficient CIL to boost the PCE of OPVs, which may further advance the commercialization of OPVs.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"201 ","pages":"Article 109111"},"PeriodicalIF":6.5,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143334129","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

Enhancement of thermal and mechanical properties of waterborne polyurethane-urea via chitin nanocrystal reinforcement

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2025-02-05 DOI: 10.1016/j.porgcoat.2025.109117

Andrea Ugarte , Oihane Echeverria-Altuna , Nagore Gabilondo , Ainara Saralegi , Raquel Rodriguez-Alonso , Arantxa Eceiza

{"title":"Enhancement of thermal and mechanical properties of waterborne polyurethane-urea via chitin nanocrystal reinforcement","authors":"Andrea Ugarte , Oihane Echeverria-Altuna , Nagore Gabilondo , Ainara Saralegi , Raquel Rodriguez-Alonso , Arantxa Eceiza","doi":"10.1016/j.porgcoat.2025.109117","DOIUrl":"10.1016/j.porgcoat.2025.109117","url":null,"abstract":"<div><div>Chitin nanocrystals (ChNC) have attracted significant interest as reinforcement due to their exceptional mechanical properties such as Young's modulus, surface functional groups that promote hydrogen-bonding interactions with specific matrices, and high length/diameter aspect ratio. Therefore, this study investigated the incorporation of chitin nanocrystals into a waterborne polyurethane urea dispersion (WBPUU) at concentrations ranging from 0.5 to 7 wt%. Nanocomposite films were prepared using an ultra-sonication assisted solvent casting method, and their properties were thoroughly analysed. The results demonstrate that the addition of ChNC significantly enhances thermomechanical stability, Young's modulus and stress at break, achieving the percolation threshold at a theoretical concentration of 3 wt% of ChNC. Notably, beyond the percolation threshold, these properties have increased significantly up to WBPUU7, with thermomechanical stability improving by more than 500 % and both Young's modulus and stress at break increasing by over 100 % when compared to values obtained at WBPUU. The study revealed that the addition of ChNC significantly influences water absorption, resulting in a fourfold increase in uptake in a basic medium. Furthermore, the abrasion resistance of the nanocomposites improves with ChNC content due to stable and interconnected network forms.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"201 ","pages":"Article 109117"},"PeriodicalIF":6.5,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143334128","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

Mechanically robust and self-healing protective coating for Zn-Al-Mg coated steel enhanced by benzotriazole-5 carboxylic acid intercalated MgAlCe ternary LDH

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2025-02-05 DOI: 10.1016/j.porgcoat.2025.109107

Mubashar Mahmood , Muhammad Mubeen , Wanling Wang , Mohammad Tabish , Hassan Murtaza , Muhammad Jawad , Jingbao Wang , Yiqian Lv , Jingmao Zhao , Baomin Fan

{"title":"Mechanically robust and self-healing protective coating for Zn-Al-Mg coated steel enhanced by benzotriazole-5 carboxylic acid intercalated MgAlCe ternary LDH","authors":"Mubashar Mahmood , Muhammad Mubeen , Wanling Wang , Mohammad Tabish , Hassan Murtaza , Muhammad Jawad , Jingbao Wang , Yiqian Lv , Jingmao Zhao , Baomin Fan","doi":"10.1016/j.porgcoat.2025.109107","DOIUrl":"10.1016/j.porgcoat.2025.109107","url":null,"abstract":"<div><div>Zn-Al-Mg coated steel (ZAM-steel) is increasingly utilized in automotive and construction industries due to favorable corrosion resistance compared to traditional galvanized steel. However, its application is limited by the susceptibility to filiform corrosion (FFC) in harsh environments. Herein, we developed a ternary MgAlCe layered double hydroxide (LDH) intercalated with benzotriazole-5 carboxylic acid (BTC) inhibitor using a one-pot hydrothermal approach. This LDH was incorporated into epoxy (EP) coating in order to inhibit FFC of ZAM-steel. The resulting EP-based nanocomposite coating (EP/MgAlCe BTC LDH) demonstrated remarkable long-term corrosion resistance, maintaining a lowest-frequency impedance (|<em>Z</em>|<sub>0.01Hz</sub>) of 2.19 × 10<sup>10</sup> Ω cm<sup>2</sup> even after 120 days of saline exposure. The |<em>Z</em>|<sub>0.01Hz</sub> value of scratched sample revealed a rising trend over 144 h, indicative of self-healing properties, further corroborated by salt spray test. Specifically, EP/MgAlCe-BTC coating offered superior protection against FFC. No FFC filament was observed after 8 weeks of exposure to a FFC-sensitive environment. The exceptional protective performance is attributed to the synergistic effect of inorganic inhibitor (cerium hydroxide) and BTC, establishing EP/MgAlCe-LDH/BTC coating as a highly effective solution for advanced protection of ZAM steel.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"201 ","pages":"Article 109107"},"PeriodicalIF":6.5,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099328","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

Facile construction of fluorine-free hydrophobic cotton fabrics by thiol-ene click reaction for oil-water separation

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2025-02-05 DOI: 10.1016/j.porgcoat.2025.109106

Xiaoguang Zhang , Zhe Cui , Mingzhen Mao , Tong Wang , Zegang Xu , Yu Fu , Tao Yang , Qin Wu , Bozhou Wang , Hansheng Li , Peizhou Li

{"title":"Facile construction of fluorine-free hydrophobic cotton fabrics by thiol-ene click reaction for oil-water separation","authors":"Xiaoguang Zhang , Zhe Cui , Mingzhen Mao , Tong Wang , Zegang Xu , Yu Fu , Tao Yang , Qin Wu , Bozhou Wang , Hansheng Li , Peizhou Li","doi":"10.1016/j.porgcoat.2025.109106","DOIUrl":"10.1016/j.porgcoat.2025.109106","url":null,"abstract":"<div><div>Fabrication of environmental-friendly hydrophobic materials is significantly important but challenging. Herein, utilizing the versatile thiol-ene click reaction, a pre-designed allyl-containing cyclophosphazene (CCPD) was facilely grafted onto the surfaces of organosilicone modified cotton fabrics (MPTES-CFs), and fluorine-free hydrophobic cotton fabrics (CCPD-MPTES-CFs) were fabricated. The structure analyses revealed the successful formation of the cyclophosphazene-based polymeric layer on the surface of cotton fabrics. The static contact angles (CAs) of CCPD-MPTES-CFs were measured, and the results indicated the superhydrophobicity of the clicked fluorine-free CCPD-MPTES-CFs with the CAs of up to 153.6°. CCPD-MPTES-CFs can maintain highly hydrophobic stability even without significant decrease in CAs after immersing in acid and base solutions for 21 days. Additionally, the clicked samples possess good self-cleaning property upon exposure to various liquids. The studies of CCPD-MPTES-CFs in oil-water separation demonstrated the excellent efficiency rate of 98.3 % for n-hexane and 98.2 % for toluene with separation fluxes being of 5720 and 5850 L/(m<sup>2</sup>⸱h), respectively. This study demonstrated that utilizing the versatile thiol-ene click reaction, fluorine-free hydrophobic cotton fabrics can be facially fabricated by grafting functionalized cyclophosphazene onto their surface.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"201 ","pages":"Article 109106"},"PeriodicalIF":6.5,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099327","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

Looking beneath the surface: Melanin-like nanoscaled polydopamine coating for “green” hair dyeing

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2025-02-05 DOI: 10.1016/j.porgcoat.2025.109112

Zixun Ning , Sihui Wang , Yuqing Cui , Hongchun Gu , Xinhe Li , Xun Feng , Yang Chen

{"title":"Looking beneath the surface: Melanin-like nanoscaled polydopamine coating for “green” hair dyeing","authors":"Zixun Ning , Sihui Wang , Yuqing Cui , Hongchun Gu , Xinhe Li , Xun Feng , Yang Chen","doi":"10.1016/j.porgcoat.2025.109112","DOIUrl":"10.1016/j.porgcoat.2025.109112","url":null,"abstract":"<div><div>Due to the unprecedented speed of the global population aging, there is a growing demand for hair dyeing. However, conventional chemical hair dyes are often not favored by individuals because of their harsh dyeing conditions and potential damage to humans and the environment. Recently, melanin-mimicking hair dyeing based on nanoscaled polydopamine (PDA) coating has received considerable attention from the scientific community. In this review, we presented a comprehensive summary of the use of PDA in the domain of hair dyeing. Its melanin-like structure and favorable properties for use as a potential hair dye are described in detail. The PDA dyeing systems based on chemical/enzymatic reactions were particularly highlighted, to provide practical guidance for the establishment or selection of the condition for PDA dyeing. In addition, the possible mechanisms behind the coating effect of PDA at the hair surface were fully discussed. Overall, this review provided an informative source for the development of PDA-based bio-inspired pigments as green alternatives for hair dyeing as well as other biological uses and would help the understanding of the interaction at the nano-bio interface.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"201 ","pages":"Article 109112"},"PeriodicalIF":6.5,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143334130","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 coatings on PVA electrospun nanofibers by electrochemical polymerization/deposition toward improved mechanical performance

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2025-02-05 DOI: 10.1016/j.porgcoat.2025.109105

Alejandra Pérez-Nava , Ismael Hernández-Acosta , J. Betzabe González-Campos , Bernardo A. Frontana-Uribe

{"title":"Conductive polymer coatings on PVA electrospun nanofibers by electrochemical polymerization/deposition toward improved mechanical performance","authors":"Alejandra Pérez-Nava , Ismael Hernández-Acosta , J. Betzabe González-Campos , Bernardo A. Frontana-Uribe","doi":"10.1016/j.porgcoat.2025.109105","DOIUrl":"10.1016/j.porgcoat.2025.109105","url":null,"abstract":"<div><div>In the present work, the post-electrospinning superficial functionalization of poly(vinyl alcohol) nanofibers (PVA-NF) with poly(3,4-ethylenedioxythiophene) (PEDOT) and polypyrrole (PPy) is addressed to produce PVA@PEDOT and PVA@PPy nanostructured composites. For this aim, the CPs coatings were electropolymerized and <em>in situ</em> electrodeposited from the corresponding monomers on the surface of PVA-NF collected on ITO electrodes, accomplishing the fibrous composites PVA@PEDOT and PVA@PPy. The assembly of CPs coatings on top of PVA-NF was characterized by FT-IR, FE-SEM and EDX elemental microanalysis, supporting the successful deposition of CP coatings. The electrochemical response of composites indicates that the redox properties of the CPs were preserved when deposited on the PVA-NF, and good capacitive behavior was displayed through 50 cycles of cyclic voltammetry. In addition, the PVA@CPs composites showed improved thermal resistance of at least 110 °C higher than the pristine PVA-NF. The evaluation of mechanical properties through stress-strain curves showed that incorporating PEDOT and PPy on the PVA improved Young's modulus to 95 MPa and 105 MPa, respectively, compared to pristine PVA-NF (61.4 MPa). Furthermore, the high water-solubility of the PVA-NF template leads to obtaining pure nanofibers of PPy and PEDOT at room temperature with preservation of microstructure at a high degree, being consistent with classical attributes associated with non-woven electrospun mats. This study demonstrates the feasibility of using PVA-NF as structural templates to guide the controlled deposition of CPs coatings during the electrochemical polymerization, outlining the crafting of well-organized nanofibrous environments of electro-responsive based on conducting polymers.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"201 ","pages":"Article 109105"},"PeriodicalIF":6.5,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143334126","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

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

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

{"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

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

{"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