Polymer最新文献_第10页

Microwave-assisted synthesis of Poly(glycerol sebacate): Temperature-Controlled approaches for enhanced properties 微波辅助合成聚癸二酸甘油：提高性能的温控方法

IF 4.1 2区化学

Polymer Pub Date : 2025-07-07 DOI: 10.1016/j.polymer.2025.128779

Vinicius de Oliveira, Mirella Akemi Yamada Iglesias, Paula Bertolino Sanvezzo, Marcia Cristina Branciforti

{"title":"Microwave-assisted synthesis of Poly(glycerol sebacate): Temperature-Controlled approaches for enhanced properties","authors":"Vinicius de Oliveira, Mirella Akemi Yamada Iglesias, Paula Bertolino Sanvezzo, Marcia Cristina Branciforti","doi":"10.1016/j.polymer.2025.128779","DOIUrl":"10.1016/j.polymer.2025.128779","url":null,"abstract":"<div><div>Poly(glycerol sebacate) (PGS) is a biocompatible, bioresorbable, and biodegradable elastomer obtained through a two-step process: pre-polymer synthesis and crosslinking. However, its conventional synthesis requires prolonged heating under an inert atmosphere, making it time-consuming and energy-intensive. Although synthesizing PGS pre-polymers in a domestic microwave oven offers a low-cost alternative that simplifies the production of this biomaterial, previous studies have reported that the resulting polymers exhibit poor properties. This study investigates the influence of the temperature reached by the mixture during microwave-assisted synthesis on obtaining a pre-polymer with enhanced properties. Two synthesis approaches were investigated: one that limits the maximum reaction temperature to 120 °C (S1) and another that allows temperatures up to 170 °C (S2). The thermal, physical, and chemical properties of pre-polymers and elastomers were compared using differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), titration, and swelling tests. The results showed that limiting the reaction temperature to 120 °C significantly reduced glycerol volatilization, resulting in a pre-polymer with a higher degree of esterification. Although the swelling percentage indicated a lower crosslinking density in S1-derived elastomer, no excessive glycerol loss was observed. Based on these results, a PGS pre-polymer with preserved chemical characteristics can be synthesized using a domestic microwave, yielding elastomers with notable properties, offering a more efficient and cost-effective alternative to conventional methods.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"334 ","pages":"Article 128779"},"PeriodicalIF":4.1,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144568966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 and deodorizing PET fabrics with enhanced hydrophilicity, moisture permeability, tensile strength and washing durability 抗菌和除臭聚酯织物，增强亲水性，透湿性，拉伸强度和洗涤耐久性

IF 4.1 2区化学

Polymer Pub Date : 2025-07-06 DOI: 10.1016/j.polymer.2025.128776

Simeng Gao , Mengcheng Zhu , Jianyong Yu , Xueli Wang , Ruchao Yuan

{"title":"Antibacterial and deodorizing PET fabrics with enhanced hydrophilicity, moisture permeability, tensile strength and washing durability","authors":"Simeng Gao , Mengcheng Zhu , Jianyong Yu , Xueli Wang , Ruchao Yuan","doi":"10.1016/j.polymer.2025.128776","DOIUrl":"10.1016/j.polymer.2025.128776","url":null,"abstract":"<div><div>Antibacterial and deodorizing garments are essential for ensuring human health. However, achieving durable antibacterial and deodorizing properties in polyester (PET) fabrics remains a significant challenge, as such treatments often compromise moisture permeability and must withstand repeated washing cycles. In this study, these challenges were well addressed through the synthesis of a multifunctional agent, PHMG-<em>β</em>-CD/TP, a host-guest inclusion complex with <em>β</em>-cyclodextrin (<em>β</em>-CD) as the host and tea polyphenols (TP) as the guest. By grafting 5 % o.w.f. of PHMG-<em>β</em>-CD/TP onto PET fabrics, the resulting functional fabrics, PET-5 %, demonstrated outstanding antibacterial rates of 99.99 % against <em>E. coli</em> and <em>S. aureus</em> after 30 washing cycles and a deodorization rate of 99.69 %. Moreover, compared to untreated PET fabrics, PET-5 % retained its moisture permeability and breaking strength while exhibiting significantly enhanced hydrophilicity. This study provides an effective strategy for developing multifunctional antibacterial and deodorizing PET fabrics, paving the way for applications in high-performance garments and other textile products.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"335 ","pages":"Article 128776"},"PeriodicalIF":4.1,"publicationDate":"2025-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144566403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

HIPE-templated cellulose-based porous IPN scaffold for efficient copper ion removal from wastewater hipe模板纤维素基多孔IPN支架用于废水中铜离子的高效去除

IF 4.1 2区化学

Polymer Pub Date : 2025-07-05 DOI: 10.1016/j.polymer.2025.128775

Advitiya Kumar, Bhupendra Singh Butola, Bhanu Nandan, Rajiv K. Srivastava

{"title":"HIPE-templated cellulose-based porous IPN scaffold for efficient copper ion removal from wastewater","authors":"Advitiya Kumar, Bhupendra Singh Butola, Bhanu Nandan, Rajiv K. Srivastava","doi":"10.1016/j.polymer.2025.128775","DOIUrl":"10.1016/j.polymer.2025.128775","url":null,"abstract":"<div><div>Industrial wastewater contaminated with heavy metals such as copper poses a significant threat to environmental and public health, necessitating the development of efficient and sustainable remediation strategies. In this study, a novel cellulose-based high internal phase emulsion interpenetrating polymer network (HIPE-IPN) was synthesized by polymerizing acrylic acid within a wood-pulp cellulose matrix to replicate the hierarchical porosity of natural adsorbents. This innovative approach integrates the structural robustness of cellulose with the functional tunability of synthetic polymers, resulting in a porous scaffold with enhanced sorption characteristics. Batch adsorption experiments were conducted to optimize key process variables, revealing that the maximum adsorption of Cu<sup>2+</sup> occurred at an adsorbent dosage of 2 g/L, pH 5, initial Cu<sup>2+</sup> concentration of 500 mg/L, and a contact time of 90 min. Under these conditions, the HIPE-IPN exhibited a significantly improved sorption capacity (<em>q</em><sub>max</sub>) of 139.8 ± 7.5 mg/g, surpassing both pre-treated wood-pulp cellulose (60.5 ± 3.3 mg/g) and bulk IPN (113.8 ± 6.1 mg/g). Kinetic modelling indicated that the adsorption process followed a pseudo-second-order model (R<sup>2</sup> > 0.99), while equilibrium data fitted the Langmuir isotherm model (R<sup>2</sup> > 0.98), with a maximum Langmuir adsorption capacity of 270.3 mg/g. The study highlights the novelty of utilizing a bio-derived HIPE-IPN framework for efficient copper ion removal, demonstrating a substantial improvement in adsorption performance over conventional methods. These findings suggest that the developed HIPE-IPN scaffold holds considerable promise for industrial wastewater treatment applications, offering an eco-friendly, scalable, and cost-effective solution for heavy metal remediation and resource recovery.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"335 ","pages":"Article 128775"},"PeriodicalIF":4.1,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144566405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Bio-based polymer composites via pickering Emulsions: Xanthated cellulose nanofibers as a dual-function intermediate 通过Pickering乳剂的生物基聚合物复合材料：黄原纤维素纳米纤维作为双功能中间体

IF 4.1 2区化学

Polymer Pub Date : 2025-07-05 DOI: 10.1016/j.polymer.2025.128773

Kem Monterico Taghap , Yuki Yamada , Kenta Kobayashi , Toshiyuki Takano , Yoshikuni Teramoto

{"title":"Bio-based polymer composites via pickering Emulsions: Xanthated cellulose nanofibers as a dual-function intermediate","authors":"Kem Monterico Taghap , Yuki Yamada , Kenta Kobayashi , Toshiyuki Takano , Yoshikuni Teramoto","doi":"10.1016/j.polymer.2025.128773","DOIUrl":"10.1016/j.polymer.2025.128773","url":null,"abstract":"<div><div>The uniform dispersion of nanocellulose in polymer matrices remains a challenge in polymer composite fabrication. In this study, we develop a bio-based, surfactant-free approach to prepare polymer composites using xanthated cellulose nanofibers (XCNF) as a dual-function intermediate. XCNF, derived from a modified viscose rayon process, serves as both an emulsion stabilizer and a precursor to regenerated cellulose nanofibers (RXCNF). By stabilizing oil-in-water (O/W) Pickering emulsions containing poly(lactic acid) (PLA) solution, XCNF enables the formation of PLA microsphere latex structures (∼640 nm diameter) upon drying, ensuring intimate proximity between nanofibers and polymer particles. Energy-dispersive X-ray spectroscopy (EDX) confirmed the spontaneous conversion of XCNF into RXCNF, allowing in-situ formation of a reinforcing nanofiber network without additional chemical modifications. The resulting microsphere latex was used as a masterbatch for melt-mixing with PLA to fabricate PLA/RXCNF composites. Differential scanning calorimetry (DSC) revealed enhanced crystallization, while dynamic mechanical analysis (DMA) confirmed a significant increase in storage modulus, particularly beyond the glass transition temperature, demonstrating the reinforcing effect of RXCNF. Additionally, light transmittance measurements showed a progressive reduction in transparency with increasing RXCNF content due to nanofiber-induced light scattering. This approach leverages XCNF as a functional intermediate, providing a scalable and environmentally friendly strategy for bio-based polymer composites with improved performance. With the increasing industrial interest in RXCNF due to its stability and reinforcing potential, this method aligns well with ongoing efforts to commercialize cellulose-based nanomaterials.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"335 ","pages":"Article 128773"},"PeriodicalIF":4.1,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144566409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Experiments and finite element simulations pertinent to hydrogel debonding from a solid substrate 有关水凝胶从固体基材剥离的实验和有限元模拟

IF 4.1 2区化学

Polymer Pub Date : 2025-07-05 DOI: 10.1016/j.polymer.2025.128702

M. Carme Calderer , Duvan Henao , Manuel A. Sánchez , Ronald A. Siegel , Sichen Song

引用次数: 0

Thermoplastic polyimide with high glass transition temperature enabled by N-butyl-N-phenylaniline groups 用n -丁基- n -苯基苯胺基实现高玻璃化转变温度的热塑性聚酰亚胺

IF 4.1 2区化学

Polymer Pub Date : 2025-07-05 DOI: 10.1016/j.polymer.2025.128769

Weipeng Chen , Heng Liu , Huishan Hu , Tianlong Du , Tingting Cui , Wanyi Tan , Yonggang Min , Yidong Liu

{"title":"Thermoplastic polyimide with high glass transition temperature enabled by N-butyl-N-phenylaniline groups","authors":"Weipeng Chen , Heng Liu , Huishan Hu , Tianlong Du , Tingting Cui , Wanyi Tan , Yonggang Min , Yidong Liu","doi":"10.1016/j.polymer.2025.128769","DOIUrl":"10.1016/j.polymer.2025.128769","url":null,"abstract":"<div><div>Thermoplastic polyimides (TPIs) exhibit favorable processing capabilities, and meanwhile preserve most of the superior properties of PIs, such as excellent heat resistance, insulation performance, chemical stability and so on. TPI can be obtained by incorporating flexible linkages and side groups. However, it would lead to either flexible polymer chains or weakened intermolecular interaction, causing the decline in thermal stability. Herein, we develop TPIs with good thermal stability through the introduction of an <em>N</em>-butyl-<em>N</em>-phenylaniline group. Its flexible linkage -N- and the twisted structure are conducive to achieving flexible polymer chains and increasing free volume, respectively, leading to good thermoplasticity. Simultaneously, the <em>N</em>-butyl-<em>N</em>-phenylaniline group, as electron-rich aromatic moiety in the diamine monomer, is able to maintain strong charge transfer complex (CTC) effect, beneficial for preserving high thermal stability. As a result, the as-prepared TPI exhibits good thermoplasticity as well as a high <em>T</em><sub>g</sub> of 357 °C.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"335 ","pages":"Article 128769"},"PeriodicalIF":4.1,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144566410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

The molecular lubricating mechanism of subcritical water on disentanglement of UHMWPE under volumetric elongational flow field 亚临界水在体积拉伸流场下对超高分子量聚乙烯解缠的分子润滑机理

IF 4.1 2区化学

Polymer Pub Date : 2025-07-05 DOI: 10.1016/j.polymer.2025.128774

Kang-wei Xia, Jin Wang, Zhao-xia Huang, Ying-pei Zhang, Huanhuan Zhang, Haowei Jiang, Jin-Ping Qu

{"title":"The molecular lubricating mechanism of subcritical water on disentanglement of UHMWPE under volumetric elongational flow field","authors":"Kang-wei Xia, Jin Wang, Zhao-xia Huang, Ying-pei Zhang, Huanhuan Zhang, Haowei Jiang, Jin-Ping Qu","doi":"10.1016/j.polymer.2025.128774","DOIUrl":"10.1016/j.polymer.2025.128774","url":null,"abstract":"<div><div>The effective disentanglement of ultrahigh molecular weight polyethylene (UHMWPE) has sparked extensive investigations, primarily focused on the role of compatible low molecular-weight polymers or organic solvents in modulating UHMWPE chain dynamics. While subcritical water has been demonstrated to readily penetrate polar polymers to enhance segmental mobility and chain relaxation, its application in incompatible polyolefin systems remains largely unexplored. This knowledge gap motivates our exploration of subcritical water's impact on chain dynamics in non-polar UHMWPE. Herein, this work introduces subcritical water molecules during processing neat UHMWPE under a volumetric elongational flow field (VEFF). It is found that subcritical water can efficiently infiltrate into UHMWPE molecular network and gradually weaken the interchain steric hindrance under VEFF. Then, it forms an intermolecular lubricating layer to enhance interchain space and promote segment motion of UHMWPE, which results in an enhanced orientation and crystallinity. Consequently, it induces conformational transitions of UHMWPE from GG to GTG. Compared with pristine UHMWPE, the tensile strength and elongation at break of those lubricated by water exhibited maximum enhancements over 40 % and by 70 %, respectively. Therefore, this work has not only revealed the lubricating mechanism of subcritical water on promoting UHMWPE disentanglement, but also pioneers a novel strategy for tailoring chain entanglement in inherently incompatible polymer systems.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"335 ","pages":"Article 128774"},"PeriodicalIF":4.1,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144566412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Toughening epoxy resins: Recent advances in network architectures and rheological behavior 增韧环氧树脂：网络结构和流变行为的最新进展

IF 4.1 2区化学

Polymer Pub Date : 2025-07-05 DOI: 10.1016/j.polymer.2025.128770

Xia Chen , Rongcao Yu , Xin Yuan , Xueming Wang

{"title":"Toughening epoxy resins: Recent advances in network architectures and rheological behavior","authors":"Xia Chen , Rongcao Yu , Xin Yuan , Xueming Wang","doi":"10.1016/j.polymer.2025.128770","DOIUrl":"10.1016/j.polymer.2025.128770","url":null,"abstract":"<div><div>Epoxy resins are extensively employed in aerospace, electronic encapsulation, and high‐performance composites owing to their exceptional mechanical strength, chemical resistance, and interfacial adhesion. However, the high crosslink density of cured networks inherently imparts brittleness, limiting their service performance under impact loading and extreme environments. To achieve a synergistic enhancement of strength and toughness, recent efforts have focused on engineering multiscale toughening networks and leveraging rheological techniques to elucidate their structural evolution. In this review, we systematically examine epoxy resin toughening strategies by categorizing network architectures into heterogeneous systems (including rubbers, thermoplastics, core–shell polymers, and nanofillers) and homogeneous systems (hyperbranched polymers and bio-based materials), detailing their toughening mechanisms and fabrication approaches. We further discuss particle dispersion control methods and their influence on interfacial interactions and macroscopic mechanical behavior. Through both linear and nonlinear rheological characterization, we reveal the viscoelastic response and network development processes during curing. Synergistic toughening mechanisms such as interpenetrating dual networks and phase-separated morphologies are analyzed to highlight their intrinsic structure–property correlations. Finally, we identify current challenges in dispersion stability, sustainable synthesis, and structure–property modeling, and we outline prospective directions including multiscale in situ characterization and machine-learning-assisted formulation design. This comprehensive review aims to provide theoretical foundations and practical insights for the rational design and application of high-performance, eco-friendly, multifunctional epoxy resin systems.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"334 ","pages":"Article 128770"},"PeriodicalIF":4.1,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144566407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Barrier, thermal, and mechanical properties of polyglycolic acid/polyethylene terephthalate (PET) and liquid crystalline polymer/PET blend films 聚乙二醇酸/聚对苯二甲酸乙二醇酯（PET）和液晶聚合物/PET共混薄膜的阻隔、热学和机械性能

IF 4.1 2区化学

Polymer Pub Date : 2025-07-04 DOI: 10.1016/j.polymer.2025.128761

Rishabh Tiwari , Mohamed A. Abdelwahab , Muhammad Rabnawaz

{"title":"Barrier, thermal, and mechanical properties of polyglycolic acid/polyethylene terephthalate (PET) and liquid crystalline polymer/PET blend films","authors":"Rishabh Tiwari , Mohamed A. Abdelwahab , Muhammad Rabnawaz","doi":"10.1016/j.polymer.2025.128761","DOIUrl":"10.1016/j.polymer.2025.128761","url":null,"abstract":"<div><div>This study reports the effects of blends of liquid crystal polymer (LCP) and polyglycolic acid (PGA) on the barrier, thermal, and mechanical properties of polyethylene terephthalate (PET). The blends, along with their controls, were prepared using a melt-blending technique with a micro-compounder. Joncryl ADR was used as a compatibilizer to enhance interfacial adhesion and miscibility in PET/LCP and PET/PGA blends. Scanning electron microscopy analysis revealed improved interfacial adhesion of the PET/LCP and PET/PGA blends upon incorporating 1 phr Joncryl ADR. Oxygen barrier properties for PET/20 % LCP and PET/20 % PGA blends were enhanced by 41 and 62 %, respectively, compared to neat PET film. The water vapor barrier improved by 15 and 41 % for PET/20 % LCP and PET/20 % PGA blends, respectively. Mechanical performance analysis showed enhancements in tensile strength and modulus for both PET blends, with PET/20 % PGA blend outperforming PET/20 % LCP in tensile strength (42 % increase) and modulus (22.4 % increase). All-polyester composition of these new PET blends promises enhanced barrier properties while remaining both chemically and mechanically recyclable.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"335 ","pages":"Article 128761"},"PeriodicalIF":4.1,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144566429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Aging behavior, mechanism and lifetime prediction of liquid crystal polymer films under thermal and oxidative conditions for 5G communication applications 5G通信中热氧化条件下液晶聚合物薄膜的老化行为、机理及寿命预测

IF 4.1 2区化学

Polymer Pub Date : 2025-07-04 DOI: 10.1016/j.polymer.2025.128772

Peijiang Liu , Yanhuang Tang , Xingxing Li , Yingjie Zhang , Fangzhou Chen , Xiaofeng Yang , Huanxiang Xu , Dahang Tang , Bingxu Ma , Wanchun Tian , Jianping Peng , Zhenkai Huang

{"title":"Aging behavior, mechanism and lifetime prediction of liquid crystal polymer films under thermal and oxidative conditions for 5G communication applications","authors":"Peijiang Liu , Yanhuang Tang , Xingxing Li , Yingjie Zhang , Fangzhou Chen , Xiaofeng Yang , Huanxiang Xu , Dahang Tang , Bingxu Ma , Wanchun Tian , Jianping Peng , Zhenkai Huang","doi":"10.1016/j.polymer.2025.128772","DOIUrl":"10.1016/j.polymer.2025.128772","url":null,"abstract":"<div><div>Liquid crystal polymer (LCP) materials have emerged as a promising solution for 5G communication applications owing to their exceptional properties and suitability for high-frequency applications. However, the utilization of LCP materials is accompanied by challenges related to aging-induced quality, necessitating extensive research on aging mechanisms and mitigation strategies to ensure sustained reliability and performance in the face of harsh operating conditions and prolonged service life. To address this issue, LCP films were successfully prepared using the blow molding technique. Subsequently, a comprehensive investigation was conducted to explore the aging behavior, predict the lifetime, and understand the underlying aging mechanism of these films under thermal and oxidative conditions. The results indicate that the LCP film maintains a high level of functionality for up to 36 years at 100 °C, 11 years at 120 °C, and 2 years at 150 °C, based on the failure criterion of the dielectric loss factor (Df). The simultaneous occurrence of physics aging and chemical aging, including the relaxation process of main chains, thermal decomposition, Fries rearrangement reactions, and cross-linking reactions, contribute to the aging of the LCP film. Moreover, a specific fluorescence recognition strategy was used to monitor the aging state, providing a promising approach to elucidate the aging behavior of LCP films. These findings offer valuable insights into the development of flexible printed circuit (FPC) material, which are of utmost importance in realizing low-loss and high-speed 5G communication technology.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"334 ","pages":"Article 128772"},"PeriodicalIF":4.1,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144563135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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