European Polymer Journal最新文献_第3页

On the upcycling of PCL to produce building blocks for the development of PCL-PLA copolymers PCL的升级回收为PCL- pla共聚物的开发生产构件

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-03-18 Epub Date: 2026-02-06 DOI: 10.1016/j.eurpolymj.2026.114563

Giacomo Damonte, Louise Dullaert, Alessandro Pellis, Leonardo Giribaldi, Orietta Monticelli

{"title":"On the upcycling of PCL to produce building blocks for the development of PCL-PLA copolymers","authors":"Giacomo Damonte, Louise Dullaert, Alessandro Pellis, Leonardo Giribaldi, Orietta Monticelli","doi":"10.1016/j.eurpolymj.2026.114563","DOIUrl":"10.1016/j.eurpolymj.2026.114563","url":null,"abstract":"<div><div>Despite its many advantages over other bioplastics, poly(ε-caprolactone) (PCL) still faces limited applications and a lack of sustainable chemical recycling routes that could extend its life cycle, reduce its carbon footprint, and enhance its applicability. In this work, to address this gap, a novel bulk alcoholysis process was developed for upcycling PCL into functional hydroxyl-terminated oligomers using two bio-based fatty alcohols, 1-dodecanol and 1,12-dodecandiol, in the presence of zinc stearate as a catalyst. This approach enables precise control over the final properties of the resulting oligomers by varying the type and the concentration of the alcohol, yielding mono- and difunctional telechelic structures suitable for further synthesis. The prepared PCL-based oligomers were used directly, without purification, as macroinitiators for the ring-opening polymerization (ROP) of <em>L</em>-lactide to synthesize well-defined diblock (PCL-PLA) and triblock (PLA-PCL-PLA) copolymers with a PCL/PLA ratio of 1 and tailored chain lengths. These copolymers were then applied in two different scenarios. The diblock copolymers were tested as compatibilizers for PLA/PCL blends, where they enhanced the elongation at break by improving interfacial adhesion between the two polymer phases. Moreover, two telechelic systems, namely a PCL oligomer and a PLA-PCL-PLA copolymer, were used in the preparation of thermoplastic polyurethanes (TPUs) via chain-extension reactions with methylene diphenyl diisocyanate (MDI), leveraging the residual catalyst and demonstrating efficient polymerization. Overall, the developed approach provides a robust, solvent-free, scalable, and effective strategy for valorizing PCL waste, establishing a platform for producing sustainable, functional polyester-based building blocks.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"246 ","pages":"Article 114563"},"PeriodicalIF":6.3,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186816","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

Catalyst-free epoxy vitrimers from phloroglucinol and glutaric anhydride for reusable-by-design biobased glass-fiber-reinforced composites 由间苯三酚和戊二酸酐制备的无催化剂环氧玻璃体，用于设计可重复使用的生物基玻璃纤维增强复合材料

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-03-18 Epub Date: 2026-02-02 DOI: 10.1016/j.eurpolymj.2026.114559

Giulia Altamura, Stefano Turri, Gianmarco Griffini

{"title":"Catalyst-free epoxy vitrimers from phloroglucinol and glutaric anhydride for reusable-by-design biobased glass-fiber-reinforced composites","authors":"Giulia Altamura, Stefano Turri, Gianmarco Griffini","doi":"10.1016/j.eurpolymj.2026.114559","DOIUrl":"10.1016/j.eurpolymj.2026.114559","url":null,"abstract":"<div><div>Thermoset polymers are employed as matrices for fiber-reinforced composite materials due to their outstanding thermo-mechanical and chemical properties. However, the irreversible nature of their covalently crosslinked network makes conventional recycling methods unsuitable for their efficient and economically competitive reprocessing. Moreover, the most common thermoset systems typically rely on depletable and often hazardous fossil-based sources. Vitrimers have been introduced in recent years to offer potential advantages over traditional thermosets, as they can mitigate some of these issues thanks to their three-dimensional covalent network, able to undergo temperature-activated dynamic bond-exchange reactions leading to topological rearrangement. As the environmental concerns about the end-of-life of materials are paired with the need to replace fossil-based resources, research is moving towards the formulation of vitrimeric composites obtained from biobased constituents. This work employed an algae-derived epoxy resin (phloroglucinol triglycidyl ether) with glutaric anhydride to develop an easy-reprocessable, catalyst-free vitrimer for the production of glass fiber-reinforced composites. The vitrimeric behavior of these systems was assessed <em>via</em> rheological stress relaxation, which was found to be fast at moderately high temperatures (3 min at 200 °C, 100 min at 120 °C) and could be repeated multiple times due to the high chemical reversibility of the network. The resin was then employed as matrix for a thermoformable and weldable glass fiber-reinforced laminate with excellent adhesion strength (54 MPa) and easy chemical recyclability in mild conditions (150 °C, ambient pressure). Finally, the enhanced circularity of the produced composite was compared to a standard thermoset counterpart employing the Material Circularity Indicator.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"246 ","pages":"Article 114559"},"PeriodicalIF":6.3,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146122695","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

Multifunctional hydrogel integrating phototherapy and tumor microenvironment remodeling combined with immunotherapy for synergistic treatment of HCC 结合光疗、肿瘤微环境重塑和免疫治疗的多功能水凝胶协同治疗HCC

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-03-18 Epub Date: 2026-02-05 DOI: 10.1016/j.eurpolymj.2026.114568

Guolong Zhang , Wenjing Feng , Chenying Liu , Linhua Wang , Cui Cheng , Xiao Han , Wenjuan Chen

{"title":"Multifunctional hydrogel integrating phototherapy and tumor microenvironment remodeling combined with immunotherapy for synergistic treatment of HCC","authors":"Guolong Zhang , Wenjing Feng , Chenying Liu , Linhua Wang , Cui Cheng , Xiao Han , Wenjuan Chen","doi":"10.1016/j.eurpolymj.2026.114568","DOIUrl":"10.1016/j.eurpolymj.2026.114568","url":null,"abstract":"<div><div>This study develops a multifunctional hydrogel that achieves highly effective treatment of hepatocellular carcinoma (HCC) by combining phototherapy with immunotherapy and remodeling tumor microenvironment (TME). The hydrogel is prepared via dynamic Schiff base crosslinking between carboxymethyl chitosan and four-arm PEG benzaldehyde, incorporating polyvinylpyrrolidone-modified Bi<sub>2</sub>WO<sub>6-x</sub> (BWO-PVP) nanoparticles and fucoidan (Fu). <em>In vitro</em> studies demonstrate that the hydrogel exhibites good self-healing properties, injectability, and TME-responsive degradation behavior. Under 808 nm laser irradiation, it generates substantial hyperthermia and reactive oxygen species, leading to significant inhibition of HepG2 cell proliferation. Moreover, the hydrogel can release Fu to suppresse the activation of cancer-associated fibroblasts (CAFs), which contributing to TME remodeling. In H22 hepatoma-bearing mice, the hydrogel can also load the STING agonist (cyclic dinucleotide, CDN), thereby suppressing tumor growth and reversing immunosuppressive TME conditions. Hence, this combinatory strategy provides a promising platform for enhancing HCC treatment through integrated phototherapy, TME regulation and immunotherapy.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"246 ","pages":"Article 114568"},"PeriodicalIF":6.3,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186815","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

Molecular engineering of polyhydrazides: a unified framework for tunable white-light emission, thermal robustness, and high-performance dye adsorption 聚肼的分子工程：可调白光发射、热稳健性和高性能染料吸附的统一框架

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-03-18 Epub Date: 2026-02-10 DOI: 10.1016/j.eurpolymj.2026.114571

Mahmoud S. Tolba , Aya Harby , Adel M. Kamal El-Dean , Marwa M. Sayed , Osama Younis

{"title":"Molecular engineering of polyhydrazides: a unified framework for tunable white-light emission, thermal robustness, and high-performance dye adsorption","authors":"Mahmoud S. Tolba , Aya Harby , Adel M. Kamal El-Dean , Marwa M. Sayed , Osama Younis","doi":"10.1016/j.eurpolymj.2026.114571","DOIUrl":"10.1016/j.eurpolymj.2026.114571","url":null,"abstract":"<div><div>This work explores a family of four newly designed polyhydrazides obtained through polycondensation, in which two subtle yet decisive structural variables were deliberately tuned: the geometry of the phenylene linkage (<em>ortho</em> versus <em>para</em>) and the length of the aliphatic spacer (C1 versus C2). A broad suite of analytical techniques, including FT-IR, XRD, SEM, TGA, DSC, dye adsorption experiments, and photoluminescence spectroscopy, reveals that these minor architectural adjustments translate into remarkably divergent macroscopic properties. The rigid and linear <strong>Poly(C1-para)</strong> stands out for its higher thermal resistance (T<sub>d10</sub> = 256 °C), elevated char yield (33.3%), and highest methylene blue adsorption capacity (Q<sub>t</sub> = 22.7 mg/g), a performance linked to its amorphous yet densely packed framework. In contrast, the more compliant <strong>Poly(C2-ortho)</strong> forms a semi-crystalline, plate-like morphology and exhibits rapid initial dye uptake, albeit with limited retention. All polymers exhibit pronounced flame-retardant character, with Limited Oxygen Index values ranging from 27 to 31%. In addition, each material exhibits intrinsic, excitation-dependent photoluminescence, allowing for emission tuning from deep blue to near-white light. Colorimetric analysis confirms a consistent decrease in correlated color temperature with longer excitation wavelengths, an effect amplified by the flexible C2 spacer, which allows finer modulation of white-light tone. Collectively, these results demonstrate that backbone linearity and rigidity favor thermal robustness and adsorption efficiency, whereas spacer flexibility governs morphology and photophysical behavior, offering a clear design strategy for multifunctional polymeric aterials.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"246 ","pages":"Article 114571"},"PeriodicalIF":6.3,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187104","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

Multifunctional superabsorbent organogel hyperbranched copolymers via SCVP–ATRP for oil spill/wastewater remediation SCVP-ATRP用于溢油/废水修复的多功能高吸水性有机凝胶超支化共聚物

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-03-11 Epub Date: 2026-02-03 DOI: 10.1016/j.eurpolymj.2026.114521

Ahmad Shaaban, Mohamed Keshawy

{"title":"Multifunctional superabsorbent organogel hyperbranched copolymers via SCVP–ATRP for oil spill/wastewater remediation","authors":"Ahmad Shaaban, Mohamed Keshawy","doi":"10.1016/j.eurpolymj.2026.114521","DOIUrl":"10.1016/j.eurpolymj.2026.114521","url":null,"abstract":"<div><div>Oil spills and organic pollutants from accidents and industrial effluents threaten aquatic ecosystems through toxicity and bioaccumulation, requiring efficient cleanup technologies. Here, we report three <em>hyperbranched</em> organogel sorbents (OG1-OG3) synthesized by <em>one-pot</em> self-condensing vinyl polymerization (SCVP) via atom transfer radical polymerization (ATRP) of chloromethyl styrene (CMS) inimer. Copolymerization of CMS with <em>p</em>-methylstyrene (MS), poly(ethylene glycol) methacrylate (PEGMA), and sulfobetaine methacrylate (SBMA) created hydrophobic, three-dimensional porous scaffolds with high crosslink density, tunable flexibility (PEGMA), and zwitterionic antifouling functionality (SBMA). FTIR, SEM, AFM, TGA, and water contact-angle measurements confirmed the intended chemical structure, porous morphology, and surface hydrophobicity. In static oil-swelling tests with five model pollutants (xylene, chloroform, crude oil, waste motor oil, and used cooking oil), OG3 showed an exceptional capacity (<span><math><mrow><mspace></mspace><mn>90</mn><mi>g</mi><mo>/</mo><mi>g</mi></mrow></math></span> in xylene), exceeding conventional sorbents. Uptake followed a pseudo-second-order kinetic model, reaching <span><math><mrow><mspace></mspace><mn>81</mn><mo>%</mo></mrow></math></span> of equilibrium uptake within 30 min and maintaining <span><math><mrow><mspace></mspace><mn>80</mn><mo>%</mo></mrow></math></span> of their capacity over many sorption–desorption cycles. Batch sorption isotherms fit the Langmuir model well, while Freundlich analysis indicated some site heterogeneity. Overall, these organogels outperform previously reported polymer sorbents and commercial resins of similar composition, combining a facile synthesis, ultra-high capacity, fast kinetics, chemical stability, and robustness, promising features for oil spill and wastewater remediation.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"245 ","pages":"Article 114521"},"PeriodicalIF":6.3,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185365","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

Ultra-tough and sustainable epoxy adhesive enabled by microphase separation and dynamic chemical structure 微相分离和动态化学结构使环氧胶粘剂具有超强韧性和可持续性

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-03-11 Epub Date: 2026-01-25 DOI: 10.1016/j.eurpolymj.2026.114538

Nan Li , Tao Liu , Xiangrong Shi , Xiangtao Yu , Bo Jiang

{"title":"Ultra-tough and sustainable epoxy adhesive enabled by microphase separation and dynamic chemical structure","authors":"Nan Li , Tao Liu , Xiangrong Shi , Xiangtao Yu , Bo Jiang","doi":"10.1016/j.eurpolymj.2026.114538","DOIUrl":"10.1016/j.eurpolymj.2026.114538","url":null,"abstract":"<div><div>Despite significant efforts in developing high-performance epoxy adhesives, an inevitable trade-off persisted among strong adhesion, high toughness and reprocessability. Here, an epoxy adhesive with high toughness and reprocessability was developed through microphase separation and dynamic chemical structure, effectively addressing the aforementioned challenge. Specifically, the asynchronous ring-opening reactions of aromatic amines and aliphatic amines with epoxy groups resulted in the formation of a phase-separated microstructure in the cured epoxy resin, thereby endowing it with high toughness. Furthermore, the dynamic chemical structure, realized through B-N coordination and dynamic bond exchange of borate esters, enabled epoxy adhesives to have decent environmental stability and reprocessability. Therefore, the acquired epoxy adhesives exhibited superior toughness with a work of debonding of 32927.77 N/m, high adhesive strength of 24.87 MPa, decent environmental resistance (water, extreme temperatures and various solvents) and reprocessability. This strategy of incorporating microphase separation and dynamic chemical structure is expected to provide novel insights into the design of high-performance epoxy adhesives and to facilitate advancements in sustainable polymer materials.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"245 ","pages":"Article 114538"},"PeriodicalIF":6.3,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076905","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

Dynamic covalent network toughened PBAT/MMT thermoplastic nanocomposite through melt grafting and reversible boronic ester crosslinking 通过熔体接枝和可逆硼酯交联，动态共价网络增韧PBAT/MMT热塑性纳米复合材料

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-03-11 Epub Date: 2026-01-28 DOI: 10.1016/j.eurpolymj.2026.114547

Wenbin Wang , Xuefeng Li , Jiwu Qiu , Linrong Che , Wenquan Tao , Shijun Long , Dapeng Li , Yiwan Huang

{"title":"Dynamic covalent network toughened PBAT/MMT thermoplastic nanocomposite through melt grafting and reversible boronic ester crosslinking","authors":"Wenbin Wang , Xuefeng Li , Jiwu Qiu , Linrong Che , Wenquan Tao , Shijun Long , Dapeng Li , Yiwan Huang","doi":"10.1016/j.eurpolymj.2026.114547","DOIUrl":"10.1016/j.eurpolymj.2026.114547","url":null,"abstract":"<div><div>Poly(butylene adipate-co-terephthalate) (PBAT) emerges as a prominent biodegradable resin aimed at supplanting petroleum-based counterparts to address plastic waste accumulation and environmental pollution concerns. Although enhancing the mechanical and heat-resistant characteristics of PBAT through moderate crosslinking is theoretically feasible, this approach inevitably complicates melt processing due to increased viscosity. Herein, we report the successful preparation of DC<sub>z</sub>-PBAT-g-(D<sub>x</sub>-<em>co</em>-S<sub>y</sub>) by incorporating a reversible boronic ester-based dynamic covalent network (DCN) into PBAT. This was achieved through grafting dioxaborolane monomethacrylate-<em>co</em>-styrene (D<sub>x</sub>-<em>co</em>-S<sub>y</sub>) copolymers onto the PBAT backbone using dicumyl peroxide (DCP) as the initiator, followed by dynamic crosslinking of the boron-oxygen (B–O) bonds on the grafts with 1,4-phenylenediboronic acid bis(propylene glycol) ester as the dynamic crosslinker. The optimal DC<sub>0.5</sub>-PBAT-<em>g</em>-(D<sub>3</sub>-<em>co</em>-S<sub>2</sub>) exhibited high tensile strength (32.34 MPa) and Young’s modulus (58.47 MPa), representing increases of 45.9 % and 82.5 % compared to pristine PBAT, as well as excellent melt-processability. Further incorporation of long alkyl-linked dendritic montmorillonite (MMT) into DC<sub>0.5</sub>-PBAT-<em>g</em>-(D<sub>3</sub>-<em>co</em>-S<sub>2</sub>) significantly improved resistance to moisture and heat aging in the resulting DC-PBAT/MMT composite. This study introduces a novel strategy to enhance both mechanical performance and reprocessability of PBAT without compromising the processability, via a dynamic covalent network.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"245 ","pages":"Article 114547"},"PeriodicalIF":6.3,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185868","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

Proton-gated ‘ON/OFF’ antibacterial polymers: The role of tertiary amine structure and proportion in pH-dependent antibacterial activity 质子门控的“开/关”抗菌聚合物：叔胺结构和比例在ph依赖性抗菌活性中的作用

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-03-11 Epub Date: 2026-01-26 DOI: 10.1016/j.eurpolymj.2026.114543

Yufeng Zhang, Yiqun Zhang, Yini Huangfu, Shuangyang Li, Chuangnian Zhang, Pingsheng Huang, Anjie Dong, Weiwei Wang, Zujian Feng

{"title":"Proton-gated ‘ON/OFF’ antibacterial polymers: The role of tertiary amine structure and proportion in pH-dependent antibacterial activity","authors":"Yufeng Zhang, Yiqun Zhang, Yini Huangfu, Shuangyang Li, Chuangnian Zhang, Pingsheng Huang, Anjie Dong, Weiwei Wang, Zujian Feng","doi":"10.1016/j.eurpolymj.2026.114543","DOIUrl":"10.1016/j.eurpolymj.2026.114543","url":null,"abstract":"<div><div>The amphiphilic balance between cationic and hydrophobic segmentsis a critical determinant of the trade-off between antibacterial activity and biocompatibility of membranolytic polymers. In tertiary amine-based systems, this balance is dynamic and exquisitely sensitive to the pH of the tissue microenvironment. To elucidate the relationship between polymer composition and antibacterial efficacy across a physiological pH range, we developed a library of polymeric proton-gated membranolytic switches (PPGMSs) composed of butyl methacrylate and various tertiary amines. These switches achieve precise, pH-activated antibacterial activity, which is governed by the equilibrium between cationic (protonated amine) and hydrophobic butyl methacrylate and deprotonated amine domains. The switching pH of these switches increases with a higher proportion of tertiary amine or a decrease in higher amine hydrophobicity. From this library, P(E<sub>60</sub>/B) emerged as a lead compound, demonstrating potent activity againstandunder acidic conditions, and minimal cytotoxicity toward mammalian cells at neutral pH (7.4). Mechanistic studies confirmed bacterial membrane disruption as the mode of action. Crucially, P(E<sub>60</sub>/B) exhibited significant efficacy in a murine peritonitis model, reducing bacterial loads in a dose-dependent manner. This work establishes PPGMSs as a versatile platform for designing precision antimicrobials that leverage microenvironmental cues for selective therapy.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"245 ","pages":"Article 114543"},"PeriodicalIF":6.3,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076901","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

Substituted cyanoacrylate-based dynamic covalent polymers with intrinsic antioxidation and UV-shielding via cascade thiol-ene addition and Knoevenagel condensation 通过级联巯基加成和Knoevenagel缩合，取代氰基丙烯酸酯基动态共价聚合物具有固有抗氧化和紫外线屏蔽作用

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-03-11 Epub Date: 2026-01-26 DOI: 10.1016/j.eurpolymj.2026.114540

Xiaokang Tian , Dongxiao Han , Kunyan Sui , Lilong Gao

{"title":"Substituted cyanoacrylate-based dynamic covalent polymers with intrinsic antioxidation and UV-shielding via cascade thiol-ene addition and Knoevenagel condensation","authors":"Xiaokang Tian , Dongxiao Han , Kunyan Sui , Lilong Gao","doi":"10.1016/j.eurpolymj.2026.114540","DOIUrl":"10.1016/j.eurpolymj.2026.114540","url":null,"abstract":"<div><div>Ultraviolet irradiation and oxidation are the primary factors causing aging in living organisms and organic materials. This study presents a multifunctional chemical group, substituted cyanoacrylate (SCA) group, which exhibits strong ultraviolet absorption capability, excellent antioxidant property. Concurrently, SCA groups undergo C=C bond metathesis reactions under thermal activation, endowing crosslinked networks with reprocess ability. Through synthesis of small-molecule model compound, the UV-absorption and antioxidant characteristics of substituted cyanoacrylate groups were experimentally confirmed. Based on a cascade reaction combining thiol-ene addition and Knoevenagel condensation, we synthesized linear polymers with C=C bonded backbones. This polymer exists as a viscous liquid at ambient temperature (<em>M<sub>n</sub></em> = 3,700 g/mol, <em>T<sub>g</sub></em> = -19°C), functioning as a polymeric UV-absorber/antioxidant. Furthermore, dynamic covalent polymer networks (DCPNs) were prepared using the same reaction with tetrathiol monomers as cross-linkers. This SCA-based DCPN demonstrates high mechanical strength (tensile strength > 17 MPa, elongation at break > 175%), high optical transparency (>90% transmittance for red light), unique UV/oxidation resistance and reprocess ability. These properties establish the material as a sustainable protective coating suitable for demanding applications.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"245 ","pages":"Article 114540"},"PeriodicalIF":6.3,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076902","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

Nanoparticle-enhanced functional hydrogels: From design, characterization to their biomedical applications 纳米粒子增强功能水凝胶：从设计、表征到生物医学应用

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-03-11 Epub Date: 2026-01-29 DOI: 10.1016/j.eurpolymj.2026.114548

Xudong Cao , Xin Li , Tao Zhang , Baoli Zha , Sheng Li , Xikuang Yao , Fengwei Huo

引用次数: 0