Polymer Composites最新文献

{"title":"Enhancing the Interfacial Interactions and Thermal Oxidative Mechanical Properties of Aramid Fiber‐Reinforced Epoxy Composites Through Hyperbranched Epoxy‐Grafted Multi‐Walled Carbon Nanotubes","authors":"Hongke Peng, Yingqing Zhan, Zhoukun He, Fan Lei, Zhongxiang Bai, Pan Wang, Kui Li, Ying Li, Fei Zhong, Wei Feng, Xulin Yang","doi":"10.1002/pc.70244","DOIUrl":"https://doi.org/10.1002/pc.70244","url":null,"abstract":"ABSTRACT Enhancing the interfacial properties of aramid fiber‐reinforced polymer (AFRP) composites while maintaining thermal stability remains a significant challenge in advanced composite engineering. This study introduces an innovative approach by incorporating carbon nanotubes (CNTs) functionalized with hyperbranched epoxy (HPEP) to construct multi‐level micro/nano interfaces in AFRP composites. The grafting efficiency of HPEP onto CNTs was confirmed to be 14.14%, facilitating superior dispersion and interfacial bonding. Incorporating 2 wt% CNTs‐g‐HPEP into AFRP composites resulted in remarkable increases of 41.3% in flexural strength and 30.9% in interlaminar shear strength. These composites, featuring multi‐level micro/nano interfaces, demonstrated exceptional retention of mechanical properties after thermal aging. This enhancement is attributed to the synergistic reinforcement effect of CNTs‐g‐HPEP on the matrix‐fiber interface. The epoxy groups in CNTs‐g‐HPEP co‐cured with the polymer matrix, while the flexible hyperbranched chains enhanced the mechanical interlocking with AFs. They also show exceptional thermal‐oxidative mechanical performance, with high mechanical retention ratios after thermal aging. The thermal failure analysis indicated that with the increasing temperature, the failure mode of the AFRP composite gradually shifted from fiber‐matrix debonding to matrix degradation. This study provides a robust strategy for the design and development of next‐generation high‐performance AFRP composites, offering significant potential for applications in demanding environments.","PeriodicalId":510403,"journal":{"name":"Polymer Composites","volume":"47 2","pages":"1676-1692"},"PeriodicalIF":0.0,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147919902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flexible Conductive Supramolecular Polyurethane Elastomer Composites With High Mechanical Strength","authors":"Li Yuan, Tian Pan, Guozheng Liang, Aijuan Gu","doi":"10.1002/pc.70202","DOIUrl":"https://doi.org/10.1002/pc.70202","url":null,"abstract":"ABSTRACT Flexible conductive supramolecular polyurethane elastomer composite with high strength was fabricated via the in situ formation of silver nanoparticles (AgNPs) in the surface layer of supramolecular polyurethane elastomer (SPUE) when soaked in silver salt solution. The as‐prepared SPUE/AgNPs composites possessed high tensile strengths of 63–76 MPa, elongations at break of 783%–879%, toughnesses of 230–374 MJ m −3 , and Young's moduli of 7.9–14 MPa. Owing to the compact AgNP layer, SPUE/AgNPs composites had high electrical conductivities of 0.3–3.7 S cm −1 . When SPUE/AgNPs composites were stretched to a strain of 0.5%, they could show short response time (80–82 ms) and recovery time (140–180 ms). SPUE/AgNPs composites could display stable relative resistance change (Δ R / R 0 ) values and high strain sensitivities over a wide range of tensile strains (0.05%–200%). Due to the abundant hydrogen bonds, the damaged SPUE/AgNPs composite could be healed under heat treatment condition, and the healed composite could show stable Δ R / R 0 similar to that of the fresh SPUE/AgNPs composite. Additionally, SPUE/AgNPs composites had good shape memory performances and solvent‐resistances. The as‐prepared SPUE/AgNPs composites could be used as flexible strain sensors and control switches.","PeriodicalId":510403,"journal":{"name":"Polymer Composites","volume":"47 2","pages":"1068-1080"},"PeriodicalIF":0.0,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/pc.70202","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147920082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving Polarization Hysteresis to Enhance Dielectric and Energy Storage Performance of Polyvinylidene Difluoride‐Based Nanocomposite Films","authors":"Ting Sun, Chuanyezi Cai, Jiacheng Guo, Bixuan Zhu, Xi Chen, Yu He, Weihao Zhong, Ruiqi He, Ye Lu, Jianjun Zhang, Sude Ma","doi":"10.1002/pc.70158","DOIUrl":"https://doi.org/10.1002/pc.70158","url":null,"abstract":"ABSTRACT As a ferroelectric polymer with excellent performance, polyvinylidene difluoride (PVDF) has an irreplaceable position in film capacitors. However, the problem of polarization hysteresis needs to be effectively improved. Consequently, linear polymer polymethyl methacrylate (PMMA) was introduced into the PVDF blend, and PMMA could inhibit the polarization behavior of PVDF in the amorphous region, thus weakening the local polarization field and reducing the coherent coupling between ferroelectric domains. In addition, high dielectric constant barium titanate (BaTiO 3 ) nanoparticles were introduced to enhance the depolarization field inside the crystalline phase, and the synergistic effect of PMMA and BaTiO 3 improved the polarization hysteresis and dielectric properties of PVDF. Preparation of PVDF/PMMA/BaTiO 3 films was undertaken through the utilization of a spin‐coating process, and the film thicknesses were uniform without obvious aggregation. The maximum discharge energy density of the 30 wt.% BaTiO 3 nanocomposite film was 1.87 J/cm 3 , and the dielectric loss (tanδ) can be stabilized at 0.12 and below. At 100 Hz, the E b and tanδ of the 30 wt.% BaTiO 3 nanocomposite film were 1400 kV/cm and 0.12, respectively. The favorable performance of the films has also been displayed by the phase field simulation results.","PeriodicalId":510403,"journal":{"name":"Polymer Composites","volume":"47 1","pages":"470-483"},"PeriodicalIF":0.0,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147915161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of Smart Photochromic Transparent Wood With Enhanced Optical and Mechanical Properties","authors":"Nian Zhang, Xingbei Zhou, Shiyan Yin, Xuan Wang, Hang Su, Xu Yang, Yaoli Zhang, Liping Cai, Jianxiong Lv","doi":"10.1002/pc.70157","DOIUrl":"https://doi.org/10.1002/pc.70157","url":null,"abstract":"ABSTRACT In the effort to multi‐functionalize transparent wood, photochromic transparent wood (PTW) was investigated. However, previous studies reported unsatisfactory overall performance of PTW in terms of optical and light response time, posing significant challenges for its applications in areas such as photochromic lenses, smart doors, and windows. A transparent wood composite exhibiting rapid photochromic performance was fabricated by infusing delignified wood with a pre‐polymerized methyl methacrylate (PMMA) solution containing microcapsules of 1,3,3‐trimethylindoline‐6′‐(1‐piperidinyl)spirooxazine and 3,3‐dimethyl‐3H‐naphthaleno[2,1‐b] pyran. Microcapsules were uniformly dispersed within the wood cell cavities and copolymerized with PMMA, thereby endowing the material with superior optical transparency (73%), enhanced mechanical strength (30.2 MPa), excellent photosensitivity (1 s response time, 390 s recovery time), and effective anti‐glare performance. Compared with traditional photochromic materials, the composites developed in this study exhibit not only enhanced color‐changing response speed but also improved stability, thereby ensuring their reliability for long‐term applications (50 cycles). Owing to these distinctive properties, the photochromic transparent wood composite is poised for broad use in intelligent windows, energy‐efficient buildings, privacy panels, and dynamic interior design, color‐changing lenses, automotive and aerospace, solar energy and light management, and other intelligent optical devices.","PeriodicalId":510403,"journal":{"name":"Polymer Composites","volume":"47 1","pages":"458-469"},"PeriodicalIF":0.0,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147901806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and Electromagnetic Wave Absorbing Properties of <scp>FeCoNi</scp> Nanoparticle‐Bacterial Cellulose Based Carbon Materials","authors":"Yilin Wu, Qilong Sun, Xiaoyun Long, Jianlong Ge","doi":"10.1002/pc.70005","DOIUrl":"https://doi.org/10.1002/pc.70005","url":null,"abstract":"ABSTRACT In recent years, the rapid advancement of electronic devices and communication technology has led to a significant increase in electromagnetic radiation, necessitating the development of efficient electromagnetic wave absorbing materials. By incorporating iron, cobalt, and nickel nanoparticles (FeCoNi nanoparticles) into carbon materials, the magnetic loss characteristics and electromagnetic wave absorption capability of the material were significantly improved. This investigation utilized a hydrothermal method to synthesize bacterial cellulose‐derived three‐dimensional carbon materials loaded with FeCoNi nanoparticles (C@FeCoNi) with varying bacterial cellulose (BC) contents, and their electromagnetic wave absorption properties were evaluated. The results indicated that C@FeCoNi‐60 exhibited optimal absorption performance, with a minimum reflection loss of −46.4 dB at 3 mm thickness and 8.8 GHz frequency and an effective absorption bandwidth of 3.35 GHz (7.78 to 11.13 GHz). The exceptional absorption performance of this composite was attributed primarily to the synergistic effects of multiple internal reflections, dipole polarization, conductive loss, and interfacial polarization. This study offers a valuable approach for developing efficient electromagnetic wave‐absorbing materials.","PeriodicalId":510403,"journal":{"name":"Polymer Composites","volume":"46 17","pages":"15782-15794"},"PeriodicalIF":0.0,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/pc.70005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147921324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interface Enhancement of Unidirectional Carbon Fiber/Epoxy Resin Composites Using Bio‐Based Hyperbranched Waterborne Polyurethane With Biomimetic Rhizome Structure","authors":"Mingxuan Yu, Jiaqi Li, Mengyao Zhang, Xin Song, Chao Zhou, Liu L, Guangfeng Wu","doi":"10.1002/pc.70188","DOIUrl":"https://doi.org/10.1002/pc.70188","url":null,"abstract":"ABSTRACT The inert nature of carbon fiber (CF) surfaces leads to inadequate bonding strength with resin matrices, thereby constraining the overall performance of its composite materials. Sizing agents are pivotal for enhancing the wettability and interfacial adhesion of CF surfaces. However, most linear‐structured sizing agents fail to fulfill the interfacial performance requirements of composite materials. Inspired by the rhizome structure, a bio‐based hyperbranched waterborne polyurethane sizing agent (WPU‐M) with a hyperbranched structure was synthesized successfully to address this limitation. A key intermediate, polyether–polyester polyol (MEP), was first synthesized via the esterification of L‐malic acid and polyethylene glycol (PEG). The hyperbranched architecture of WPU‐M arises from the multifunctionality of L‐malic acid, which facilitates the formation of a highly branched structure during the polyurethane synthesis. When WPU‐M is applied to carbon fiber/epoxy resin (CF/EP) composites, its distinctive biomimetic rhizome structure significantly enhances its interfacial properties. Compared with the untreated composites, the interfacial shear strength (IFSS) and interlaminar shear strength (ILSS) increased by 71.20% and 39.16%, respectively. The biomimetic rhizome architecture of WPU‐M not only effectively mitigated microscopic defects on the CF surface but also amplified the density of polar functional groups, thereby strengthening the intermolecular interactions between CF and EP. This study presents a novel approach for optimizing the interfacial design of high‐performance carbon fiber composites.","PeriodicalId":510403,"journal":{"name":"Polymer Composites","volume":"47 1","pages":"862-875"},"PeriodicalIF":0.0,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Norbornenyl‐Modified Nanosilica for Reinforced Polydicyclopentadiene Composites","authors":"Nengde Liang, Jingyue Li, YingJian Chen, Miao Zhang, Bin Xie, Zelin Sun, Zhong Liu, Qiwei Wang, Wai‐Yeung Wong","doi":"10.1002/pc.70177","DOIUrl":"https://doi.org/10.1002/pc.70177","url":null,"abstract":"ABSTRACT Polydicyclopentadiene (PDCPD) is a type of rigid thermosetting engineering plastic that is polymerized from dicyclopentadiene (DCPD). In industry, it is often combined with various organic or inorganic fillers to produce composites. However, because DCPD is nonpolar, surface modification of the fillers is necessary to enhance composite performance. This study designed and synthesized four readily available norbornenyl‐based silane coupling agents based on nadic anhydride and isocyanate siloxane to modify nanosilica. The modified nanosilicas were then stably dispersed in DCPD to prepare a series of norbornenyl‐based nanosilica/PDCPD composites. The results showed that the nanosilica modified with additional phenyl groups can lead to better composite performance. The impact toughness of the composites can be increased by 100%, and the tensile and flexural strengths can be improved by approximately 10%. Moreover, these norbornenyl‐based nanosilica/PDCPD composites demonstrated good thermal stability, with higher glass transition temperature ( T g ) and maximum decomposition temperature ( T dmax ) values.","PeriodicalId":510403,"journal":{"name":"Polymer Composites","volume":"47 1","pages":"710-719"},"PeriodicalIF":0.0,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147900464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing the Interfacial Properties of Carbon Fiber/Epoxy Resin Composites by Constructing a Rigid–Flexible Structure of Carbon Nanotubes and Polyether Amine Onto Carbon Fibers","authors":"Lianru Ma, Wei Wang, Qian Zhang, Yongrui He","doi":"10.1002/pc.70167","DOIUrl":"https://doi.org/10.1002/pc.70167","url":null,"abstract":"ABSTRACT To enhance the interfacial properties of carbon fiber reinforced polymer (CFRP) composites, a rigid–flexible interfacial structure was constructed by in situ growth of carbon nanotubes (CNTs) on the carbon fiber surface via chemical vapor deposition (CVD), followed by grafting polyether amines (PEA) with different molecular weights. The CNTs provided a rigid, high‐modulus structure enhancing mechanical interlocking and surface area, while PEA introduced a flexible, tough segment capable of forming chemical bonds with the epoxy matrix. The synergistic effect of the CNTs and PEA significantly improved interfacial adhesion and stress transfer efficiency. Interlaminar shear strength (ILSS) and interfacial shear strength (IFSS) of the composites were increased by 44.3% and 51.4%, respectively, compared with untreated CF composites. Furthermore, the optimal molecular weight of PEA was identified, balancing the rigid reinforcement and flexible energy dissipation. This work provides a promising strategy for tailoring interfacial architecture in CFRP composites and offers insights into the design of advanced structural materials with high strength and toughness.","PeriodicalId":510403,"journal":{"name":"Polymer Composites","volume":"47 1","pages":"568-578"},"PeriodicalIF":0.0,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147909349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation and Properties of Bamboo Fiber/Bamboo Powder/ <scp>PLA</scp> / <scp>PBAT</scp> Shape Memory Composites","authors":"Chunxiu Liu, Chunhui Zhang, Jianhong Liu, C.D. Li, Huikai Nan, Ziyue Zhang, Yubing Dong","doi":"10.1002/pc.70184","DOIUrl":"https://doi.org/10.1002/pc.70184","url":null,"abstract":"ABSTRACT To improve the mechanical property of poly (butylene adipate‐co‐terephthalate) (PBAT), the bamboo powder/polylactic acid (PLA)/PBAT (BPP) composites were prepared by melt‐blending, and the NaOH solutions treated bamboo fiber (BF)/BPP composites were prepared by a hot‐pressing molding approach. The effects of BF on the structure and properties of the BF/BPP composites were studied. The results showed that the BF mat significantly improved the mechanical properties of the composites, especially those reinforced with a double‐outer‐layer BF mat. The tensile strength and Young's modulus of the 4 wt% NaOH solution pretreated‐BF reinforced BPP composites were 19.0 and 257.9 MPa, respectively. In addition, the BF/BPP composites had good shape memory properties, with shape memory fixity ratio ( R f ) and shape memory recovery ratio ( R r ) reaching 97.8% and 82.2% under 120°C, respectively. The R r of the composites gradually increased with the concentration of NaOH solutions. This study may provide a feasible reference for the research and application of the PBAT‐based biodegradable composites modified with natural reinforcing materials.","PeriodicalId":510403,"journal":{"name":"Polymer Composites","volume":"47 1","pages":"803-820"},"PeriodicalIF":0.0,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/pc.70184","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147893397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Green Functionalization of <scp> CaCO ₃ </scp> via Biobased Modifiers: A Sustainable Strategy to Enhance Interfacial and Mechanical Behaviors in Bamboo‐Plastic Composites","authors":"Zhenxin Zhang, Tianrong Zhan, Jinyuan Ren, Yao Peng, Jinzhen Cao","doi":"10.1002/pc.70171","DOIUrl":"https://doi.org/10.1002/pc.70171","url":null,"abstract":"ABSTRACT Bamboo‐plastic composites (BPCs) are recognized as a sustainable material that aligns with the “double carbon” strategy, demonstrating considerable potential for application in both packaging and construction industries. However, the inadequate interfacial compatibility between bamboo fibers (BFs) and the polymer matrix substantially undermines the mechanical properties of BPCs. Although the incorporation of cost‐effective and widely available inorganic CaCO 3 can improve certain properties, its high surface polarity results in poor dispersion within the BFs‐polymer composite system, thus limiting its efficacy as a reinforcing agent. To address these challenges, this study introduced environmentally friendly modifiers through the synergistic combination of KH‐570/DL‐malic acid (DL) and sodium citrate (SC)/DL for the surface functionalization of CaCO 3 . This innovative strategy effectively transformed CaCO 3 from a conventional “inorganic filler” into an active “interfacial compatibilizer” which was processed via melt‐blending with BFs and the polypropylene (PP) matrix to optimize interfacial compatibility. The results demonstrated that at a modifier dosage equivalent to 5% of the mass of CaCO 3 , with optimal KH:DL and SC:DL ratios of 5:5 and 4:6, the KH/DL‐C10F40 and SC/DL‐C10F40 groups demonstrated enhanced mechanical properties and processability compared to C10F40. Specifically, there were observed improvements in tensile strength by 20.67% and 20.01%, flexural strength by 6.94% and 4.43%, impact strength by 19.60% and 27.42%, and melt flow index by 143.79% and 124.85%, respectively. Furthermore, the composites exhibited significant improvements in dimensional stability, photostability, and thermal stability. This study established a novel strategy utilizing modified CaCO 3 to produce BPCs with excellent mechanical properties and processability, which possessed substantial scientific and practical significance.","PeriodicalId":510403,"journal":{"name":"Polymer Composites","volume":"47 1","pages":"632-645"},"PeriodicalIF":0.0,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/pc.70171","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147331110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}