European Polymer Journal最新文献_第9页

Construction of triple-responsive nanogel embedded with upconversion nanoparticles via microemulsion polymerization for near-infrared-controlled drug delivery 微乳液聚合法制备上转化纳米颗粒包埋的三响应纳米凝胶，用于近红外控制给药

IF 6.3 2区化学

European Polymer Journal Pub Date : 2025-08-25 DOI: 10.1016/j.eurpolymj.2025.114223

Yuanpeng Cai, Danyang Li, Yufei Ling, Huihui Jiang, Hui Liu

{"title":"Construction of triple-responsive nanogel embedded with upconversion nanoparticles via microemulsion polymerization for near-infrared-controlled drug delivery","authors":"Yuanpeng Cai, Danyang Li, Yufei Ling, Huihui Jiang, Hui Liu","doi":"10.1016/j.eurpolymj.2025.114223","DOIUrl":"10.1016/j.eurpolymj.2025.114223","url":null,"abstract":"<div><div>It was generally accepted that ultra-violet (UV) light was prone to suffer from shallow tissue penetration and potential cell phototoxicity, limiting its further application in biomedical field. To overcome this shortcoming, a novel triple-responsive nanogel embedded with upconversion nanoparticles (UCNPs), β-NaYF<sub>4</sub>:Yb,Tm, was constructed by emulsion polymerization of photo-responsive SPMA, temperature-sensitive N-isopropylacrylamide (NIPAM), and pH-responsive methacrylic acid (MAA). A series of characterizations were used to prove successful synthesis of the composite nanogel. The system exhibited reversible volume change in response to pH, temperature, and near-infrared (NIR) light, enabled by UCNPs-mediated photoactivation. With doxorubicin (DOX) as a model molecule, drug loading efficiency of composite nanogel could attain relatively high value of 53.06 ± 1.58 %. High release efficiency of 90.53 % could be achieved under UV light, 73.64 % under NIR light, and 82.17 % at pH = 3 & 30 °C, with minimal release efficiency (<6%) under normal physiological condition (pH = 7, 36 °C), confirming controllable releasing behaviors of the nanogel. Also, the drug releasing process could be well fitted with Weibull model. Cytocompatibility assays confirmed the nanogels’ safety (87.6 % viability at 500 <u>μ</u>g/mL), while DOX-loaded nanogels showed significant cytotoxicity toward A549 cells (≤10 % viability, p ≤ 0.001). This study highlighted the potential of UCNPs-doped nanogels for smart, on-demand, and minimally invasive cancer therapy.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"238 ","pages":"Article 114223"},"PeriodicalIF":6.3,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144903358","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 EDOT-based TEMPO polymers and the electrocatalytic performance for HMF oxidation edot基TEMPO聚合物的制备及其对HMF氧化的电催化性能

IF 6.3 2区化学

European Polymer Journal Pub Date : 2025-08-24 DOI: 10.1016/j.eurpolymj.2025.114230

Huijie Liu , Jiahui Dai , Jin Kong , Zhenlu Shen , Meichao Li

{"title":"Preparation of EDOT-based TEMPO polymers and the electrocatalytic performance for HMF oxidation","authors":"Huijie Liu , Jiahui Dai , Jin Kong , Zhenlu Shen , Meichao Li","doi":"10.1016/j.eurpolymj.2025.114230","DOIUrl":"10.1016/j.eurpolymj.2025.114230","url":null,"abstract":"<div><div>In this study, three novel EDOT-based TEMPO derivative monomers 4-(((2,3-dihydrothieno[3,4-b][1,4]dioxin-2-yl)methyl)amino)-2,2,6,6-tetramethylpiperidin-1-yloxy (E-NH-TEMPO), 4-(((5,7-di(thiophen-2-yl)-2,3-dihydrothieno[3,4-b][1,4]dioxin-2-yl)methyl)amino)-2,2,6,6-tetramethylpiperidin-1-yloxy (TET-NH-TEMPO) and 4-(((5,7-di(furan-2-yl)-2,3-dihydrothieno[3,4-b][1,4]dioxin-2-yl)methyl)amino)-2,2,6,6-tetramethylpiperidin-1-yloxy (FEF-NH-TEMPO) were successfully synthesized. The corresponding polymer electrodes (PE-NH-TEMPO, PTET-NH-TEMPO and PFEF-NH-TEMPO) were prepared via electrochemical polymerization. Compared with E-NH-TEMPO, attaching thiophene rings to α-positions of EDOT helped to improve the polymerization performance of TET-NH-TEMPO, whereas the presence of furan rings impaired the polymerization performance of FEF-NH-TEMPO. Meanwhile, PTET-NH-TEMPO showed high electrocatalytic activity for selective oxidation of HMF with the presence of N-methylimidazole in the solution. In addition, the oxidation reaction of HMF on PTET-NH-TEMPO was monitored using <em>in situ</em> FTIR technology, and the possible mechanism was proposed.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"238 ","pages":"Article 114230"},"PeriodicalIF":6.3,"publicationDate":"2025-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144921400","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-Performance biocompatible shape memory polymers for 4D Printing: Effects of 4-tert-Butylcyclohexyl acrylate as a soft component monomer 用于4D打印的高性能生物相容性形状记忆聚合物：4-叔丁基丙烯酸环己酯作为软组分单体的效果

IF 6.3 2区化学

European Polymer Journal Pub Date : 2025-08-23 DOI: 10.1016/j.eurpolymj.2025.114228

Yu-Hung Lu , Yuan-Min Lin , Shyh-Yuan Lee , Hsuan Chen

{"title":"High-Performance biocompatible shape memory polymers for 4D Printing: Effects of 4-tert-Butylcyclohexyl acrylate as a soft component monomer","authors":"Yu-Hung Lu , Yuan-Min Lin , Shyh-Yuan Lee , Hsuan Chen","doi":"10.1016/j.eurpolymj.2025.114228","DOIUrl":"10.1016/j.eurpolymj.2025.114228","url":null,"abstract":"<div><div>This study explores the potential of <em>tert</em>-butylcyclohexyl acrylate (TBCHA) as a novel soft-segment monomer in the development of 4D printable shape memory polymers (SMPs), using <em>tert</em>-butyl acrylate (tBA) as a reference material. The highly stretchable SMP resin was prepared by mixing synthesized polycaprolactone diacrylate (PCL-DA) as a crosslinker, 4-<em>tert</em>-Butylcyclohexyl acrylate (TBCHA) or <em>tert</em>-butyl acrylate (tBA) as a monomer, and 3 wt% of diphenyl(2,4,6-trimethylbenzoyl) phosphine oxide (TPO) as a photoinitiator. Then, the SMP was printed by using a Liquid-Crystal Display (LCD) 3D printer. With systematic variation in monomer content to evaluate printability, mechanical properties, thermal behavior, shape memory performance, and biocompatibility. The TBCHA-based networks demonstrated lower polymerization shrinkage, higher hardness, greater tensile strength, and improved shape fixity and recovery ratios compared to tBA-based counterparts. These improvements are attributed to the conformational flexibility of the cyclohexyl ring in TBCHA, which promotes efficient stress relaxation and a higher degree of conversion during photopolymerization. Dynamic mechanical analysis (DMA) and differential scanning calorimetry (DSC) revealed higher glass transition temperatures (T<sub>g</sub>), which close to body temperature, and storage modulus in TBCHA systems, correlating with their superior mechanical performance. Furthermore, MTT assays confirmed the cytocompatibility of TBCHA-based SMPs, and degradation studies showed tunable hydrolytic degradation behavior when PCL-DA was incorporated. Collectively, this work establishes TBCHA as a promising monomer for advanced SMP applications, offering a versatile platform for 4D printing technologies in biomedical and functional material fields.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"238 ","pages":"Article 114228"},"PeriodicalIF":6.3,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144907397","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

Novel organic-metal hybrid coordination complex constituted by DOPO and Salen-Ni for enhancing flame retardancy of epoxy resins 由DOPO和Salen-Ni组成的新型有机-金属杂化配合物增强环氧树脂的阻燃性

IF 6.3 2区化学

European Polymer Journal Pub Date : 2025-08-23 DOI: 10.1016/j.eurpolymj.2025.114225

Hao Liu , Yan Lv , Aihua Tang , Weixiang Xu , Tingzhe Wang , Zewen Wu , Shunbao Hu , Qingsong Wu , Yiting Xu , Birong Zeng , Conghui Yuan , Lizong Dai

{"title":"Novel organic-metal hybrid coordination complex constituted by DOPO and Salen-Ni for enhancing flame retardancy of epoxy resins","authors":"Hao Liu , Yan Lv , Aihua Tang , Weixiang Xu , Tingzhe Wang , Zewen Wu , Shunbao Hu , Qingsong Wu , Yiting Xu , Birong Zeng , Conghui Yuan , Lizong Dai","doi":"10.1016/j.eurpolymj.2025.114225","DOIUrl":"10.1016/j.eurpolymj.2025.114225","url":null,"abstract":"<div><div>Frequent fire accidents underscore the urgent challenge for improving the flame retardancy of epoxy resins (EP). Herein, a multi-level synergistic flame retardant (DOPO-Salen-Ni) was constructed via 9,10-dihydro9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and Salen-Ni ligand compounds. Fourier transform infrared spectroscopy and nuclear magnetic resonance spectroscopy confirmed the structure of DOPO-Salen-Ni. Doped DOPO-Salen-Ni improved flexural strength and modulus of EP composites. Limiting oxygen index (LOI) of EP doped 5 wt% DOPO-Salen-Ni (EP/DOPO-Salen-Ni5) was raised to 32.2 % compared with pure EP (25.8 %), achieved UL-94 V0 level. The peak heat release rate, total heat release and total smoke production were reduced by 28.2 %, 26.1 % and 27.1 % compared with pristine EP. DOPO-Salen-Ni enhanced the flame retardant properties of EP through the synergistic mechanism between gas phase and condensed phase. This novel organic–inorganic design strategy offers great potential for flame retardant design.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"238 ","pages":"Article 114225"},"PeriodicalIF":6.3,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144894756","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

Synthesis and characterization of liquid UV-curable-HRI acrylate monomers containing sulfur and aromatic groups 含硫芳基液体紫外光固化hri丙烯酸酯单体的合成与表征

IF 6.3 2区化学

European Polymer Journal Pub Date : 2025-08-23 DOI: 10.1016/j.eurpolymj.2025.114229

Le Ma, Jun Nie, Xiaoqun Zhu

{"title":"Synthesis and characterization of liquid UV-curable-HRI acrylate monomers containing sulfur and aromatic groups","authors":"Le Ma, Jun Nie, Xiaoqun Zhu","doi":"10.1016/j.eurpolymj.2025.114229","DOIUrl":"10.1016/j.eurpolymj.2025.114229","url":null,"abstract":"<div><div>High-refractive-index (HRI) liquid monomers containing unsaturated acrylate double bonds possess advantages such as photocurability at room temperature and environmental friendliness. However, introducing acrylate groups often reduces the refractive index of monomers. Although small-molecule sulfur-containing structures have high refractive indices, their pungent odors restrict their applications. In this study, a series of sulfur-containing monomers have been successfully prepared through the optimized combination of sulfur elements, benzene rings, and acrylates. These monomers are in a liquid state, and the refractive index performance has reached an advanced level among photocurable monomers. Furthermore, the optical properties (refractive indices, transmittances), curing properties (double-bond conversion and rate of polymerization), and thermal stability (TGA) of the polymer films have been emphatically investigated. The polymer film has a refractive index of 1.648–1.672 at 589 nm, an Abbe number of 22.20–29.32, a transmittance of >90 % at 550–800 nm, a double-bond conversion of 70–92 %, and a maximum weight-loss rate (T<sub>max</sub>) temperature of 354–363 ℃, glass transition temperature (T<sub>g</sub>) of 45.91 °C–58.45 °C. It exhibits excellent optical properties, curing properties, and thermal stability, opening up new possibilities for the applications of HRI materials.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"238 ","pages":"Article 114229"},"PeriodicalIF":6.3,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144892885","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

Trefoil-shaped monomer with carbazole-functionalized triazine core for high-performance multi-electrochromic polymer films and devices 具有卡唑功能化三嗪核的三叶草形单体，用于高性能多电致变色聚合物薄膜和器件

IF 6.3 2区化学

European Polymer Journal Pub Date : 2025-08-22 DOI: 10.1016/j.eurpolymj.2025.114227

Merve Guzel , Gizem Bozkurt , Rukiye Ayranci , Hyosung Choi , Metin Ak

{"title":"Trefoil-shaped monomer with carbazole-functionalized triazine core for high-performance multi-electrochromic polymer films and devices","authors":"Merve Guzel , Gizem Bozkurt , Rukiye Ayranci , Hyosung Choi , Metin Ak","doi":"10.1016/j.eurpolymj.2025.114227","DOIUrl":"10.1016/j.eurpolymj.2025.114227","url":null,"abstract":"<div><div>The structural architecture of a material plays an important role in tailoring its electrical, mechanical, and optical properties. One of the most effective, simple, and rational approaches used in molecular design is the synthesis of monomers having three carbazole units attached to the s-triazine nucleus. Herein, we mainly highlight the design and synthesis of a novel three-armed trefoil-shaped monomer (<em>N<sup>2</sup>,N<sup>4</sup>,N<sup>6</sup></em>-tris(4-(4-(9H-carbazol-9-yl)butoxy)phenyl)-1,3,5-triazine-2,4,6-triamine). The 3-TCN encoded trefoil-shaped monomer has been electropolymerized by using the cyclic voltammetry (CV) method in a 0.1 M TBAPF<sub>6</sub>/DCM electrolyte solution. The surface morphology results showed a microporous structure, which can be attributed to the high electrical and optical performances of the polymer film. The cross-linked polymer with three-dimensional charge transport has been found to have improved optical and electrical properties with excellent optical contrast, fast switching time, and long-term stability. The obtained P3-TCN polymer film has exhibited multi-electrochromic properties with color diversity of transparent, yellow, green, and dark green under different applied potentials. High-performance P3-TCN polymer film could be used as an anodic coloring component in the construction of smart windows. Based on this, the solid-state electrochromic device (ECD) consisting of P3-TCN and PEDOT has been fabricated, and its opto-electrical properties have been characterized.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"238 ","pages":"Article 114227"},"PeriodicalIF":6.3,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144895429","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

Superabsorbent hydrogel preparation by copolymerization of pine bark maleilated polyflavonoids with acrylic acid 用松皮马来酸聚黄酮类化合物与丙烯酸共聚制备高吸水性水凝胶

IF 6.3 2区化学

European Polymer Journal Pub Date : 2025-08-21 DOI: 10.1016/j.eurpolymj.2025.114226

Francisca L. Aranda , Aleksandra Nesic , Cristian Miranda , Daniel A. Palacio , Danilo Escobar-Avello , Johanna Castaño , Nacarid Delgado , Arash Moeini , Gustavo Cabrera-Barjas

{"title":"Superabsorbent hydrogel preparation by copolymerization of pine bark maleilated polyflavonoids with acrylic acid","authors":"Francisca L. Aranda , Aleksandra Nesic , Cristian Miranda , Daniel A. Palacio , Danilo Escobar-Avello , Johanna Castaño , Nacarid Delgado , Arash Moeini , Gustavo Cabrera-Barjas","doi":"10.1016/j.eurpolymj.2025.114226","DOIUrl":"10.1016/j.eurpolymj.2025.114226","url":null,"abstract":"<div><div>In this work, maleilated polyflavonoids from pine bark were used as renewable building blocks in the free radical polymerization route of acrylic acid. The copolymerization reaction under different molar ratios of components and different reaction temperatures was studied. It was shown that an increase in reaction temperature from 20 to 80 ℃ increased the conversion degree and accelerated the gelation time. The copolymers with maximum conversion degree were obtained at 62 ℃ and polyflavonoid:acrylic acid molar ratio 1.125. The swelling degree of copolymers strongly depended on temperature and molar ratio of components and ranged between 1000% and 7000 %. The highest swelling degree of 7000 % was obtained for the copolymers synthesized at 80 ℃ and polyflavonoid:acrylic acid with a ratio of 0.25. The results presented in this work imply that it is possible to design the materials with specific morphology and swelling ability by tuning the different reaction parameters. Moreover, it is shown that maleilated polyflavonoids might be used as biobased compounds in industrial routes associated with production of superabsorbent materials.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"239 ","pages":"Article 114226"},"PeriodicalIF":6.3,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145005283","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

Optoelectronic properties of electrodeposited films from dicarbazole-linked monomers: interplay between bridging geometry and electronic structure 二咔唑单体电沉积薄膜的光电性能：桥接几何和电子结构之间的相互作用

IF 6.3 2区化学

European Polymer Journal Pub Date : 2025-08-18 DOI: 10.1016/j.eurpolymj.2025.114201

David Possetto , Damian Pedraza Daza , Gabriela Marzari , Tomas M. Mondino , Fernando Fungo , Darian Vázquez , Rolando A. Spanevello , María Inés Mangione

{"title":"Optoelectronic properties of electrodeposited films from dicarbazole-linked monomers: interplay between bridging geometry and electronic structure","authors":"David Possetto , Damian Pedraza Daza , Gabriela Marzari , Tomas M. Mondino , Fernando Fungo , Darian Vázquez , Rolando A. Spanevello , María Inés Mangione","doi":"10.1016/j.eurpolymj.2025.114201","DOIUrl":"10.1016/j.eurpolymj.2025.114201","url":null,"abstract":"<div><div>This study reports the design, synthesis, and characterization of structurally related donor–acceptor electroactive monomers, each comprising electropolymerizable carbazole units connected via a single bond to a central heterocyclic ring namely, 1,4-triazole, <em>s</em>-triazine, or <em>s</em>-tetrazine. These heterocycles act as bridging frameworks that define the spatial arrangement between the carbazole moieties within the monomer structure. We explore how such systematic structural variations influence the electropolymerization kinetics, electrochemical behavior, charge transport, optoelectronic properties, and morphology of the electrodeposited films. Our results reveal that both the electronic nature of the heterocyclic core and the relative orientation of the carbazole units play a key role in determining the charge transport properties of the resulting polymers. These findings underscore the importance of molecular design in tailoring the electronic and optoelectronic performance of electrodeposited polymeric materials.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"238 ","pages":"Article 114201"},"PeriodicalIF":6.3,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144890026","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

Screening of catalysts based on DFT and preparation of high transmittance PET films 基于DFT催化剂的筛选及高透光率PET薄膜的制备

IF 6.3 2区化学

European Polymer Journal Pub Date : 2025-08-18 DOI: 10.1016/j.eurpolymj.2025.114224

Yifei Ding , Wenxun Sun , Hongwei Gao , Ruiyu Zhang , Xiaobin Yang , Yongping Bai , Shuai Sun

{"title":"Screening of catalysts based on DFT and preparation of high transmittance PET films","authors":"Yifei Ding , Wenxun Sun , Hongwei Gao , Ruiyu Zhang , Xiaobin Yang , Yongping Bai , Shuai Sun","doi":"10.1016/j.eurpolymj.2025.114224","DOIUrl":"10.1016/j.eurpolymj.2025.114224","url":null,"abstract":"<div><div>High-transmittance polyester films are critical for advanced display technologies, yet the relationship between catalyst design and optical performance remains poorly understood. This work investigates seven metal-based catalysts and develops an economical and efficient composite catalyst accordingly. The highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energies of these catalysts are calculated using density functional theory (DFT) method. Results demonstrate that catalysts with lower LUMO energy levels can significantly promote nucleophilic attack during polycondensation, consequently exhibiting superior catalytic efficiency. Subsequently, we prepare a composite catalyst composed of cobalt(II) acetate tetrahydrate and germanium(IV) oxide. By employing the composite catalyst, the synthesized PET films achieved promising transmittance of 91.43 % and luminosity of 92.82 %. This study provides a DFT-driven strategy for designing optical polyesters, offering a scalable approach for advanced display applications.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"238 ","pages":"Article 114224"},"PeriodicalIF":6.3,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144879860","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

Nitroxide-mediated polymerization of methacrylic acid onto silica nanoparticles for the preparation of molecularly imprinted materials 甲基丙烯酸在二氧化硅纳米颗粒上的氮氧化物介导聚合制备分子印迹材料

IF 6.3 2区化学

European Polymer Journal Pub Date : 2025-08-15 DOI: 10.1016/j.eurpolymj.2025.114221

Soumaya Kouki , Najeh Jaoued , Yves Chevalier , Souhaira Hbaieb , Emmanuel Beyou

{"title":"Nitroxide-mediated polymerization of methacrylic acid onto silica nanoparticles for the preparation of molecularly imprinted materials","authors":"Soumaya Kouki , Najeh Jaoued , Yves Chevalier , Souhaira Hbaieb , Emmanuel Beyou","doi":"10.1016/j.eurpolymj.2025.114221","DOIUrl":"10.1016/j.eurpolymj.2025.114221","url":null,"abstract":"<div><div>A new approach was investigated for the synthesis of molecularly imprinted polymers (MIPs) for the selective adsorption of 3,5-dichloro-2-hydroxyacetophenone (DCHA). This method involved poly(methacrylic acid-<em>co</em>-styrene) P(MAA<em>-co</em>-S) layers attached to the surface of silica particles utilizing polymers with either high or low molar masses grown on silica nanoparticles. Nitroxide mediated radical polymerization using a <em>N</em>-<em>tert</em>-butyl-<em>N</em>-[1-diethylphosphono-(2,2-dimethylpropyl)] based nitroxide as a control agent was combined with both “grafting onto” and “grafting through” surface modification techniques. The resulting P(MAA-<em>co</em>-S)-grafted silica nanoparticles showed excellent colloidal stability and dispersibility in 1,4-dioxane. DCHA-imprinted materials along with their non-imprinted counterparts were prepared by using ethylene glycol dimethacrylate as the cross-linker. The adsorption properties of these materials were evaluated and modeled by the Volmer and Langmuir–Volmer adsorption models. It was found that the materials synthesized with high molar mass polymers exhibited greater DCHA uptake compared to those with low molar mass; however, the low molar mass materials showed superior adsorption selectivity.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"238 ","pages":"Article 114221"},"PeriodicalIF":6.3,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144879861","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