Journal of Applied Polymer Science最新文献

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Correction to “Poly-p-Phenylene Terephthamide Modified Poly(1,3,4-Oxadiazole) Fibers With Superior Ultraviolet Resistance” 对“聚对苯基对苯二甲酰胺改性聚(1,3,4-恶二唑)抗紫外线纤维”的修正
IF 2.7 3区 化学
Journal of Applied Polymer Science Pub Date : 2025-04-01 DOI: 10.1002/app.57054
{"title":"Correction to “Poly-p-Phenylene Terephthamide Modified Poly(1,3,4-Oxadiazole) Fibers With Superior Ultraviolet Resistance”","authors":"","doi":"10.1002/app.57054","DOIUrl":"https://doi.org/10.1002/app.57054","url":null,"abstract":"<p>W. Feng, J. Zhu, C. Yang, et al., “Poly-<i>p</i>-Phenylene Terephthamide Modified Poly(1,3,4-Oxadiazole) Fibers With Superior Ultraviolet Resistance,” <i>Journal of Applied Polymer Science</i> 140, no. 39 (2023): e54455, https://doi.org/10.1002/app.54455.</p><p>In the above-mentioned article, the affiliation of the second author is partially incorrect. The correct affiliation is just “Smart Devices, Brewer Science Inc., Springfield, MO 65806, USA”. Please remove the affiliation of “Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 USA”.</p><p>We apologize for this error.</p>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 21","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/app.57054","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143856759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cover Image, Volume 142, Issue 18 封面图片,第142卷,第18期
IF 2.7 3区 化学
Journal of Applied Polymer Science Pub Date : 2025-04-01 DOI: 10.1002/app.54197
Kowsar Rezvanian, Radhika Panickar, Faruk Soso, Vijaya Rangari
{"title":"Cover Image, Volume 142, Issue 18","authors":"Kowsar Rezvanian,&nbsp;Radhika Panickar,&nbsp;Faruk Soso,&nbsp;Vijaya Rangari","doi":"10.1002/app.54197","DOIUrl":"https://doi.org/10.1002/app.54197","url":null,"abstract":"<p>The cover image is based on the article <i>Mathematical Modeling and Optimization of Poly(Ethylene Vinyl Alcohol) Film Thickness and Ethylene Composition Based on I-Optimal Design</i> by Kowsar Rezvanian et al., https://doi.org/10.1002/app.56827.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 18","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/app.54197","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143741368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Carboxylated Carbon Nanotubes on the Structure and Properties of PLA/PVDF/ADR Blends 羧化碳纳米管对PLA/PVDF/ADR共混物结构和性能的影响
IF 2.7 3区 化学
Journal of Applied Polymer Science Pub Date : 2025-04-01 DOI: 10.1002/app.57060
Haibing Lu, Xinyun Hu, Li Yang, Wenxiu Liu, Shaojie Feng, Jian Wang, Yiyang Zhou, Ping Wang
{"title":"Effect of Carboxylated Carbon Nanotubes on the Structure and Properties of PLA/PVDF/ADR Blends","authors":"Haibing Lu,&nbsp;Xinyun Hu,&nbsp;Li Yang,&nbsp;Wenxiu Liu,&nbsp;Shaojie Feng,&nbsp;Jian Wang,&nbsp;Yiyang Zhou,&nbsp;Ping Wang","doi":"10.1002/app.57060","DOIUrl":"https://doi.org/10.1002/app.57060","url":null,"abstract":"<div>\u0000 \u0000 <p>Poly(lactide) (PLA)/polyvinylidene difluoride (PVDF)/chain extender containing epoxy functional groups (ADR)/carboxylate multiwall carbon nanotubes (MWCNTs-COOH) composites were prepared by combining solution blending and melt blending techniques. The dispersion state of MWCNTs-COOH in the composites was controlled by the in situ reaction between carboxyl groups in MWCNTs-COOH and epoxy groups in ADR, and the effects of MWCNTs-COOH on the structure and properties of the blends were systematically studied. The torque data demonstrated that the introduction of MWCNTs-COOH could enhance the melt strength of the blends. DSC data showed that the MWCNTs-COOH could act as a nucleating agent to improve the crystallization ability of PLA. DMA data and rheological behavior revealed that MWCNTs-COOH could reinforce the interaction between PLA and PVDF interface. The mechanical data indicated that the introduction of the MWCNTs-COOH enhanced the tensile strength of the composites, but significantly reduced the elongation at break. With the increase of MWCNTs-COOH content, the heat deflection temperature (HDT) of the material was obviously increased, and the dielectric constant of the composites showed an upward trend.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 25","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144100560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Antibacterial, Antiviral and Antifungal Activity of Zinc Oxide Tetrapod in Polypropylene Compared to Other Zinc Based Additives 聚丙烯中氧化锌四足体与其他锌基添加剂的抗菌、抗病毒和抗真菌活性比较
IF 2.7 3区 化学
Journal of Applied Polymer Science Pub Date : 2025-04-01 DOI: 10.1002/app.57051
Jérôme Vachon, Jawaher Alfurhood, Mohammed Al-Subaie, Lanti Yang, Sébastien Pierrat
{"title":"Antibacterial, Antiviral and Antifungal Activity of Zinc Oxide Tetrapod in Polypropylene Compared to Other Zinc Based Additives","authors":"Jérôme Vachon,&nbsp;Jawaher Alfurhood,&nbsp;Mohammed Al-Subaie,&nbsp;Lanti Yang,&nbsp;Sébastien Pierrat","doi":"10.1002/app.57051","DOIUrl":"https://doi.org/10.1002/app.57051","url":null,"abstract":"<div>\u0000 \u0000 <p>Polypropylene (PP) was compounded with 3 different zinc-based additives, zinc oxide tetrapod (t-ZnO), zinc oxide, and zinc pyrithione (ZPT) at different concentrations (0.1–2 wt%) and their antimicrobial (AM) efficacy toward bacteria, virus, and fungi was assessed. Additionally, caprylic acid (CA), aimed to be used as a promoter, showed inherent AM properties when compounded in PP (at 2 wt% loading, log <i>R</i> = 2.5 and 4.1 against \u0000 <i>Escherichia coli</i>\u0000 and \u0000 <i>Staphylococcus aureus</i>\u0000 , respectively) and a synergistic effect with zinc additives. CA enhanced AM performance, thus effectively requiring less overall concentration of Zn to provide the same effect (additives loadings down to 0.1 wt% for ZPT and down to 0.4 wt% for tZnO when CA was used in equal amount). The antiviral properties against H<sub>1</sub>N<sub>1</sub> of selected PP materials showed the superiority of ZPT compared to t-ZnO, with up to 93% viral reduction after 6 h for ZPT versus 85% for t-ZnO. Similarly, ZPT showed superior antifungal properties, with almost no fungal growth after 28 days incubation, while some growth was visible with a microscope on PP with t-ZnO additive at the same loading. The morphology of the zinc particles was assessed using different visualization techniques (CT-scan and SEM–EDX). A similar overall distribution with or without CA was obtained, yet with a different shape of the zinc particles in both cases (ZPT and t-ZnO). At high concentration in the PP matrix, CA may act as a plasticizer during extrusion and would thus help in retaining the inherent morphology of the zinc particles.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 25","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144100490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation and Study of a Waste Corrugated Cardboard Fiber-Based Foamed Material With Good Hydrophobicity and Flame-Retardant Properties 具有良好疏水阻燃性能的废瓦楞纸板纤维基泡沫材料的制备与研究
IF 2.7 3区 化学
Journal of Applied Polymer Science Pub Date : 2025-03-31 DOI: 10.1002/app.57078
Xiaolin Zhang, Ziang Zhou, Lizhen Xiong, Chao Chen, Na Li, Kang Li
{"title":"Preparation and Study of a Waste Corrugated Cardboard Fiber-Based Foamed Material With Good Hydrophobicity and Flame-Retardant Properties","authors":"Xiaolin Zhang,&nbsp;Ziang Zhou,&nbsp;Lizhen Xiong,&nbsp;Chao Chen,&nbsp;Na Li,&nbsp;Kang Li","doi":"10.1002/app.57078","DOIUrl":"https://doi.org/10.1002/app.57078","url":null,"abstract":"<div>\u0000 \u0000 <p>With environmental regulations becoming increasingly stringent, the application of traditional petroleum-based foam cushioning materials is significantly constrained. Consequently, biodegradable biomass foams demonstrating exceptional cushioning performance have garnered significant scientific attention. This study innovatively employs waste corrugated cardboard as raw material to fabricate biomass foams through a microwave-assisted foaming technique, systematically investigating the synergistic effects of fiber silane modification and kaolin doping on material performance. Characterization results revealed that the optimized foam achieved a maximum compressive stress of 0.53 MPa at 50% strain, with water absorption reduced by 20.1%. Combustion tests demonstrated superior thermal stability, exhibiting a 34.7% increase in limiting oxygen index compared with conventional counterparts. In summary, the silanization modification synergizes with kaolin to enhance char layer stability through chemical bonding and catalyzed carbonization, forming a multi-level flame retardant system. This synergy also improves the compatibility between fibers and fillers while significantly boosting the material's hydrophobic properties, thereby substantially increasing its safety and practicality. This work presents a sustainable strategy for upcycling packaging waste into high-performance functional materials, offering groundbreaking insights for developing next-generation eco-friendly cushioning solutions with dual moisture resistance and fire safety characteristics. The proposed methodology shows considerable potential for industrial translation in green packaging applications.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 26","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144191210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hybrid Carbosilane–Phenylene Dendrimers: How Does the Long Flexible Spacer Affect the Molecular Packing? 杂化碳硅烷-苯基树状大分子:长柔性间隔如何影响分子填充?
IF 2.7 3区 化学
Journal of Applied Polymer Science Pub Date : 2025-03-31 DOI: 10.1002/app.57082
Sofia N. Ardabevskaia, Elena S. Chamkina, Irina Yu. Krasnova, Sergey A. Milenin, Dmitriy A. Khanin, Nina V. Demchenko, Artem V. Bakirov, Olga A. Serenko, Zinaida B. Shifrina, Sergey N. Chvalun, Aziz M. Muzafarov
{"title":"Hybrid Carbosilane–Phenylene Dendrimers: How Does the Long Flexible Spacer Affect the Molecular Packing?","authors":"Sofia N. Ardabevskaia,&nbsp;Elena S. Chamkina,&nbsp;Irina Yu. Krasnova,&nbsp;Sergey A. Milenin,&nbsp;Dmitriy A. Khanin,&nbsp;Nina V. Demchenko,&nbsp;Artem V. Bakirov,&nbsp;Olga A. Serenko,&nbsp;Zinaida B. Shifrina,&nbsp;Sergey N. Chvalun,&nbsp;Aziz M. Muzafarov","doi":"10.1002/app.57082","DOIUrl":"https://doi.org/10.1002/app.57082","url":null,"abstract":"<div>\u0000 \u0000 <p>The synthesis of hybrid dendrimers composed of 1st, 2nd, and 3rd generation branched carbosilane macromolecules as the core, linked to a polyphenylene shell through a long hydrocarbon (C11) spacer, is described. This approach, employing a sequence of hydrosilylation and click reactions, starts with the preparation of 1-(11-azidoundecyl)-1,1,3,3-tetramethyldisiloxane followed by its reaction with allyl-functionalized carbosilane dendrimers, culminating in a CuAAC reaction with monoethynylhexaphenylbenzene. Structural analysis using SAXS and WAXS revealed the significant influence of the long alkyl spacers on crystal lattice formation, driven by the ordered motifs arising from the hexaphenylbenzene terminal units.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 26","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144191211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation and Properties of Waterborne Epoxy Anti-Corrosion Coatings Modified by Nano-SiO 2 and Flaky Al 纳米二氧化硅和片状铝改性水性环氧防腐涂料的制备及性能研究
IF 2.7 3区 化学
Journal of Applied Polymer Science Pub Date : 2025-03-31 DOI: 10.1002/app.57070
Anhua Feng, Xiaojun Yang, Dingyong He, Hanguang Fu, Mowei Yang
{"title":"Preparation and Properties of Waterborne Epoxy Anti-Corrosion Coatings Modified by Nano-SiO\u0000 2 and Flaky Al","authors":"Anhua Feng,&nbsp;Xiaojun Yang,&nbsp;Dingyong He,&nbsp;Hanguang Fu,&nbsp;Mowei Yang","doi":"10.1002/app.57070","DOIUrl":"https://doi.org/10.1002/app.57070","url":null,"abstract":"<div>\u0000 \u0000 <p>The issue of corrosion prevention for steel has long been a subject that draws widespread concern in the relevant fields. This study focused on the preparation of anti-corrosion coatings on Q235 steel surfaces. Waterborne epoxy resin (WEP) served as the film-forming matrix, with SiO<sub>2</sub> and Al utilized as fillers. Three groups of samples, namely WEP, WEP/SiO<sub>2</sub>, and WEP/SiO<sub>2</sub>/Al, were prepared. The innovation was introduced in the coating preparation process, where silica sol was substituted for silica powder, effectively augmenting the dispersion of the silica filler within the WEP matrix. The coating morphologies were characterized using a metallographic microscope and scanning electron microscope (SEM). Results showed that compared to the WEP coating, the WEP/SiO<sub>2</sub>/Al coating had fewer surface defects. For mechanical property evaluation, pencil hardness and adhesion tests were carried out. It was found that SiO<sub>2</sub> and Al synergistically boosted the pencil hardness of the WEP coating to a maximum of 4H while maintaining a similar adhesion grade to that of the WEP coating. Static water contact angle (WCA) tests indicated that the WCA values of WEP/SiO<sub>2</sub> and WEP/SiO<sub>2</sub>/Al coatings were 79° and 81°, higher than that of the WEP coating (76°), and retained good hydrophobicity after 20 wear cycles. Electrochemical impedance spectroscopy tests revealed that the impedance value of the WEP/SiO<sub>2</sub>/Al coating reached 2.17 × 10<sup>8</sup> Ω cm<sup>2</sup>, which is higher than that of the WEP/SiO<sub>2</sub> coating and the WEP coating. Moreover, its corrosion potential shifted positively by 248.8 mV compared to the WEP coating, signifying a significant enhancement in anti-corrosion performance. The excellent comprehensive performance of the WEP/SiO<sub>2</sub>/Al coating can be attributed to the fact that SiO<sub>2</sub> and Al synergistically enhance the mechanical and anti-corrosion properties of the WEP coating.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 25","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144100489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Promoting Proton Conductivity and Methanol-Resistance of PVdF-Based PEM Membrane by Incorporating Dispersive CNT Dotted With α-Zr(HPO4)2∙H2O α-Zr(HPO4)2∙H2O点缀分散碳纳米管促进pvdf基PEM膜的质子导电性和抗甲醇性
IF 2.7 3区 化学
Journal of Applied Polymer Science Pub Date : 2025-03-30 DOI: 10.1002/app.57083
Pengtao Lei, Xiangyang Xu, Chenyu Huang, Dongsheng Chen, Zhenkun Jiang
{"title":"Promoting Proton Conductivity and Methanol-Resistance of PVdF-Based PEM Membrane by Incorporating Dispersive CNT Dotted With α-Zr(HPO4)2∙H2O","authors":"Pengtao Lei,&nbsp;Xiangyang Xu,&nbsp;Chenyu Huang,&nbsp;Dongsheng Chen,&nbsp;Zhenkun Jiang","doi":"10.1002/app.57083","DOIUrl":"https://doi.org/10.1002/app.57083","url":null,"abstract":"<div>\u0000 \u0000 <p>To optimize the proton transport performance of polyvinylidene fluoride (PVdF), a proton exchange membrane (PEM) material, carbon nanotube (CNT), and zirconium hydrogen phosphate (ZrP) have been blended into the PVdF matrix. Adopting a hydrothermal synthesis route, the acidic ZrP can be better conjugated with the positively charged CNT functionalized by cetyltrimethylammonium bromide (CTAB). As visualized using electroscopes, ZrP nanocrystallines are intimately dotted and homogeneously distributed on CNT. The ZrP–PVdF interaction can be attributed to hydrogen bonding between hydroxyl and F-terminal groups. By incorporating well CNT/ZrP into PVdF via solution casting, the pore architecture can be regulated; namely, the macro-voids in PVdF are greatly reduced. The composite membranes exhibit tensile stress of 48–52 MPa while sustaining the thermal stability of PVdF. The incorporated CNT/ZrP can suppress void porosity and enhance film hydrophilicity. With improved wettability, the methanol permeability can be reduced to less than 2 × 10<sup>−9</sup> cm<sup>2</sup>∙s<sup>−1</sup>, ca. one-sixth that of pure PVdF. The proton conductivity for PVdF-CNT<sub>0.03</sub>-ZrP<sub>0.06</sub>, with CNT and ZrP mass content respectively 3 and 6 wt% that of PVdF, attains 0.089 S·cm<sup>−1</sup> at 100°C, showing upgraded conducting capability. The membrane selectivity can be remarkably enhanced, verifying that CNT/ZrP blending is a facile and profitable approach for PEM optimization.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 26","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144191199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced Proton Exchange Properties of Sulfonated Nanocellulose/Poly(Ether Imide) Composite Membranes for Direct Methanol Fuel Cells 直接甲醇燃料电池用磺化纳米纤维素/聚醚亚胺复合膜的质子交换性能
IF 2.7 3区 化学
Journal of Applied Polymer Science Pub Date : 2025-03-29 DOI: 10.1002/app.57059
Arisara Sriruangrungkamol, Sarayut Yongprapat, Apichai Therdthianwong, Wunpen Chonkaew
{"title":"Enhanced Proton Exchange Properties of Sulfonated Nanocellulose/Poly(Ether Imide) Composite Membranes for Direct Methanol Fuel Cells","authors":"Arisara Sriruangrungkamol,&nbsp;Sarayut Yongprapat,&nbsp;Apichai Therdthianwong,&nbsp;Wunpen Chonkaew","doi":"10.1002/app.57059","DOIUrl":"https://doi.org/10.1002/app.57059","url":null,"abstract":"<div>\u0000 \u0000 <p>This work aims to enhance the proton exchange membrane properties of cellulose nanofibrils (CNFs)-based composites. CNFs are modified with sulfosuccinic acid (SSA) prior to immersion in sulfonated poly(ether imide) (SPEI) solution to prepare the sulfonated modified CNF/SPEI composite membranes (<i>x</i>SCNF/SPEI). Various molar ratios of SSA to CNF are examined, with the ratio represented as <i>x</i>, ranging from 0.2 to 1.0. Results indicate that the proton conductivity of the SCNF/SPEI composite membrane could be enhanced by creating the ionic path and hydrophilicity throughout the membrane. The higher SSA/CNF molar ratio (<i>x</i>) enhances the packing of CNF via esterification, increases the number of sulfonated ionic sites, and improves proton transport of the <i>x</i>SCNF/SPEI composite. The 0.8SCNF/SPEI membrane achieves optimal performance, with proton conductivity reaching 16.68 mS·cm<sup>−1</sup> and IEC of 1.01 meq·g<sup>−1</sup>. Its proton conductivity reflects the optimal balance of water uptake, and sulfonic ionic sites, with the Grotthuss mechanism being a major mechanism for proton transport. At 80°C, the 0.8SCNF/SPEI membrane reaches a power density of 4.32 mW·cm<sup>−2</sup>. Besides, it exhibits the lowest methanol permeability at 8.22 × 10<sup>−8</sup> cm<sup>2</sup>·s<sup>−1</sup>, which is two orders of magnitude lower than Nafion. This study highlights a sustainable and high-performance membrane solution for next-generation fuel cells.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 25","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144100858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
pH-Driven Multilevel Controllable Injectable Hydrogel for Wound Sealing 用于伤口密封的ph驱动多级可控注射水凝胶
IF 2.7 3区 化学
Journal of Applied Polymer Science Pub Date : 2025-03-29 DOI: 10.1002/app.57037
Yunpeng Ji, Sidi Li, Jin Zhao, Xubo Yuan
{"title":"pH-Driven Multilevel Controllable Injectable Hydrogel for Wound Sealing","authors":"Yunpeng Ji,&nbsp;Sidi Li,&nbsp;Jin Zhao,&nbsp;Xubo Yuan","doi":"10.1002/app.57037","DOIUrl":"https://doi.org/10.1002/app.57037","url":null,"abstract":"<div>\u0000 \u0000 <p>While various biomedical sealants exist, many suffer from several drawbacks. For example, hydrogels with superior sealing properties often exhibit limitations such as conflict-free, individual, and flexible control over injectability and gel physical properties, as well as limitations regarding applications in diverse sealing scenarios. This article presents PL/OHA, a pH-driven injectable hydrogel sealant designed for wound sealing. PL/OHA employs dynamic bonds, including Schiff base and hydrogen bonds, to produce a biodegradable and biocompatible hydrogel sealant. By individually adjusting the pH value and solid content, the gelation time, mechanical properties, and adhesion strength of PL/OHA can be flexibly controlled to meet different requirements in various wound-sealing contexts. Experiments prove that the injection time of the hydrogel can be flexibly controlled, from several seconds to tens of minutes, by changing the pH value. It also exhibits adjustable mechanical properties. When the solid content of the hydrogel is increased from 24% to 36%, the tensile strength increases from 10.12 to 25.12 kPa, and the compressive strength increases from 97.50 to 516.61 kPa. PL/OHA also exhibits remarkable antibacterial activity, wound healing promotion capacity, and excellent biocompatibility. These properties make it a promising candidate for future clinical applications in wound sealing.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 24","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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