European Polymer Journal最新文献_第2页

Future clinical dressings for chronic wound repair: Pioneer strategies for accelerated angiogenesis 慢性伤口修复的未来临床敷料：加速血管生成的先驱策略

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-03-18 Epub Date: 2026-02-09 DOI: 10.1016/j.eurpolymj.2026.114570

Leila Rezaei , Sherko Naseri , Vahideh Assadollahi , Shaghayegh Shojaei , Razieh Heidari , Fatemeh Elahian , Seyed Abbas Mirzaei

{"title":"Future clinical dressings for chronic wound repair: Pioneer strategies for accelerated angiogenesis","authors":"Leila Rezaei , Sherko Naseri , Vahideh Assadollahi , Shaghayegh Shojaei , Razieh Heidari , Fatemeh Elahian , Seyed Abbas Mirzaei","doi":"10.1016/j.eurpolymj.2026.114570","DOIUrl":"10.1016/j.eurpolymj.2026.114570","url":null,"abstract":"<div><div>Chronic wounds remain a significant clinical challenge due to impairments in complex biological processes, particularly angiogenesis. As a pivotal component of tissue repair, angiogenesis ensures sufficient oxygen and nutrient delivery to regenerating tissues; its disruption leads to delayed healing and increased complications. Enhancing angiogenesis through advanced wound dressings represents a promising strategy to accelerate repair and reduce the burden of chronic wounds. These engineered dressings not only provide a conducive environment for tissue regeneration but, when combined with bioactive agents, actively modulate molecular and cellular pathways involved in neovascularization. This review summarizes recent advances in polymeric dressings designed to promote angiogenesis in chronic wounds. Biopolymers such as chitosan, alginate, cellulose, chitin, and gelatin, together with synthetic polymers including polyvinyl alcohol, polylactide, poly(lactic-co-glycolic acid), polyglycolide, and polyurethane, are frequently utilized as functional matrices . These systems are often integrated with diverse therapeutic components such as growth factors, pharmaceuticals, plant-derived bioactives, genetic materials, metals, and cell-derived products like exosomes. The controlled release of these agents at the wound site mitigates inflammation and oxidative stress, modulates macrophage polarization, and activates key pro-angiogenic signaling pathways, primarily through upregulation of VEGF and activation of ERK1/2, HIF-1α, and α-SMA. Overall, the incorporation of such compounds within advanced polymeric dressings offers an innovative and multifaceted approach to stimulate angiogenesis, enhance wound healing outcomes, and improve clinical management and quality of life for patients with chronic wounds.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"246 ","pages":"Article 114570"},"PeriodicalIF":6.3,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187105","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

1-(2-ethoxyethyl) piperidine as a modifier to obtain high vinyl SSBR 以1-（2-乙氧基乙基）哌啶为改性剂制备高乙烯基SSBR

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.2026.114567

Zhixiong Yang , Haoyun Deng , Mengzhen Zhou , Encai Ou , Chao Wang , Weijian Xu

{"title":"1-(2-ethoxyethyl) piperidine as a modifier to obtain high vinyl SSBR","authors":"Zhixiong Yang , Haoyun Deng , Mengzhen Zhou , Encai Ou , Chao Wang , Weijian Xu","doi":"10.1016/j.eurpolymj.2026.114567","DOIUrl":"10.1016/j.eurpolymj.2026.114567","url":null,"abstract":"<div><div>Developing high vinyl solution styrene-butadiene rubber (SSBR) with tailored microstructures is essential for improving tire performance with rolling resistance, wet traction and wear resistance. However, most existing polar modifiers are limited in their ability to simultaneously regulate vinyl content and suppress the formation of block polystyrene (<em>b</em>-PSt). In this work, 1-(2-ethoxyethyl)piperidine (EtOEP) as a modifier, was employed to synthesize SSBR with high vinyl content and low <em>b</em>-PSt content. By tuning polymerization temperature, weight ratio of St and Bd (St/Bd), and [EtOEP]/[Li] ratio, vinyl content of SSBR (St/Bd = 3/7) was controllably increased to 72.3%, while the <em>b-</em>PSt content was only 3.3%. The obtained co-polymer exhibited a single glass transition temperature (<em>T</em><sub>g</sub> = –6.2 °C) and a high initial thermal decomposition temperature (<em>T</em><sub>d</sub> = 390 °C), indicating uniform microstructure and excellent thermal stability. Kinetic studies revealed first-order polymerization behavior, with the polymerization rate significantly enhanced as the [EtOEP]/[Li] ratio increased. Reactivity ratio analysis further confirmed a random co-polymerization tendency between St and Bd. These findings demonstrate that EtOEP enables precise control over both microstructure and polymerization process, providing a versatile approach for producing high-performance SSBR that combine high vinyl content, low <em>b-</em>PSt content, and fast polymerization rate.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"246 ","pages":"Article 114567"},"PeriodicalIF":6.3,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186813","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

Synergistic modulation of fluorine and steric effects in nickel catalysts for direct synthesis of elastic and polar-functionalized polyethylenes 直接合成弹性聚乙烯和极性功能化聚乙烯的镍催化剂中氟的协同调节和位阻效应

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-03-18 Epub Date: 2026-02-03 DOI: 10.1016/j.eurpolymj.2026.114560

Yanru Feng, Mengdi Wang, Xu Wang, Jin-Kui Liu, Huizhu Wang, Jun-Fang Gong, Hui Jiang

{"title":"Synergistic modulation of fluorine and steric effects in nickel catalysts for direct synthesis of elastic and polar-functionalized polyethylenes","authors":"Yanru Feng, Mengdi Wang, Xu Wang, Jin-Kui Liu, Huizhu Wang, Jun-Fang Gong, Hui Jiang","doi":"10.1016/j.eurpolymj.2026.114560","DOIUrl":"10.1016/j.eurpolymj.2026.114560","url":null,"abstract":"<div><div>Rational catalyst design and structural modification represent a fundamental strategy for the direct synthesis of polyethylene elastomers and polar functionalized polyethylene; however, achieving this goal remains a significant challenge. In this study, a series of unsymmetrical <em>α</em>-diimine nickel catalysts featuring <em>ortho</em>-fluorine substituents and sterically hindered dibenzhydryl groups were designed and synthesized. These catalysts exhibit excellent thermal stability and remarkable activity (up to 3.35 × 10<sup>7</sup> g·mol<sup>−1</sup>·h<sup>−1</sup>) in ethylene polymerization, even at elevated temperatures of 100 °C. By fine-tuning the fluorine substituents and steric environment, it was possible to obtain polyethylene with tunable molecular weights (up to 2.97 × 10<sup>5</sup> g·mol<sup>−1</sup>) and branching densities (68–119/1000C). Notably, the synergistic “fluorine-steric” effect in catalyst <strong>Ni4</strong> enabled the production of polyethylene elastomers with exceptional mechanical properties, including a high stress-at-break (38.5 MPa) and elastic recovery (51%). Furthermore, the fluorinated catalysts displayed unique tolerance toward polar monomers, facilitating efficient copolymerization of ethylene with various polar comonomers.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"246 ","pages":"Article 114560"},"PeriodicalIF":6.3,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186812","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

Zwitterionic Polybetaines: A versatile platform for stealth and functional drug delivery 两性离子聚甜菜碱：一种多功能的隐身和功能性药物输送平台

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-03-18 Epub Date: 2026-02-03 DOI: 10.1016/j.eurpolymj.2026.114562

Shanshan Dou , Hu Li , Meng Chen , Weiwei Li , Bindi Ying , Yujie Ma , Ran Zhang , Shuo Li , Huimin Zhang , Yanping Sun , Huijia Song , Zibin Gao

{"title":"Zwitterionic Polybetaines: A versatile platform for stealth and functional drug delivery","authors":"Shanshan Dou , Hu Li , Meng Chen , Weiwei Li , Bindi Ying , Yujie Ma , Ran Zhang , Shuo Li , Huimin Zhang , Yanping Sun , Huijia Song , Zibin Gao","doi":"10.1016/j.eurpolymj.2026.114562","DOIUrl":"10.1016/j.eurpolymj.2026.114562","url":null,"abstract":"<div><div>Polybetaines, as a class of zwitterionic polymers, are endowed with excellent protein adsorption resistance, outstanding biocompatibility, extremely low immunogenicity, and flexible stimuli-responsive behavior (e.g., to pH, temperature, ionic strength) due to their unique structure, Therefore, polybetaines demonstrate significant advantages in drug delivery systems. They can prolong the <em>in vivo</em> circulation time of drugs, enhance the accumulation at target sites, achieve intelligent responsive release, and finally improve drug efficacy and reduce side effects. This review systematically summarizes the molecular design, property regulation, and application progress of polybetaines in drug delivery. Firstly, the molecular design strategies are elaborated from two dimensions: monomer structures (carboxybetaine, sulfobetaine, phosphocholine) and polymerization methods (homopolymerization, random copolymerization, block copolymerization, graft copolymerization), thereby revealing the regulatory mechanisms underlying their anti-protein adsorption, biocompatibility, and environment-responsive behaviors. Subsequently, this review focuses on recent progress and potential of polybetaine carriers in chemotherapy drug delivery, gene delivery, and oral delivery of proteins and peptides. Finally, a brief commentary and outlook on the challenges and future developments of polybetaines are provided.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"246 ","pages":"Article 114562"},"PeriodicalIF":6.3,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187072","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

Amine and carboxylate functionalisation of silicate compounds and their effects when incorporated into alginate films 硅酸盐化合物的胺和羧酸官能化及其在海藻酸盐薄膜中的作用

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-03-18 Epub Date: 2026-02-09 DOI: 10.1016/j.eurpolymj.2026.114572

Kyle James , Nadeesha Lakmini Loku Mannage , Hao Long , Brett Williams , Ian O’Hara , Lalehvash Moghaddam

{"title":"Amine and carboxylate functionalisation of silicate compounds and their effects when incorporated into alginate films","authors":"Kyle James , Nadeesha Lakmini Loku Mannage , Hao Long , Brett Williams , Ian O’Hara , Lalehvash Moghaddam","doi":"10.1016/j.eurpolymj.2026.114572","DOIUrl":"10.1016/j.eurpolymj.2026.114572","url":null,"abstract":"<div><div>This study investigates the incorporation of amine- and carboxylate-functionalised silicates into alginate films to assess structural and functional performance. Silicates were derived from tetraethyl orthosilicate (TEOS) and sugarcane fly ash via the sol–gel process and added to alginate matrices at 5%, 10%, and 20% w/w. While the sugarcane fly ash-derived silicates had been successfully functionalised with carboxylate groups, the carboxylate functionalisation of TEOS-derived silicates was unsuccessful due to insufficient mesoporous structure. When incorporated into the alginate film matrix, the carboxylate-functionalised silicates exhibited reduced agglomeration, enabling more uniform dispersion within the alginate films. However, only TEOS-derived silicates preserved the films’ original tensile strength and elongation. These findings suggest that carboxylate functionalisation of silicates has been shown to enhance compatibility between silicate particles and alginate matrices, improving dispersion and reducing agglomeration. This approach offers potential for applications in alginate-based gels and wound dressings, particularly where controlled release and particle stability are critical.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"246 ","pages":"Article 114572"},"PeriodicalIF":6.3,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186819","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

Olefin metathesis-driven deconstruction and upcycling of chloroprene rubber 烯烃分解驱动氯丁橡胶的分解和升级回收

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-03-18 Epub Date: 2026-02-01 DOI: 10.1016/j.eurpolymj.2026.114549

Jian-Peng Han , Wei Li , Tian-Tian Wang , Chao Wang , Zheng-Hong Luo , Yin-Ning Zhou

{"title":"Olefin metathesis-driven deconstruction and upcycling of chloroprene rubber","authors":"Jian-Peng Han , Wei Li , Tian-Tian Wang , Chao Wang , Zheng-Hong Luo , Yin-Ning Zhou","doi":"10.1016/j.eurpolymj.2026.114549","DOIUrl":"10.1016/j.eurpolymj.2026.114549","url":null,"abstract":"<div><div>The accumulation of non-degradable chloroprene rubber (CR) causes detrimental environmental concerns. In this work, deconstruction of CR (i.e., CR240T) and upcycling of CR240T with norbornene (NBE) through olefin metathesis reaction using the second-generation Grubbs catalyst (<strong>G2</strong>) are investigated. Experimental results show that the number-averaged molar mass (<em>M</em><sub>n</sub>) of deconstruction product (DCR) decreases from 136 to 21 kDa with the increase of <strong>G2</strong> concentration. Meanwhile, deconstruction mechanism becomes more complex from the cross-metathesis with <strong>G2</strong> dominated to the cross-metathesis and ring-closing metathesis (RCM) reaction coexisted. Besides, concurrent ring-opening metathesis polymerization of norbornene (NBE) and macromolecular cross-metathesis between CR240T and PNBE enables the synthesis of CR and PNBE multiblock-like copolymer (CRNBE). The <em>M</em><sub>n</sub> of the resulting CRNBE increases as NBE concentration increases or <strong>G2</strong> concentration decreases. The copolymers CRNBE<sub>0.5</sub> and CRNBE<sub>1</sub> own much higher Young’s modulus as 91.0 ± 3.9 MPa and 347.8 ± 16.7 MPa, respectively, compared to that of the pristine CR240T (28.1 ± 2.7 MPa). This study provides meaningful insights into the deconstruction mechanism of CR <em>via</em> metathesis reaction and a facile way for its upcycling.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"246 ","pages":"Article 114549"},"PeriodicalIF":6.3,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146122693","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

High heat-resistant transparent poly(amide-imide)s based on diacyl chloride containing imide and cyclohexane structures by ortho-methyl side group effect 基于邻甲基副基效应的含亚胺和环己烷结构的高耐热透明聚（酰胺-亚胺）

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-03-18 Epub Date: 2026-02-11 DOI: 10.1016/j.eurpolymj.2026.114573

Jinglei Xing , Yujie Zhang , Lei Yang , Tianci Ma , Yanling Wang , Xingzhong Fang , Long Wang , Guofei Chen

{"title":"High heat-resistant transparent poly(amide-imide)s based on diacyl chloride containing imide and cyclohexane structures by ortho-methyl side group effect","authors":"Jinglei Xing , Yujie Zhang , Lei Yang , Tianci Ma , Yanling Wang , Xingzhong Fang , Long Wang , Guofei Chen","doi":"10.1016/j.eurpolymj.2026.114573","DOIUrl":"10.1016/j.eurpolymj.2026.114573","url":null,"abstract":"<div><div>With the rapid development of flexible optoelectronic devices, higher requirements are placed on the heat resistance and transparency of colorless polyimide (CPI). In this study, two imide-containing diacyl chlorides derived from 1,2,4,5-cyclohexanetetracarboxylic dianhydride (HPMDA), HC-HPMDA and MC-HPMDA, were successfully designed and synthesized, and two series of poly(amide-imide)s (PAIs) were obtained by polymerization with 2,2′-bis(trifluoromethyl)benzidine (TFDB), 9,9-bis(4-aminophenyl)fluorene (FDA) and <em>m</em>-phenylenediamine (<em>m</em>-PDA), respectively. The rigid amide bonds in the molecular chains could generate hydrogen bonds to enhance intermolecular forces. In addition, the introduction of the alicyclic structures disrupted the conjugation effect of the main chain to improve the transparency of the polymers. The obtained PAI films had high glass transition temperature (<em>T</em><sub>g</sub> > 389 ℃), low coefficient of thermal expansion (CTE < 49.8 ppm/K) and excellent optical transparency. Therefore, the incorporation of imide rings and amide bonds into the main chain through polymerization with HPMDA-derived diacyl chloride provided a simple method for the synthesis of heat-resistant transparent PAIs. In addition, the introduction of CH<sub>3</sub> groups limited the movement of the chain segments, which improved the comprehensive properties of PAIs. In particular, PAI-TFDB-M exhibited high <em>T</em><sub>g</sub> of 426 ℃, low CTE of 36.1 ppm/K, high transmittance of 87% at 400 nm and good mechanical properties with tensile strength of 140 MPa and tensile modulus of 4.2 GPa, which is expected to be applied in the field of flexible optoelectronics.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"246 ","pages":"Article 114573"},"PeriodicalIF":6.3,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186817","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

Porous Degradable Polyesters from Ring-Opening Polymerization within Oil-in-Oil Emulsions: Initiation, Catalysis, and Foaming 多孔可降解聚酯从开环聚合在油中油乳剂：引发，催化和发泡

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-03-18 Epub Date: 2026-01-13 DOI: 10.1016/j.eurpolymj.2026.114514

Samah Saied-Ahmad, Ofir Binenthal, Keshet Yelin, Michael S. Silverstein

{"title":"Porous Degradable Polyesters from Ring-Opening Polymerization within Oil-in-Oil Emulsions: Initiation, Catalysis, and Foaming","authors":"Samah Saied-Ahmad, Ofir Binenthal, Keshet Yelin, Michael S. Silverstein","doi":"10.1016/j.eurpolymj.2026.114514","DOIUrl":"10.1016/j.eurpolymj.2026.114514","url":null,"abstract":"<div><div>PolyMIPEs are macroporous polymers templated within medium internal phase emulsions (MIPEs), 30 to 74 vol % internal phase. Emulsion-templated biocompatible and biodegradable polycaprolactone (PCL) polyMIPEs, attractive for biomedical applications such as tissue engineering, have been generated using oligomeric polyols. Macroporous, high molecular weight PCLs, advantageous for many applications, can be accessed through the ring-opening polymerization (ROP) of ε-caprolactone (CL) within oil-in-oil (O/O) emulsions. Here, a novel toolset for synthesizing macroporous biodegradable, and even printable polyesters was generated by combining ROP, emulsion templating, and foaming in a versatile design platform to provide enhanced control over the macromolecular architecture, porous structure, properties, and degradation.</div><div>Highly interconnected, macroporous PCLs, with densities and moduli suitable for soft tissue scaffolds, were synthesized under various conditions. The relatively low-temperature, metal-free organo-catalysts are of interest for biomedical applications and the room temperature UV catalysis can enable access to additive manufacturing. The introduction of hierarchical porosity through foaming reduced the density and modulus, while enhancing the degradation rate. Poly(<span>l</span>-lactide) polyMIPEs, with densities and moduli similar to those of the PCL polyMIPEs, exhibited significantly higher degradation rates.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"246 ","pages":"Article 114514"},"PeriodicalIF":6.3,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146122696","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

Preparation of adhesive and degradable hydrogels with adjustable viscosity by photo controlled RAFT polymerization 光控RAFT聚合制备粘度可调的胶粘剂和可降解水凝胶

IF 6.3 2区化学

European Polymer Journal Pub Date : 2026-03-18 Epub Date: 2026-02-08 DOI: 10.1016/j.eurpolymj.2026.114566

Jinhui Liu , Zipeng Zhang , Yueqin Yu , Yuetao Liu , Jianzhi Liu

{"title":"Preparation of adhesive and degradable hydrogels with adjustable viscosity by photo controlled RAFT polymerization","authors":"Jinhui Liu , Zipeng Zhang , Yueqin Yu , Yuetao Liu , Jianzhi Liu","doi":"10.1016/j.eurpolymj.2026.114566","DOIUrl":"10.1016/j.eurpolymj.2026.114566","url":null,"abstract":"<div><div>Injectable photo-crosslinkable adhesive hydrogels represent an effective strategy for achieving in vivo wound hemostasis and promoting healing. However, developing adhesive gel dressings that simultaneously possess strong tissue adhesion, injectability, photo-curability, inherent antimicrobial properties, and excellent biocompatibility remains a significant challenge. Herein, by employing photo-controlled reversible addition–fragmentation chain transfer (RAFT) polymerization, in which the polymerization process can be “turned on” and “suspend” by regulating the light source, a spatiotemporally controllable hydrogel was prepared using the photo-RAFT agent (InZ), acrylic acid (AA), and acryloyl chitosan (AeCS).Benefiting from the properties of photoinitiator InZ, the photopolymerization process can be precisely regulated under ambient conditions, allowing for in situ gel formation directly at wound sites. The obtained hydrogel exhibited excellent mechanical properties, swelling behavior, and biocompatibility (>80%). It showed strong adhesion (>11.8kpa) and repeatable adhesiveness to skin tissue and also adhered well to various substrates. Moreover, it displayed good inherent antimicrobial capability against <em>Escherichia coli</em> (73.4%∼89.96%) and <em>Staphylococcus aureus</em> (72.7%∼87.04%). By introducing a natural macromolecular crosslinker, the hydrogel was endowed with degradability. Notably, based on the characteristics of photo-controlled RAFT polymerization, a prepolymer solution with tunable viscosity was obtained, endowing the hydrogel with injectability. Taken together, these results indicate that the constructed hydrogel holds great potential as a biomedical material.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"246 ","pages":"Article 114566"},"PeriodicalIF":6.3,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186820","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

New conductive elastomers based on aliphatic polycarbonate and polymeric deep eutectic solvent for flexible wearable sensors 基于脂肪族聚碳酸酯和聚合物深共晶溶剂的柔性可穿戴传感器用新型导电弹性体

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.2026.114565

Panpan Gu , Dongshu Chen , Rui Zhang , Xiaoxu Xu , Dehong Cheng , Bai Wang , Jianshe Hu

{"title":"New conductive elastomers based on aliphatic polycarbonate and polymeric deep eutectic solvent for flexible wearable sensors","authors":"Panpan Gu , Dongshu Chen , Rui Zhang , Xiaoxu Xu , Dehong Cheng , Bai Wang , Jianshe Hu","doi":"10.1016/j.eurpolymj.2026.114565","DOIUrl":"10.1016/j.eurpolymj.2026.114565","url":null,"abstract":"<div><div>Conductive elastomers have attracted extensive research interest due to their great potential in flexible electronics and health-monitoring applications. In this study, a novel green conductive elastomer (APC-PDES) based on aliphatic polycarbonate (APC) and polymeric deep eutectic solvent (PDES) was successfully prepared. The obtained elastomer APC-PDES displayed mechanical properties necessary for meeting the application, and exhibited a breaking stress of 89.8 kPa and an elongation at break of 219.1%. It also showed a low glass transition temperature of −6.70°C and good thermal stability with decomposition temperature of 247.39°C. Moreover, the elastomer exhibited exceptional self-healing capabilities, achieving self-healing efficiencies of 85.9% for strain and 82.4% for stress, high sensitivity with a gauge factor with increasing from 1.75 to 5.68 within the range of 0–200% of the strain, and stable response characteristics during the simultaneous real-time monitoring of human joint movements and microexpressions, when incorporated into flexible sensors. Additionally, this elastomer allowed for the acquisition of clear and stable electrocardiogram signals as a bio-electrode. This research provides a new idea for detecting human movement and health in the future.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"246 ","pages":"Article 114565"},"PeriodicalIF":6.3,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186818","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