Reactive & Functional Polymers最新文献_第8页

Research progress and application of solvent-free technology, green catalysis and biomass resource strategy for the synthesis of benzoxazine 苯并恶嗪合成无溶剂技术、绿色催化及生物质资源策略的研究进展及应用

IF 5.1 3区工程技术

Reactive & Functional Polymers Pub Date : 2025-08-05 DOI: 10.1016/j.reactfunctpolym.2025.106434

Yu Luo, Liwu Zu, Shaobo Dong, Tianyu Lan, Lu Zhang, Wei Zhang, Jun Liu

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Extracellular vesicles derived from nucleus pulposus mesenchymal stem cells combined with hydrogels promote bone defect repair 髓核间充质干细胞衍生的细胞外囊泡与水凝胶结合可促进骨缺损修复

IF 5.1 3区工程技术

Reactive & Functional Polymers Pub Date : 2025-08-05 DOI: 10.1016/j.reactfunctpolym.2025.106433

Yonggang You , Haichao Yu , Suli Chen , Zhen Zhang , Wenhao Hu , Chao Liu , Jing Yi , Xiaoqing Yang , Chengqi Jia , Hua Wang , Fanqi Hu , Xuesong Zhang

{"title":"Extracellular vesicles derived from nucleus pulposus mesenchymal stem cells combined with hydrogels promote bone defect repair","authors":"Yonggang You , Haichao Yu , Suli Chen , Zhen Zhang , Wenhao Hu , Chao Liu , Jing Yi , Xiaoqing Yang , Chengqi Jia , Hua Wang , Fanqi Hu , Xuesong Zhang","doi":"10.1016/j.reactfunctpolym.2025.106433","DOIUrl":"10.1016/j.reactfunctpolym.2025.106433","url":null,"abstract":"<div><div>In the case of large bone defects, the bone tissues cannot regenerate by themselves without extra surgical interventions. Recent studies showed that exosomes are a promising and relatively safe therapeutic tool for bone tissue engineering. Gelatin methacryloyl (GelMA)-based biomaterials can be used as a multifunctional matrix for bone tissue engineering scaffolds through various strategies to overcome major obstacles such as insufficient mechanical properties and uncontrollable degradation. Herein, we investigated the role and mechanism of human nucleus pulposus mesenchymal stem cells (hNPSCs) derived small extracellular vesicles (hNPSCs-EVs) on bone regeneration. EVs from the hNPSCs were initially extracted and identified. GelMA hydrogels were used to deliver hNPSCs-EVs, and the potential of hNPSCs-EVs in bone defect repair was investigated through in vivo and in vitro experiments on rat bone marrow-derived mesenchymal stem cells (BMSCs). In vitro results showed that hNPSCs-EVs offered substantial advantages in promoting BMSCs proliferation, migration, and angiogenesis. They significantly augmented the osteogenic ability of BMSCs by activating the mitogen-activated protein kinase signaling pathway, especially the extracellular regulated protein kinases 1/2 (ERK1/2) signaling pathway. In vivo results showed that hNPSCs-EVs containing GelMA hydrogel (hNPSCs-EVs/GelMA) effectively promoted bone regeneration. These results indicated that hNPSCs-EVs/GelMA offers a potential therapeutic option for bone defect management, and also provided valuable data for understanding the role and mechanism of hNPSCs-sEVs in bone regeneration.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"216 ","pages":"Article 106433"},"PeriodicalIF":5.1,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144842656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Preparation of multifunctional epoxy composites with excellent flame retardancy, UV shielding and low dielectric properties based on fluorinated bismaleimide structure 基于氟化双马来酰亚胺结构的高性能阻燃、紫外线屏蔽和低介电性能环氧复合材料的制备

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Reactive & Functional Polymers Pub Date : 2025-08-05 DOI: 10.1016/j.reactfunctpolym.2025.106429

Lu Li , Yongming Chen , Mengting Wei , Mingyuan Yang , Jiexiang Ren , Richeng Lian , Bifan Guo , Birong Zeng , Yiting Xu , Conghui Yuan , Lizong Dai

{"title":"Preparation of multifunctional epoxy composites with excellent flame retardancy, UV shielding and low dielectric properties based on fluorinated bismaleimide structure","authors":"Lu Li , Yongming Chen , Mengting Wei , Mingyuan Yang , Jiexiang Ren , Richeng Lian , Bifan Guo , Birong Zeng , Yiting Xu , Conghui Yuan , Lizong Dai","doi":"10.1016/j.reactfunctpolym.2025.106429","DOIUrl":"10.1016/j.reactfunctpolym.2025.106429","url":null,"abstract":"<div><div>Epoxy resin is widely used in modern industry, however, its inherent flammability and susceptibility to aging limit its applications. Based on molecular structure design, a fluorinated bismaleimide was first synthesized as the key intermediate. Subsequently, through the highly reactive addition between the P<img>H bond of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and the maleimide double bonds, a novel epoxy modifier (BMFP) was successfully synthesized, which simultaneously exhibited both excellent ultraviolet (UV) shielding performance and better flame retardancy. The resulting modifier demonstrated good compatibility with epoxy resin. Notably, as the addition amount increased, the epoxy composites not only maintained excellent optical transparency but also exhibited better UV-shielding efficiency and flame retardancy. When the BMFP addition amount reached 8 wt%, the epoxy composite achieved a UL-94 V-0 rating with a limiting oxygen index (LOI) of 31 %. In addition, the peak heat release rate (pHRR) and total heat release (THR) were reduced by 21.1 % and 20.3 %, respectively, compared to neat EP. Additionally, the UV-shielding efficiency showed a 93.4 % enhancement relative to the unmodified epoxy matrix. In addition, the presence of -CF<sub>3</sub> in the modifier effectively improved the dielectric and surface hydrophobicity properties of the epoxy composites, reducing dielectric loss by 31.3 % and increasing the water contact angle from 97.2° to 108.2°.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"216 ","pages":"Article 106429"},"PeriodicalIF":5.1,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144858175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Editorial: Shining a spotlight on recent advances in photopolymer science 社论：聚焦于光聚合物科学的最新进展

IF 5.1 3区工程技术

Reactive & Functional Polymers Pub Date : 2025-08-05 DOI: 10.1016/j.reactfunctpolym.2025.106421

Stefan Baudis , Patrick Knaack , Katharina Ehrmann

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Epoxide-functionalized hyperbranched polyethylene and its applications in functional polymer synthesis and hot lithography photopolymer toughening 环氧化物官能化超支化聚乙烯及其在功能聚合物合成和热光刻光聚合物增韧中的应用

IF 5.1 3区工程技术

Reactive & Functional Polymers Pub Date : 2025-08-05 DOI: 10.1016/j.reactfunctpolym.2025.106425

Vojtěch Musil , Dominik Laa , Anatolij Sokolohorskyj , Robert Liska , Katharina Ehrmann , Jan Merna

{"title":"Epoxide-functionalized hyperbranched polyethylene and its applications in functional polymer synthesis and hot lithography photopolymer toughening","authors":"Vojtěch Musil , Dominik Laa , Anatolij Sokolohorskyj , Robert Liska , Katharina Ehrmann , Jan Merna","doi":"10.1016/j.reactfunctpolym.2025.106425","DOIUrl":"10.1016/j.reactfunctpolym.2025.106425","url":null,"abstract":"<div><div>The copolymerization behaviour of four epoxide-containing ene-functionalized monomers with ethene using palladium α-diimine catalyst was investigated. The linker separating oxirane and double bond played a crucial role in the process. High molar mass copolymers of ethene rich in glycidyl 10-undecenoate were obtained without a significant loss of catalyst activity. Allyl glycidyl ether was able to form copolymers with high comonomer incorporation as well, however, the copolymer molar mass and catalyst activity decreased severely. Therefore, we tuned the reaction conditions in order to achieve a better compromise between comonomer incorporation and product molar mass. Adjustments of reaction temperature, ethene pressure and used solvent were shown to impact the copolymer properties. Furthermore, the prepared copolymers were used in subsequent post-polymerization modifications. We have demonstrated that despite the steric hinderance of the polymer chain, pendent epoxide rings can be reacted with acids, O, C, N and Snucleophiles quantitatively to prepare hyperbranched molecules with a diverse range of functional groups. Finally, the prepared epoxide-functionalized hyperbranched polyethylene was tested as rubber toughening agent of brittle photopolymers revealing its potential for hot lithography 3D printing.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"216 ","pages":"Article 106425"},"PeriodicalIF":5.1,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144779539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Advanced palladium-hybrid covalent organic framework: A highly efficient catalyst for sustainable Cascade synthesis of Chromeno[2,3-d]Pyrimidine-8-amines 先进的钯杂化共价有机骨架：可持续级联合成Chromeno[2,3-d]嘧啶-8胺的高效催化剂

IF 5.1 3区工程技术

Reactive & Functional Polymers Pub Date : 2025-07-30 DOI: 10.1016/j.reactfunctpolym.2025.106424

Ankit Verma , Bhojkumar Nayak , Pradumn Jaiswal , Suhag S. Sahay , Shivani Bhagat , Umesh R. Pratap

{"title":"Advanced palladium-hybrid covalent organic framework: A highly efficient catalyst for sustainable Cascade synthesis of Chromeno[2,3-d]Pyrimidine-8-amines","authors":"Ankit Verma , Bhojkumar Nayak , Pradumn Jaiswal , Suhag S. Sahay , Shivani Bhagat , Umesh R. Pratap","doi":"10.1016/j.reactfunctpolym.2025.106424","DOIUrl":"10.1016/j.reactfunctpolym.2025.106424","url":null,"abstract":"<div><div>Covalent organic frameworks account for an emerging class of porous crystalline organic polymers characterized by their modular architecture, facilitating functionalization. The well-defined pores of COFs serve as ideal platforms for stabilizing metal species and ensuring superior accessibility. Incorporating substrate-binding sites within COFs enables the formation of host-guest interactions, thereby promoting synergistic effects that enhance catalytic performance. Polyimide covalent organic framework (PI-COF) is remarkably crystalline, an imide-based COF synthesized via a solvothermal reaction of cost-effective melamine and pyromellitic dianhydride. This COF serves as a robust platform for immobilizing palladium (Pd<sup>2+</sup>) ions, enabling PI-COF catalytic applications. The successful fabrication of (PI-COF) with palladium, i.e.<em>,</em> Pd@PI-COF, has been comprehensively characterized using FTIR, PXRD, <sup>13</sup>C(CP/MAS) NMR, BET, TGA, XPS, FE-SEM, HR-TEM, and ICP-OES. The synthesized Pd@PI-COF is utilized as a heterogeneous catalyst for developing a highly efficient protocol of one-pot synthesis of chromeno[2,3-<em>d</em>] pyrimidine-8-amine via four-component reactions. Pd@PI-COF serves as a sustainable catalyst, facilitating the reaction in ethanol under mild reaction conditions, achieving an exceptional yield up to 93 % in just 50 min. . The catalyst exhibits excellent recyclability and reusability, retaining its catalytic efficiency across four consecutive cycles with negligible loss in activity, while maintaining good turnover numbers (TON) and turnover frequencies (TOF).</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"216 ","pages":"Article 106424"},"PeriodicalIF":5.1,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144858174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Sustainable nanocellulose recovery from newspaper waste to fabricate a composite for sensing and scavenging copper and iron in aqueous effluents and mining wastes 从报纸废物中可持续回收纳米纤维素，以制造一种复合材料，用于感应和清除废水和采矿废物中的铜和铁

IF 5.1 3区工程技术

Reactive & Functional Polymers Pub Date : 2025-07-28 DOI: 10.1016/j.reactfunctpolym.2025.106423

Nuha Y. Elamin , Mohamed R. Elamin , Laila S. Alqarni , Rana O. Yahya , Ahmed Shahat , Reda F.M. Elshaarawy

{"title":"Sustainable nanocellulose recovery from newspaper waste to fabricate a composite for sensing and scavenging copper and iron in aqueous effluents and mining wastes","authors":"Nuha Y. Elamin , Mohamed R. Elamin , Laila S. Alqarni , Rana O. Yahya , Ahmed Shahat , Reda F.M. Elshaarawy","doi":"10.1016/j.reactfunctpolym.2025.106423","DOIUrl":"10.1016/j.reactfunctpolym.2025.106423","url":null,"abstract":"<div><div>This study offers a straightforward and economical method for recovering cellulose nanoparticles (CNMs) from post-consumer newspaper trash in a sustainable manner. The recovered CNMs were subsequently utilized to fabricate a novel solid-state visual composite by immobilizing a newly synthesized fluorescent Schiff base ligand, (saldach(Et<sub>3</sub>N<sup>+</sup>PF<sub>6</sub><sup>−</sup>)<sub>2</sub>, H<sub>2</sub>L) (Saldach ligand). Both the quick and on-site visual identification of Cu<sup>2+</sup> and Fe<sup>3+</sup> ions in aqueous solutions and the effective elimination of these heavy metal pollutants from mining effluent were proved by the resultant Saldach-composite. The Schiff base ligand, characterized by FTIR, NMR, and ESI-MS, exhibited selective binding toward Cu<sup>2+</sup> and Fe<sup>3+</sup> ions, leading to quantifiable UV–Vis spectroscopy. The morphology and composition of the CNMs and the Saldach-composite were investigated using SEM, TEM, DLS, XRD, and XPS analysis, confirming the successful incorporation of the Schiff base onto the CNM matrix. Additionally, the binding mechanism between the Saldach-composite and the target metal ions was clarified by the use of density functional theory (DFT) calculations. For the simultaneous detection and removal of Cu<sup>2+</sup> and Fe<sup>3+</sup> from mine waste, the developed solid-state visual composite presents a viable, economical, and ecologically friendly alternative, especially addressing the difficulties related to mining waste management.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"216 ","pages":"Article 106423"},"PeriodicalIF":5.1,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144748606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Effect of chitosan on 3D printed scaffolds with gelatin–hyaluronic acid, hydroxyapatite and magnetic nanoparticles for bone tissues defects repair 壳聚糖对明胶透明质酸、羟基磷灰石和磁性纳米颗粒3D打印骨组织缺损修复支架的影响

IF 5.1 3区工程技术

Reactive & Functional Polymers Pub Date : 2025-07-27 DOI: 10.1016/j.reactfunctpolym.2025.106422

Iustina Apăvăloaiei , Isabella Nacu , Florina-Daniela Cojocaru , Vera Balan , Maria Bercea , Loredana Elena Niță , Liliana Vereștiuc

{"title":"Effect of chitosan on 3D printed scaffolds with gelatin–hyaluronic acid, hydroxyapatite and magnetic nanoparticles for bone tissues defects repair","authors":"Iustina Apăvăloaiei , Isabella Nacu , Florina-Daniela Cojocaru , Vera Balan , Maria Bercea , Loredana Elena Niță , Liliana Vereștiuc","doi":"10.1016/j.reactfunctpolym.2025.106422","DOIUrl":"10.1016/j.reactfunctpolym.2025.106422","url":null,"abstract":"<div><div>Bone is a dynamic and vascularized tissue, with self-healing abilities, efficient in treating minor defects. Bone tissue engineering has focused on materials used to reconstruct large orthopedics defects and 3D (bio)printing is a revolutionary technology able to design well-defined geometries. The paper details the preparation of printable inks based on methacrylated chitosan with different molecular weight, methacrylated gelatin, hyaluronic acid, hydroxyapatite and magnetic nanoparticle, and evaluates the inks printability, and scaffolds properties in correlation with bone repair requirements. The polymers homogenization with magnetic nanoparticles and hydroxyapatite led to gels with rheological characteristics for 3D printing (shear tests in oscillatory or rotational regimes); inks containing short chitosan chains and high hydroxyapatite concentrations showed suitable viscosity and elasticity. The yield stress results suggest that the inks are becoming more resistant to flow by increasing the Cs molecular weight. Scanning electron microscopy images confirmed the 3D printed architecture and the formation of 3D network with interconnected pores, varying from 50 μm to 150 μm, beneficial for bone cells migration and infiltration. Hydroxyapatite content, strongly influenced scaffolds mechanical features (Young modulus), and by tailoring the polymeric/hydroxyapatite phases, 3D printed scaffolds suitable for implantation in low-load bearing sites. On the other hand, the inclusion of magnetic nanoparticles induced ability to respond to external magnetic field and potential to activate complex pathways for osteogenic differentiation. The prepared scaffolds are cytocompatible, the cells preserved their normal morphology and interacted in uniform layers.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"216 ","pages":"Article 106422"},"PeriodicalIF":5.1,"publicationDate":"2025-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144720813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Hydrophilic-antimicrobial dual-function modification of TPU catheter based on sodium alginate and cationic composite coating 基于海藻酸钠和阳离子复合涂层的TPU导管亲水抗菌双功能改性

IF 5.1 3区工程技术

Reactive & Functional Polymers Pub Date : 2025-07-24 DOI: 10.1016/j.reactfunctpolym.2025.106410

Tongtong Sun , Zekai Zheng , Lingling Cheng , Jingjie Hou , Chenglong Hou , Zhongda Feng , Zhen Wang , Jingqiang Cui

{"title":"Hydrophilic-antimicrobial dual-function modification of TPU catheter based on sodium alginate and cationic composite coating","authors":"Tongtong Sun , Zekai Zheng , Lingling Cheng , Jingjie Hou , Chenglong Hou , Zhongda Feng , Zhen Wang , Jingqiang Cui","doi":"10.1016/j.reactfunctpolym.2025.106410","DOIUrl":"10.1016/j.reactfunctpolym.2025.106410","url":null,"abstract":"<div><div>This study investigates the clinical challenges associated with conventional catheters, particularly bacterial adhesion and catheter-associated infections (CAI), which are exacerbated by surface hydrophobicity. To address these issues, a functional modification strategy for thermoplastic polyurethane (TPU) catheters was developed, leveraging the complexation between sodium alginate (SA) and the cationic antimicrobial agent poly (hexamethylene biguanide) hydrochloride (PHMB) to construct a dual-functional composite coating system with combined hydrophilicity and antibacterial properties. A hydrophilic coating was first formed on the TPU surface using 3-glycidoxypropyltrimethoxysilane (KH-560) and polyvinylpyrrolidone (PVP), significantly reducing surface hydrophobicity. Simultaneously, the anionic properties of SA were utilized to complex cationic antimicrobial agents, forming a long-lasting antibacterial functional layer. The modified catheter exhibited a reduction in the coefficient of friction from 1.3 to 0.03, corresponding to a 53 % improvement in lubricity. Compared to unmodified catheters, the coating introduction showed no significant impact on maximum tensile force or hardness, but slightly reduced the bending modulus, enhancing adaptability in vascular environments. Zone of inhibition assay confirmed the strong antimicrobial efficacy of the hydrophilic-antibacterial coating against <em>Escherichia coli</em> (<em>E. coli</em>) and <em>Staphylococcus aureus</em> (<em>S. aureus</em>). Additionally, cytocompatibility and hemocompatibility verified the biosafety of the modified catheters. By optimizing the composite coating modification, this study successfully achieved efficient synergy between hydrophilicity and antibacterial properties in TPU catheters, providing an innovative solution to reduce the risk of CAI.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"216 ","pages":"Article 106410"},"PeriodicalIF":5.1,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144739547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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High-hardness photocrosslinked coatings from a partially biobased and semi-aromatic unsaturated polyester 部分生物基半芳烃不饱和聚酯高硬度光交联涂料

IF 4.5 3区工程技术

Reactive & Functional Polymers Pub Date : 2025-07-23 DOI: 10.1016/j.reactfunctpolym.2025.106420

Klara Jastak, Elise Brument, Fabrice Burel, Nicolas Désilles, Laurence Lecamp

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