Polymer Chemistry最新文献_第7页

Preparation of a biomass-derived imine hardener, biobased epoxy thermoset and their coating on cellulose nanofiber film for high-performance and energy-harvesting applications† 生物质衍生亚胺硬化剂、生物基环氧热固性树脂的制备及其在纤维素纳米纤维薄膜上的高性能和能量收集应用

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-06-13 DOI: 10.1039/D5PY00456J

Bijender Kumar, Muhammad Latif, Samia Adil and Jaehwan Kim

{"title":"Preparation of a biomass-derived imine hardener, biobased epoxy thermoset and their coating on cellulose nanofiber film for high-performance and energy-harvesting applications†","authors":"Bijender Kumar, Muhammad Latif, Samia Adil and Jaehwan Kim","doi":"10.1039/D5PY00456J","DOIUrl":"10.1039/D5PY00456J","url":null,"abstract":"The design of biobased epoxy-cellulose nanofiber (CNF) films is highly sought after in the scientific community and industry sector due to superior comprehensive properties. Nevertheless, durable device performance is the primary challenge for CNF-based materials under humid working environments. Herein, we report (for the first time) a biomass-derived Schiff-based imine hardener for curing biobased epoxy resins, which, when applied as a coating improved the properties of cellulose nanofiber (CNF) films. The biobased epoxy-coated CNF film showed remarkable tensile strength (218.0 ± 4.2 MPa), Young's modulus (6.9 ± 0.2 GPa), thermal stability, and superior UV protection compared with those of neat CNF. Moreover, the biobased epoxy thermoset exhibited excellent chemical degradability in an acidic medium compared with that of the petroleum-based one. The biobased epoxy-coated CNF film was applied for a triboelectric nanogenerator (TENG) device. The latter exhibited a significant output power of 14.6 μW, with durability in humid conditions. We explored an effective strategy for all-biobased epoxy thermosets and their coating on CNF films but also demonstrated the potential of biobased TENG devices for energy harvesting.","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":" 26","pages":" 3079-3091"},"PeriodicalIF":4.1,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144278690","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

Mechanically robust but dynamic elastomers as functional coatings based on dynamic covalent bonds and multiple noncovalent interactions† 基于动态共价键和多种非共价键相互作用的弹性弹性体作为功能涂层

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-06-12 DOI: 10.1039/D5PY00495K

Xiao Yang, Dianteng Zhao, Yichen Huang, Xinyun Li, Bo Zheng and Lingyan Gao

{"title":"Mechanically robust but dynamic elastomers as functional coatings based on dynamic covalent bonds and multiple noncovalent interactions†","authors":"Xiao Yang, Dianteng Zhao, Yichen Huang, Xinyun Li, Bo Zheng and Lingyan Gao","doi":"10.1039/D5PY00495K","DOIUrl":"10.1039/D5PY00495K","url":null,"abstract":"Much attention has been paid to the fabrication of advanced materials to solve the global plastic pollution crisis. This study developed a sustainable coating material, Poly(TA-DES-Cu), a thioctic acid-based covalent adaptable network (CAN). The synergistic noncovalent interactions of Cu2+–carboxyl coordination and DES-involved hydrogen bonding in Poly(TA-DES-Cu) endow the elastomer with good mechanical properties (1808% fracture strain and 7.92 MJ m−3 toughness), self-healing capability (25–60 °C, >80% stress recovery after 10 cycles), interfacial adhesion (2.52 MPa on steel) and recyclability. In particular, the cooperative dynamic noncovalent interactions and molecular chain slippage enable efficient energy dissipation and puncture resistance (11.42 mJ), leading to its further application as a coating material. After coating on nonwoven fabrics, it not only enhances the mechanical performance but also leads to broad-spectrum antibacterial activity of the resulting composite material. This strategy provides a novel approach for designing sustainable intelligent polymer materials.","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":" 27","pages":" 3156-3163"},"PeriodicalIF":4.1,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144269231","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

Pd-initiated C1 polymerization of diazoacetates with hydroxy-protected sugar substituents: syntheses of a new type of protected sugar-containing C1 polymer (C1 glycopolymer)† 含羟基保护糖取代基重氮乙酸酯的pd引发C1聚合：一种新型含保护糖C1聚合物（C1糖共聚物）的合成

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-06-12 DOI: 10.1039/D5PY00374A

Hiroaki Shimomoto, Kaito Murakami, Minami Toratani, Miho Kudo, Tomomichi Itoh and Eiji Ihara

引用次数: 0

Dual-responsive amphiphilic cysteine block copolypeptide: self-assembled vesicles for dye encapsulation and photo-triggered release† 双响应两亲半胱氨酸嵌段共肽：染料封装和光触发释放的自组装囊泡

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-06-12 DOI: 10.1039/D5PY00432B

Joy Das, Priyanka Dinda, Ambuz Basak, Mahammad Anas, Sunetra Karmakar and Tarun K. Mandal

{"title":"Dual-responsive amphiphilic cysteine block copolypeptide: self-assembled vesicles for dye encapsulation and photo-triggered release†","authors":"Joy Das, Priyanka Dinda, Ambuz Basak, Mahammad Anas, Sunetra Karmakar and Tarun K. Mandal","doi":"10.1039/D5PY00432B","DOIUrl":"10.1039/D5PY00432B","url":null,"abstract":"The inherent biocompatibility and biodegradability of functionalized smart polypeptides make them attractive for biomedical applications, including drug delivery and tissue engineering. Inspired by this prospect, herein, we report a dual stimuli-responsive amphiphilic block copolypeptide, [(PCys-g-PNIPAM)-b-(PCys-NB)], which exhibits both thermo- and photo-responsiveness in aqueous media. The copolypeptide is synthesized via a multi-step reaction starting from thiol-mediated radical polymerization of N-isopropylacrylamide (NIPAM) to cysteine-terminated PNIPAM (Cys-PNIPAM) for subsequent cyclization to the corresponding N-carboxyanhydride (Cys-PNIPAM NCA). Ring-opening polymerization (ROP) of this NCA produces a PCys-g-PNIPAM block, which serves as a macroinitiator for the ROP of 2-nitrobenzyl-functionalized cysteine NCA (Cys-NB NCA), forming the targeted copolypeptide. The grafted PNIPAM segments impart tunable lower critical solution temperature (LCST)-type reversible phase behaviour in water. Upon UV irradiation (λ = 350 nm), the photocleavage of the nitrobenzyl groups transforms PCys-NB into PCys-COOH, increasing the hydrophilicity of the copolypeptide and increasing its cloud point. In aqueous solution, the copolypeptide self-assembles into vesicular nanostructures capable of encapsulating a hydrophobic dye. The UV-induced cleavage of the NB moiety disrupts the vesicular structures due to an imbalance in the hydrophilic–hydrophobic ratio of the formed copolypeptide, resulting in triggered release of the encapsulated dye. The temperature-controlled encapsulation efficiency and light-triggered release of cargo highlights the potential of this block copolypeptide as a dual-responsive carrier for smart drug delivery application.","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":" 28","pages":" 3265-3277"},"PeriodicalIF":4.1,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144269233","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

Furfural-derived 5-alkoxy-2(5H)-furanones as cationically copolymerizable cyclic hemiacetal esters† 糠醛衍生的5-烷氧基-2(5H)-呋喃酮阳离子共聚环半缩醛酯

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-06-11 DOI: 10.1039/D5PY00255A

Naoki Higashibata, Sadahito Aoshima and Arihiro Kanazawa

{"title":"Furfural-derived 5-alkoxy-2(5H)-furanones as cationically copolymerizable cyclic hemiacetal esters†","authors":"Naoki Higashibata, Sadahito Aoshima and Arihiro Kanazawa","doi":"10.1039/D5PY00255A","DOIUrl":"10.1039/D5PY00255A","url":null,"abstract":"We have focused on cyclic hemiacetal esters as monomers that undergo cationic ring-opening copolymerization. In this study, we investigated the cationic ring-opening copolymerization of 5-alkoxy-2(5H)-furanones (ROFOs), which are cyclic hemiacetal esters synthesized from a plant-derived compound (furfural) via photochemical reaction. ROFOs did not undergo cationic homopolymerization, while copolymerization with oxiranes successfully proceeded to yield polymers with ester and acetal moieties in the main chain. In addition, cationic terpolymerization of vinyl ether (VE), oxirane, and ROFO proceeded via highly selective crossover reactions, resulting in sequence-controlled terpolymers with VEn–oxiranem–ROFO-type periodic structures. The co- and terpolymers could be degraded by acid hydrolysis via the scission of the acetal moieties in the main chain. The copolymers obtained from ROFO have β-substituted acrylate structures in the main chain; hence, the polymers could be modified by the thiol–ene reaction.","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":" 27","pages":" 3119-3128"},"PeriodicalIF":4.1,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/py/d5py00255a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144260509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Harnessing enzymes for greener polymerisations: advances in chain and step growth processes 利用酶进行绿色聚合：链式和阶梯式生长过程的进展

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-06-10 DOI: 10.1039/D5PY00223K

Emily G. Dixon, Luisa Ciano, Anca Pordea, Karen Alvey and Vincenzo Taresco

{"title":"Harnessing enzymes for greener polymerisations: advances in chain and step growth processes","authors":"Emily G. Dixon, Luisa Ciano, Anca Pordea, Karen Alvey and Vincenzo Taresco","doi":"10.1039/D5PY00223K","DOIUrl":"10.1039/D5PY00223K","url":null,"abstract":"Synthetic organic polymers face increasing scrutiny due to their environmental impact, as most industrial monomers are petrol-based. Key concerns include fossil fuel consumption, greenhouse gas emissions, reliance on non-renewable feedstocks, insufficient recycling and the use of toxic and harmful catalysts. To align with the United Nations Sustainable Development Goals (SDGs) and Anastas and Warner's 12 Principles of Green Chemistry, the polymer industry must embrace a total revolution. Biocatalysis offers a promising route to achieve these goals. This review encourages the polymer community to adopt enzymatic catalysis for functional polymer synthesis, showcasing enzymes as powerful tools with green credentials that should be integrated into the field. To meet field-specific nomenclature we categorise enzymatic polymerisation based on the more general mechanisms, namely step polymerisation (SP), chain polymerisation (CP), and ring-opening polymerisation (ROP), reflecting the recent refinement of ‘step-growth’ and ‘chain-growth’ nomenclature by the IUPAC's Subcommittee on Polymer Terminology. This classification aims to engage readers with interests directed towards polymerisation processes and direct utilisation of the enzymes to specific reagents or classes of monomers. By presenting examples and using familiar mechanistic categorisations in a tutorial-style review, we aim to empower polymer chemistry researchers to embrace enzymatic catalysis as a sustainable and innovative tool. We conclude the review by highlighting recent innovative works, discussing challenges and proposing future opportunities.","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":" 26","pages":" 2997-3029"},"PeriodicalIF":4.1,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/py/d5py00223k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144252106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Synthesis of high MFI polyolefin elastomers using dibenzosuberyl iminopyridyl Ni(ii) catalysts† 用二苯并亚胺吡啶镍催化剂合成高MFI聚烯烃弹性体

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-06-10 DOI: 10.1039/D5PY00083A

Jun Gan and Shengyu Dai

{"title":"Synthesis of high MFI polyolefin elastomers using dibenzosuberyl iminopyridyl Ni(ii) catalysts†","authors":"Jun Gan and Shengyu Dai","doi":"10.1039/D5PY00083A","DOIUrl":"10.1039/D5PY00083A","url":null,"abstract":"Recently, nickel-based α-diimine catalysts have been widely used in the preparation of polyolefin elastomer materials. However, the polyolefin materials obtained from this system often exhibit high molecular weights, leading to a low melt flow index (MFI) and difficulties in film processing. Herein, we first report the synthesis and characterization of a class of nickel dibenzosuberyl iminopyridyl catalysts, featuring backbones and arylamine substituents with varying electronic effects. These catalysts demonstrate high activity (106 g mol−1 h−1) in ethylene polymerization and enable the synthesis of polyethylene elastomers with moderate molecular weights (53.8–156.9 kg mol−1) and branching densities (55–87/1000 C). The electronic properties of the catalyst backbone and the arylamine substituents have a general influence on ethylene polymerization and the properties of the resulting products. However, increasing the polymerization temperature significantly reduced the polymerization activity and altered the molecular weight and branching density of the obtained polyethylene elastomers. Mechanical property tests of these polyethylene elastomers reveal excellent elongation at break (1617%–1729%) and moderate tensile strength at break (5.46–10.58 MPa) and elastic recovery ratios (30%–45%). MFI tests, as well as transmittance and volume resistivity measurements, indicate that the obtained polyethylene elastomer materials possess high MFR (16–22 g per 10 min), high transmittance (84–89%), and high volume resistivity (151–321 × 1015 Ω m), making them suitable for use as photovoltaic encapsulant films.","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":" 27","pages":" 3172-3178"},"PeriodicalIF":4.1,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144252105","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

Oxidation of polydithioacetals towards enhanced interchain interactions and oxidative stability† 聚二硫缩醛的氧化增强了链间相互作用和氧化稳定性

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-06-09 DOI: 10.1039/D5PY00359H

Jingman Xie, Kangle Yan, Hailong Wang, Shuo Geng, Yan Gao, Wangmao Tian, Chengcheng Hu and Liang Yuan

引用次数: 0

Synthesis of poly(3-keto-d-glucal) via conjugate addition polymerization† 共轭加成聚合法制备聚3-酮- d -葡聚糖

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-06-06 DOI: 10.1039/D5PY00444F

Mudassir M. Syed, Madelyn K. Funke, Logan P. Blackham and Samantha L. Kristufek

{"title":"Synthesis of poly(3-keto-d-glucal) via conjugate addition polymerization†","authors":"Mudassir M. Syed, Madelyn K. Funke, Logan P. Blackham and Samantha L. Kristufek","doi":"10.1039/D5PY00444F","DOIUrl":"10.1039/D5PY00444F","url":null,"abstract":"The widespread environmental impact of petrochemical-derived plastics has spurred interest in renewable alternatives. Herein, we report the design, synthesis, and polymerization of a novel sugar-derived monomer, dimethyl acetal-3-keto-D-glucal, using conjugate addition polymerization (CAP) to yield poly(3-keto-D-glucal) after post-polymerization deprotection. The monomer, synthesized in two steps from D-glucal, features an α,β-unsaturated enone motif compatible with CAP. Systematic optimization of reaction parameters—including solvent, catalyst, temperature, concentration, and time—revealed that acetonitrile as the solvent and 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) as the catalyst yielded polymers with molecular weights up to 1080 kDa and dispersities as low as 1.54. Post-polymerization deprotection under mild conditions afforded hydroxyl-functionalized polymers with enhanced thermal stability and water solubility. The glass transition temperatures were determined to be 41 °C and 60 °C for the hydrophobic and hydrophilic polymers, respectively. These findings establish glycals as promising renewable monomers and highlight conjugate addition polymerization as a versatile method for synthesizing high-performance sugar-based polymers, contributing to the growing field of sustainable materials.","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":" 26","pages":" 3051-3058"},"PeriodicalIF":4.1,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144237244","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

Design and synthesis of thermoresponsive degradable copolymers: integrating hydroxy-functional vinyl ethers with cyclic ketene acetals† 热响应性可降解共聚物的设计与合成：羟基功能化乙烯基醚与环烯酮缩醛的整合

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2025-06-05 DOI: 10.1039/D5PY00398A

Shinji Sugihara, Atsushi Endo, Komal Raje, Atsushi Matsumoto, Satoshi Fujita and Yasushi Maeda

{"title":"Design and synthesis of thermoresponsive degradable copolymers: integrating hydroxy-functional vinyl ethers with cyclic ketene acetals†","authors":"Shinji Sugihara, Atsushi Endo, Komal Raje, Atsushi Matsumoto, Satoshi Fujita and Yasushi Maeda","doi":"10.1039/D5PY00398A","DOIUrl":"10.1039/D5PY00398A","url":null,"abstract":"Degradable copolymers with adjustable thermoresponsive characteristics are synthesized through radical copolymerization of hydroxy-functional vinyl ethers (OH-VEs), such as 2-hydroxyethyl vinyl ether (HEVE) or di(ethylene glycol) vinyl ether (DEGV), with 2-methylene-1,3-dioxepane (MDO). Mechanistic investigations, including reactivity ratio determination and 1H NMR spectroscopy, reveal that hydrogen bonding from the hydroxy groups in vinyl ethers affects both radical vinyl polymerization of OH-VEs and radical ring-opening polymerization of MDO. The resulting poly(HEVE-co-MDO) and poly(DEGV-co-MDO) copolymers exhibit LCST-type thermoresponsive behavior in aqueous solutions within specific MDO composition ranges (23–28 mol% and 35–37 mol%, respectively), whereas poly(vinyl alcohol-co-MDO) without oxyethylene moieties remains either fully soluble or insoluble, irrespective of temperature. Poly(DEGV-co-MDO) uniquely forms coacervates in turbid solutions due to its enhanced hydrophilicity, a phenomenon not observed with poly(HEVE-co-MDO). RAFT polymerization facilitates molar mass control, demonstrating an inverse relationship between molar mass and cloud point temperature. The copolymers exhibit selective degradability of MDO units under alkaline conditions and are expected to demonstrate good biocompatibility, as suggested by cytotoxicity assays.","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":" 26","pages":" 3059-3069"},"PeriodicalIF":4.1,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144219353","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