Journal of Applied Polymer Science最新文献_第5页

Evaluation of Surface Quality in SLS-Printed Nylon 12 Parts for Hygienic Applications in the Food Industry 食品工业卫生用sls印刷尼龙12零件表面质量评价

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2026-03-21 Epub Date: 2026-02-16 DOI: 10.1002/app.70566

Elizabeth Cristine Adam Trindade, Jean-Sébastien Deschênes, Jean Brousseau

{"title":"Evaluation of Surface Quality in SLS-Printed Nylon 12 Parts for Hygienic Applications in the Food Industry","authors":"Elizabeth Cristine Adam Trindade, Jean-Sébastien Deschênes, Jean Brousseau","doi":"10.1002/app.70566","DOIUrl":"https://doi.org/10.1002/app.70566","url":null,"abstract":"This study investigates the surface quality and hygienic suitability of nylon 12 3D-printed components for food industry applications. The research aimed to determine whether surface treatment influences cleanability and disinfection efficiency. Samples of food-grade nylon 12 (PA12) were produced via Selective Laser Sintering (SLS). Half of the samples received VaporFuse Surface (VFS) posttreatment to reduce surface roughness while the other ones did not. Microbiological tests assessed the sanitization efficiency of peracetic acid (PAA) at 400 ppm against \u0000 Listeria monocytogenes\u0000 , \u0000 Staphylococcus aureus\u0000 , and \u0000 Escherichia coli\u0000 on both surfaces. Comparable log reductions (~6.5–6.8) were achieved for both untreated and treated samples, indicating that PAA performance was not affected by surface condition under the tested parameters. To complement these results, a nondestructive surface inspection adapted from ISO 3452 series evaluated pigment retention and surface continuity as indirect indicators of cleanability. The results showed treated samples exhibited smoother surfaces and reduced roughness, improving cleanability and indicating a higher potential for hygienic use. These findings suggest that microbiological results alone may not fully capture cleanability performance, and that surface quality assessment provides critical complementary insight when evaluating 3D-printed components for food-contact applications.","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 17","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/app.70566","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147566184","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

Reuse of Recycled Short Glass Fibers for Enhancing the Flexural, Interlaminar Shear, and Fracture Performance of Glass/Epoxy Composites: A Sustainable Alternative 再生短玻璃纤维的再利用以增强玻璃/环氧复合材料的弯曲、层间剪切和断裂性能：一种可持续的替代方法

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2026-03-21 Epub Date: 2026-02-09 DOI: 10.1002/app.70551

Rohith Gandi, Parimal Jana, Manjeet Rani, Sunny Zafar, Madhab Bera, Subrata Mukherjee, Bankim Chandra Ray, Rajesh Kumar Prusty

{"title":"Reuse of Recycled Short Glass Fibers for Enhancing the Flexural, Interlaminar Shear, and Fracture Performance of Glass/Epoxy Composites: A Sustainable Alternative","authors":"Rohith Gandi, Parimal Jana, Manjeet Rani, Sunny Zafar, Madhab Bera, Subrata Mukherjee, Bankim Chandra Ray, Rajesh Kumar Prusty","doi":"10.1002/app.70551","DOIUrl":"https://doi.org/10.1002/app.70551","url":null,"abstract":"<div>\u0000 \u0000 The recycling and reuse of glass fiber–reinforced epoxy composites remain significant challenges due to the thermoset nature of epoxy matrices, which limits conventional recycling routes. In this study, an effective reuse strategy for recycled short glass fibers (RSGFs) is proposed, contributing to the advancement of sustainable composite recycling and circular economy practices. The influence of incorporation of different concentrations (0.1, 0.3, 0.5, and 0.7 wt%) of RSGFs having length ~0.5–2 mm on the fundamental mechanical properties of virgin glass fiber epoxy composites (VGFECs) is explored here. Among all the RSGF concentrations, 0.3% RSGFs in VGFEC improved the flexural strength by ~18%, the flexural modulus by ~19%, and the interlaminar shear strength by ~22%. Simultaneously, significant improvements in both mode I and mode II interlaminar fracture toughness were observed, which were ~54% and ~30% respectively when VGFEC was reinforced with 0.3% RSGFs. Dynamic mechanical thermal analysis revealed that the storage modulus of 0.3 RSGF-VGFEC was higher by ~20% than VGFEC. Fractography of specimens revealed interesting features like RSGF pull-outs, shear cusps, fiber imprints, and marks of RSGFs.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 17","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147564243","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

High-Performance Self-Lubricating Epoxy Composites Using Bioinspired Silica Microcapsules: Interfacial Engineering and Tribological Performance 使用生物硅微胶囊的高性能自润滑环氧复合材料：界面工程和摩擦学性能

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2026-03-21 Epub Date: 2026-02-09 DOI: 10.1002/app.70556

Jun-Feng Su, Xiao-Nan Su, Xin-Yu Wang, Qin-Yu Xing, Peng Yang, Zhi-Yong Tan

{"title":"High-Performance Self-Lubricating Epoxy Composites Using Bioinspired Silica Microcapsules: Interfacial Engineering and Tribological Performance","authors":"Jun-Feng Su, Xiao-Nan Su, Xin-Yu Wang, Qin-Yu Xing, Peng Yang, Zhi-Yong Tan","doi":"10.1002/app.70556","DOIUrl":"https://doi.org/10.1002/app.70556","url":null,"abstract":"<div>\u0000 \u0000 This study introduces high-performance self-lubricating epoxy composites incorporating bioinspired silica microcapsules. Fabricated via optimized oil-in-water emulsion, the microcapsules (8–22 μm diameter, 0.5–0.6 μm shell thickness) demonstrate excellent thermal stability (200°C for 1 h) and high polyalphaolefin (PAO) encapsulation efficiency. At 5.0 wt% loading, the composite achieves outstanding tribological performance with an 89% reduction in both friction coefficient (from 0.56 to 0.08) and wear rate (from 120 to 13 × 10−6 mm3/Nm) under 5 N load, while retaining 85% of compressive strength. Microstructural analysis confirms uniform microcapsule dispersion and strong interfacial adhesion with the epoxy matrix. The composite exhibits a unique stress-responsive lubrication mechanism where mechanical triggers cause microcapsule rupture, releasing PAO to form continuous lubricating films combined with silica fragments. This dynamic process is quantitatively described by a conceptual kinetic framework model that accounts for stress-dependent rupture and lubricant entrainment. The excellent balance of tribological properties and mechanical integrity demonstrated under laboratory conditions makes these composites promising candidates for further investigation toward demanding applications.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 17","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147564445","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

Toluene Uptake and Outgassing by a 3D-Printed Silicone and the Impact on Mechanical Performance 3d打印有机硅的甲苯吸收和放气及其对机械性能的影响

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2026-03-21 Epub Date: 2026-02-18 DOI: 10.1002/app.70569

Nancy Merino, Maira R. Cerón, Hannah V. Eshelman, Karly Knox, Sarah C. Chinn, Gregory W. Nyce, Patrick G. Campbell

{"title":"Toluene Uptake and Outgassing by a 3D-Printed Silicone and the Impact on Mechanical Performance","authors":"Nancy Merino, Maira R. Cerón, Hannah V. Eshelman, Karly Knox, Sarah C. Chinn, Gregory W. Nyce, Patrick G. Campbell","doi":"10.1002/app.70569","DOIUrl":"https://doi.org/10.1002/app.70569","url":null,"abstract":"<div>\u0000 \u0000 Silicone elastomers have advantageous physical properties and are widely used in various applications. Additive manufacturing (AM) of silicones provides additional utility by enabling tunable mechanical and functional properties. However, the performance of these elastomers deteriorates over time with exposure to environmental stressors. Organic solvents and volatile organic compounds (VOCs) are stressors that can cause dimensional changes to silicones with exposure and impact the overall function. Yet, the effects of such exposure on mechanical performance, including load response (LR), are not well understood. In this study, we investigated the impact of a nonpolar solvent, toluene, on AM silicone material properties and compressive load. We observed that AM silicones rapidly absorbed toluene and swelled, leading to an increase in relative LR. Toluene concentration and compression did not affect uptake or swelling rates. In contrast, outgassing rates were slower for compressed coupons compared to uncompressed specimens, attributed to geometric constraints and polymer network changes impacting toluene diffusion outward. Compression also pinned the AM silicones at an enlarged state, significantly reducing relative LR after outgassing. Depending on toluene concentrations and compression, AM silicones can remain robust against toluene exposure and recover their initial printing geometry and mechanical performance after toluene outgassing and polymer relaxation.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 17","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147566683","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

An On-Demand Antibacterial Hyaluronic Acid Hydrogel With Integrated Tissue Adhesion and Strain Sensing 具有组织粘附和应变传感功能的按需抗菌透明质酸水凝胶

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2026-03-21 Epub Date: 2026-02-23 DOI: 10.1002/app.70555

Jiayan Luo, Jinquan Huang, Jiwei Huang, Wenzhai Cao, Junying Chen

{"title":"An On-Demand Antibacterial Hyaluronic Acid Hydrogel With Integrated Tissue Adhesion and Strain Sensing","authors":"Jiayan Luo, Jinquan Huang, Jiwei Huang, Wenzhai Cao, Junying Chen","doi":"10.1002/app.70555","DOIUrl":"https://doi.org/10.1002/app.70555","url":null,"abstract":"<div>\u0000 \u0000 Wound healing is frequently accompanied by bacterial infections, and the ongoing antibacterial activity can impact the healing process. Therefore, it is crucial to develop a smart antibacterial material that can be utilized and halted at will. Herein, we fabricated a multifunctional hyaluronic acid-based hydrogel integrated with novel conductive polypyrrole–polydopamine (PPy/PDA) nanoparticles. The hydrogel network is crosslinked via boronate ester bonds, forming a hydrogel with a porosity of approximately 60%, and rheological experiments demonstrate its excellent self-healing ability. This composite hydrogel exhibits superior photothermal conversion efficiency and electrical conductivity, which are synergistically enhanced by the incorporation of PPy/PDA nanohybrids. Near-infrared irradiation serves as a noninvasive stimulus to trigger its antibacterial activity, achieving 99% bactericidal efficacy against both \u0000 Escherichia coli\u0000 and \u0000 Staphylococcus aureus\u0000 upon NIR exposure. Electrical characterization reveals a conductivity range of 10−4 to 10−3 S/cm, enabling its application as a sensitive strain sensor for real-time monitoring of joint flexion and other biomechanical movements. Furthermore, the hydrogel demonstrates robust tissue adhesion properties and favorable biocompatibility profiles. These findings highlight the potential of this multifunctional hydrogel as an intelligent wound dressing for integrated wound monitoring and on-demand infection control.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 17","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147568197","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

Experimental and Theoretical Characterization on the Temperature Dependent Tensile Strength of FRP Composites Considering Interfacial Properties and Fiber Agglomeration 考虑界面性能和纤维团聚的FRP复合材料温度相关拉伸强度的实验和理论表征

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2026-03-21 Epub Date: 2026-02-09 DOI: 10.1002/app.70553

Shifeng Zheng, Zhouyi Ju, Ying Li, Weiguo Li

{"title":"Experimental and Theoretical Characterization on the Temperature Dependent Tensile Strength of FRP Composites Considering Interfacial Properties and Fiber Agglomeration","authors":"Shifeng Zheng, Zhouyi Ju, Ying Li, Weiguo Li","doi":"10.1002/app.70553","DOIUrl":"https://doi.org/10.1002/app.70553","url":null,"abstract":"<div>\u0000 \u0000 Fiber reinforced polymer (FRP) composites have emerged as critical materials in the aerospace field. In the application, the characterization of the mechanical properties of composites with different fiber contents at different temperatures has long constituted a significant research area. This study conducted a combined experimental and theoretical approach to investigate the effects of fiber content and temperature on the mechanical properties of FRP composites. Firstly, this study examined the mechanical responses of tensile specimens of composites; it was found that the degree of nonlinearity in mechanical behavior increases with higher fiber content, while both tensile strength and failure strain initially rise and then decline as fiber content. Furthermore, the tensile tests at varying temperatures revealed a significant decrease in tensile strength with increasing temperature. Finally, based on the Force-Heat Equivalence Energy Density Principle (FHEEDP), this work established a temperature dependent tensile strength (TDTS) model for FRP composites. It considers the influences of temperature, fiber/matrix properties, and residual thermal stresses, particularly the interfacial performance and fiber agglomeration. The model employs a physically-based theoretical method, enabling prediction of the TDTS of FRP composites. This study provides the theoretical basis for predicting their strength performance and reliability evaluation of FRP composites under service conditions.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 17","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147564441","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

Engineering Electrospun PCL/PEO Membranes With ECM-Like Architecture and Tunable Hydrophilicity as Functional Wound Dressings 具有ecm样结构和可调亲水性的静电纺PCL/PEO膜作为功能性伤口敷料

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2026-03-21 Epub Date: 2026-02-09 DOI: 10.1002/app.70557

Ronaldo Bianchini da Silveira, Maria Fernanda Pedro Ebs, Renata Bochanoski, Mateus de Assunção Hofmann, Oscar Rubem Klegues Montedo, Thauan Gomes, Sabrina Arcaro

{"title":"Engineering Electrospun PCL/PEO Membranes With ECM-Like Architecture and Tunable Hydrophilicity as Functional Wound Dressings","authors":"Ronaldo Bianchini da Silveira, Maria Fernanda Pedro Ebs, Renata Bochanoski, Mateus de Assunção Hofmann, Oscar Rubem Klegues Montedo, Thauan Gomes, Sabrina Arcaro","doi":"10.1002/app.70557","DOIUrl":"https://doi.org/10.1002/app.70557","url":null,"abstract":"Skin injuries resulting from trauma, burns, or chronic conditions such as diabetes often require advanced medical interventions, as conventional dressings provide only passive protection with limited exudate absorption and minimal contribution to healing. In this study, electrospun poly(ε-caprolactone)/poly(ethylene oxide) (PCL/PEO) membranes were engineered to couple extracellular matrix (ECM)-like architecture with tunable wettability, fluid absorption, and degradation to achieve enhanced wound closure. By adjusting electrospinning parameters, uniform fibers (2.4–7.4 μm) with porosity of 63%–77% and pore sizes of 17–25 μm were obtained. FTIR analysis confirmed the successful blend of PCL and PEO, while wettability, fluid absorption, and membrane degradation increased proportionally with PEO content; the optimized PCL7:1PEO membrane exhibited a contact angle below 60° and fluid uptake of 361%. Biological assays demonstrated preserved cytocompatibility and enhanced fibroblast migration, achieving wound closure of 86.8% ± 14.6% for PCL7:1PEO compared with 68.3% ± 7.7% for pristine PCL and 75.6% ± 3.8% for the control. These findings highlight the potential of PCL/PEO electrospun membranes as functional wound dressings, offering prolonged use, improved fluid management, and a favorable microenvironment for tissue repair, representing a promising alternative to conventional treatments.","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 17","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/app.70557","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147564475","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

Evaluation of Surface Quality in SLS-Printed Nylon 12 Parts for Hygienic Applications in the Food Industry 食品工业卫生用sls印刷尼龙12零件表面质量评价

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2026-03-21 Epub Date: 2026-02-16 DOI: 10.1002/app.70566

Elizabeth Cristine Adam Trindade, Jean-Sébastien Deschênes, Jean Brousseau

{"title":"Evaluation of Surface Quality in SLS-Printed Nylon 12 Parts for Hygienic Applications in the Food Industry","authors":"Elizabeth Cristine Adam Trindade, Jean-Sébastien Deschênes, Jean Brousseau","doi":"10.1002/app.70566","DOIUrl":"https://doi.org/10.1002/app.70566","url":null,"abstract":"This study investigates the surface quality and hygienic suitability of nylon 12 3D-printed components for food industry applications. The research aimed to determine whether surface treatment influences cleanability and disinfection efficiency. Samples of food-grade nylon 12 (PA12) were produced via Selective Laser Sintering (SLS). Half of the samples received VaporFuse Surface (VFS) posttreatment to reduce surface roughness while the other ones did not. Microbiological tests assessed the sanitization efficiency of peracetic acid (PAA) at 400 ppm against \u0000 Listeria monocytogenes\u0000 , \u0000 Staphylococcus aureus\u0000 , and \u0000 Escherichia coli\u0000 on both surfaces. Comparable log reductions (~6.5–6.8) were achieved for both untreated and treated samples, indicating that PAA performance was not affected by surface condition under the tested parameters. To complement these results, a nondestructive surface inspection adapted from ISO 3452 series evaluated pigment retention and surface continuity as indirect indicators of cleanability. The results showed treated samples exhibited smoother surfaces and reduced roughness, improving cleanability and indicating a higher potential for hygienic use. These findings suggest that microbiological results alone may not fully capture cleanability performance, and that surface quality assessment provides critical complementary insight when evaluating 3D-printed components for food-contact applications.","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 17","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/app.70566","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147566182","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

Temperature- and pH-Responsive Near-Infrared-Activated Hydrogel With Synergistic Antibacterial Activity 具有协同抗菌活性的温度和ph响应型近红外活化水凝胶

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2026-03-21 Epub Date: 2026-02-26 DOI: 10.1002/app.70561

Zhiyuan Huang, Chengzong Ji, Xueli Zang

{"title":"Temperature- and pH-Responsive Near-Infrared-Activated Hydrogel With Synergistic Antibacterial Activity","authors":"Zhiyuan Huang, Chengzong Ji, Xueli Zang","doi":"10.1002/app.70561","DOIUrl":"https://doi.org/10.1002/app.70561","url":null,"abstract":"<div>\u0000 \u0000 The escalating threat of multidrug-resistant bacteria highlights the urgent need for innovative nonantibiotic strategies. Herein, we report a multifunctional smart hydrogel, P(NIPAM-co-MAA/OHA)@PDA, engineered for synergistic wound therapy. It was fabricated via one-pot free-radical copolymerization of N-isopropylacrylamide (NIPAM) and methacrylic acid (MAA), with simultaneous incorporation of oxidized hyaluronic acid (OHA) and polydopamine nanoparticles (PDA). The designed hydrogel exhibits dual temperature and pH responsiveness: the PNIPAM network enables thermally triggered bacterial sequestration under physiological temperature conditions (near body temperature), while the MAA component enhances interfacial interactions with bacterial surfaces in the acidic microenvironment of infected wounds. Notably, the as-prepared hydrogel demonstrates excellent mechanical properties, including a tensile elongation up to 10 times its original length, superior self-healing capability, and strong tissue adhesion performance. Upon near-infrared (NIR) irradiation, the embedded PDA nanoparticles efficiently generate localized hyperthermia, which achieves direct and effective ablation of the sequestration pathogens. This unique integration of responsive bacterial sequestration and NIR-triggered thermal ablation confers a potent synergistic antibacterial effect, with eradication rates exceeding 80% against both \u0000 Escherichia coli\u0000 and \u0000 Staphylococcus aureus\u0000 . Furthermore, the hydrogel shows excellent biocompatibility and can promote fibroblast proliferation in vitro, highlighting its great potential for clinical wound healing applications.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 17","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147569140","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 Gas Separation Performance of Ionic Liquid Modified Covalent Organic Framework/Fluorinated Polyimide Mixed Matrix Membranes 离子液体改性共价有机骨架/氟化聚酰亚胺混合基质膜的制备及气体分离性能

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2026-03-21 Epub Date: 2026-02-09 DOI: 10.1002/app.70563

Shanshan Wu, Chao Shan, Junhao Mo, Junjie Qu, Chanjuan Liu, Xiaohua Huang

{"title":"Preparation and Gas Separation Performance of Ionic Liquid Modified Covalent Organic Framework/Fluorinated Polyimide Mixed Matrix Membranes","authors":"Shanshan Wu, Chao Shan, Junhao Mo, Junjie Qu, Chanjuan Liu, Xiaohua Huang","doi":"10.1002/app.70563","DOIUrl":"https://doi.org/10.1002/app.70563","url":null,"abstract":"<div>\u0000 \u0000 In this work, a novel fluorinated diamine monomer, 3-methoxy-4-fluoro-4,4′-diaminotriphenylamine (FMBDA), was synthesized through molecular design. And then copolymerized with 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6FDA) and 4,4′-oxydianiline (ODA) to prepare fluorinated polyimide (FPI). Subsequently, the covalent organic framework (TpDT) was modified with the imidazolium ionic liquid [Emim][Tf2N] (IL) via solution impregnation, and the resulting IL@TpDT was doped into FPI to prepare IL@TpDT/FPI mixed matrix membranes (MMMs) with varying mass fractions. The obtained MMMs exhibited excellent thermal properties (T\u0000 g > 295°C, T\u0000 10% > 528°C), commendable mechanical properties (tensile strength > 81.08 MPa), and outstanding hydrophobic properties (contact angle > 86.90°). IL modification endows TpDT with improved CO2 affinity and a smaller pore size, thereby enhancing the membrane material CO2 adsorption selectivity. Simultaneously, the porous structure of the nanocomposite boosts gas adsorption and diffusion, further improving gas separation performance. At an IL@TpDT loading of 3 wt%, CO2 and O2 permeability increased by 222% and 123%, respectively, compared to the FPI matrix membrane. The CO2/N2 and O2/N2 separation factors rose to 27.27 and 4.81, respectively.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 17","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147564392","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