Polymer最新文献 - Book学术

Transparency reprocessable shape-memory polyurethane elastomers with intrinsic flame retardancy 具有内在阻燃性的透明可再加工形状记忆聚氨酯弹性体

IF 4.6 2区化学

Polymer Pub Date : 2026-09-02 DOI: 10.1016/j.polymer.2026.130761

Chenyang Qiu, Wenqing Yang, Shumin Gao, Jinwang Gao, Binhe Song, Mingtao Run, Li Huo

{"title":"Transparency reprocessable shape-memory polyurethane elastomers with intrinsic flame retardancy","authors":"Chenyang Qiu, Wenqing Yang, Shumin Gao, Jinwang Gao, Binhe Song, Mingtao Run, Li Huo","doi":"10.1016/j.polymer.2026.130761","DOIUrl":"https://doi.org/10.1016/j.polymer.2026.130761","url":null,"abstract":"Intrinsically flame-retardant polyurethane elastomers balancing mechanics, recyclability, shape-memory and transparency remain a tough challenge. Herein, phosphorus-boron synergistic P-BPU elastomers are fabricated via prepolymerization using rigid10-(2,5-dihydroxyphenyl)-10-hydrogen-9-oxa-10-phospha-phenantbrene-10-oxide (DOPO-HQ) as functional chain extender and boric acid (H<ce:inf loc=\"post\">3</ce:inf>BO<ce:inf loc=\"post\">3</ce:inf>) as dynamic cross-linker. Optimized P-BPU-2 achieves a UL-94 V-0 rating, with total heat release, peak heat-release rate and total smoke production reduced by 26.47%, 49.49% and 20.65% versus BPU via gas-phase radical quenching and condensed-phase BPO<ce:inf loc=\"post\">4</ce:inf> glassy char barrier. P-BPU-2 exhibits robust mechanical properties, achieving tensile strength 3.52 times that of pure BPU. Reversible boronic-ester bonds enable thermal recyclability and shape-memory behaviors. After remolding at 120 °C, recycled P-BPU-2 keeps 91.16% of initial elongation at break, owning 80.9% shape recovery (40 °C) and 76.36% shape fixity (−50 °C). It also maintains 57.81% transmittance at 550 nm, overcoming the trade-off among flame retardancy, mechanics properties and optical performance. This design strategy provides a pathway for developing for high-end cable-sheathing materials.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"72 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148884651","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

Phase Behavior of Linear-Branched Block Copolymers with Precisely Controlled Branch-Point Positions 分支点位置精确控制的线性支链嵌段共聚物的相行为

IF 4.6 2区化学

Polymer Pub Date : 2026-09-01 DOI: 10.1016/j.polymer.2026.130758

Tianyu Zheng, Juntong He, Zhanhui Gan, Jinbin Li, Zhuang Ma, Jiajia Zhou, Xue-Hui Dong

引用次数: 0

Interfacial interaction evolution governed by Polyimide chain length: Mechanical and Dielectric properties optimization of Cyanate Ester 聚酰亚胺链长控制的界面相互作用演化：氰酸酯的力学和介电性能优化

IF 4.6 2区化学

Polymer Pub Date : 2026-09-01 DOI: 10.1016/j.polymer.2026.130776

Guoheng Qiu,Gang Liu,Zexu He,Jianan Yao,Chunhai Chen

引用次数: 0

Hydroxypropyl-β-Cyclodextrin Modulated PEDOT:PSS via Synergistic Supramolecular Interactions toward Thermally Stable Flexible OLEDs 羟丙基-β-环糊精通过协同超分子相互作用调制PEDOT:PSS制备热稳定柔性oled

IF 4.6 2区化学

Polymer Pub Date : 2026-09-01 DOI: 10.1016/j.polymer.2026.130782

Shulei Liu,Yang Lin,Qi Zhou,Junjie Yue,Zhenjiang Wan,Tingting Zhao,Weixia Lan,Donghong Yu,Bin Wei,Wei Shi

引用次数: 0

Coarse-grained molecular dynamics modeling of nanobubble nucleation in CO2-impregnated polycarbonate co2浸渍聚碳酸酯中纳米气泡成核的粗粒分子动力学模拟

IF 4.6 2区化学

Polymer Pub Date : 2026-09-01 DOI: 10.1016/j.polymer.2026.130744

Isato Harada,Kentaro Taki,Hajime Kimizuka

引用次数: 0

Multi-Material Vat Photopolymerization Toward Integrated Functional Devices 面向集成功能器件的多材料还原光聚合

IF 4.6 2区化学

Polymer Pub Date : 2026-09-01 DOI: 10.1016/j.polymer.2026.130778

Antonio Dominguez-Alfaro

引用次数: 0

Synergistic Enhancement of Thermal Conductivity and Temperature Sensitivity in P(DMAA-co-AAM)/h-BN Ionogels for High-Performance Flexible Thermal Sensing P(DMAA-co-AAM)/h-BN离子凝胶在高性能柔性热传感中的导热性和温度敏感性协同增强

IF 4.6 2区化学

Polymer Pub Date : 2026-09-01 DOI: 10.1016/j.polymer.2026.130786

Shuai Huang,Ziqiang Xiang,Yuhao Zhu,Renfeng Gong,Yicheng Wang,Ruoyi Liu,Guanjun Liu,Qingshan Wu

引用次数: 0

Reconciling the Trade-off Between Rigidity and Dynamics in Chitosan-based Self-Healing Hydrogels via Sol-Gel Inorganic Crosslinking 通过溶胶-凝胶无机交联协调壳聚糖基自愈水凝胶的刚性和动力学之间的权衡

IF 4.6 2区化学

Polymer Pub Date : 2026-09-01 DOI: 10.1016/j.polymer.2026.130775

Kun-Hao Luo,Chen-An Chang,Sheng-Yen Hsiao,Po-Ting Lee,Yi-Ting Kao,Jolleen Natalie I. Balitaan,Shu-Rung Lin,Wen-Tyng Li,Jui-Ming Yeh

引用次数: 0

Transparent Thermoplastic Elastomers by Anionic Polymerization based on a Soft Polymethacrylate-Segment and Coupling Strategies 基于软聚甲基丙烯酸酯段和偶联策略的阴离子聚合透明热塑性弹性体

IF 4.6 2区化学

Polymer Pub Date : 2026-09-01 DOI: 10.1016/j.polymer.2026.130760

Kinza Y. Ghulam,Frank Hartmann,Bart-Jan Niebuur,Tobias Kraus,Marcus Koch,Michiel Verswyvel,Norbert Niessner,Jenoff E. De Vrieze,Markus Gallei

引用次数: 0

Over-sulfation of polysaccharides derived from Porphyridium cruentum: Characterization and antiviral activity against Herpes viruses 从紫卟啉提取的多糖的过硫酸化：特性和对疱疹病毒的抗病毒活性

IF 4.6 2区化学

Polymer Pub Date : 2026-09-01 DOI: 10.1016/j.polymer.2026.130755

Nof Karshan, Mahmoud Huliehel, Oshrat Levy-Ontman

{"title":"Over-sulfation of polysaccharides derived from Porphyridium cruentum: Characterization and antiviral activity against Herpes viruses","authors":"Nof Karshan, Mahmoud Huliehel, Oshrat Levy-Ontman","doi":"10.1016/j.polymer.2026.130755","DOIUrl":"https://doi.org/10.1016/j.polymer.2026.130755","url":null,"abstract":"Extracellular polysaccharides derived from the red microalga <ce:italic>Porphyridium cruentum</ce:italic> show antiviral activity against herpesviruses, but how their sulfate content influences antiviral efficacy and physicochemical properties remains unclear. Here, we increased the sulfate content of <ce:italic>P. cruentum</ce:italic>-derived polysaccharides using the sulfur trioxide–pyridine method, with or without sodium borohydride (NaBH<ce:inf loc=\"post\">4</ce:inf>) pretreatment, and assessed cytotoxicity, physicochemical changes, and antiviral activity against Herpes simplex virus type 1 (HSV-1) and Varicella-zoster virus (VZV). Sulfation for 1–3 h increased sulfate content from ∼5 wt% (native) to ∼14–23 wt% without increasing cytotoxicity in Vero cells, and NaBH<ce:inf loc=\"post\">4</ce:inf>-pretreated sulfated polysaccharides achieved up to 100% inhibition of HSV-1 at 10 μg/mL. In contrast, prolonged sulfation (7 h) with and without NaBH<ce:inf loc=\"post\">4</ce:inf> pretreatment reduced the antiviral activity of the polysaccharide relative to their native counterparts. FTIR spectroscopy and zeta potential measurements confirmed sulfate incorporation, while SEM and rheology indicated morphological and rheological changes, including markedly reduced viscosity. Together, these findings demonstrate the need to optimize sulfation conditions for enhancing the <ce:italic>in vitro</ce:italic> antiviral activity of <ce:italic>P. cruentum</ce:italic>-derived polysaccharides and provide a framework for linking physicochemical changes to antiviral function.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"1 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148884653","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