Polymers最新文献_第8页

Preparation of Self-Healing Antifogging Hard Coatings Using Carboxy-Functionalized Polysilsesquioxanes and Oligo(ethylene glycol)s. 羧基功能化聚硅氧烷和低聚乙二醇制备自愈防雾硬涂料。

IF 4.9 3区工程技术

Polymers Pub Date : 2025-09-15 DOI: 10.3390/polym17182491

Seiya Morinaga, Rione Baba, Chino Fujii, Yoshiro Kaneko

{"title":"Preparation of Self-Healing Antifogging Hard Coatings Using Carboxy-Functionalized Polysilsesquioxanes and Oligo(ethylene glycol)s.","authors":"Seiya Morinaga, Rione Baba, Chino Fujii, Yoshiro Kaneko","doi":"10.3390/polym17182491","DOIUrl":"10.3390/polym17182491","url":null,"abstract":"Water-resistant antifogging hard coatings possessing self-healing properties were successfully prepared by applying N,N-dimethylformamide solutions containing the mixtures of carboxy-functionalized polysilsesquioxane (PSQ-2C) with oligo(ethylene glycol)s (OEGs; n = 2-6 and n = 2-4) at the feed functional group ratios (carboxy groups in PSQ-2C/hydroxy groups in OEG) of 10:1 and 4:1, respectively, onto oxygen plasma-treated glass substrates, followed by heat drying, water immersion, and room-temperature drying. The formation of ester bonds in the resulting coatings, indicating the presence of a cross-linked structure, was confirmed via Fourier-transform infrared/attenuated total reflectance spectroscopy. Notably, the coating prepared using PSQ-2C and tetraethylene glycol (OEG; n = 4) at a feed functional group ratio of 10:1 demonstrated no peeling or dissolution even after water immersion for 1 h, and its surface hardness, which was evaluated via the pencil scratch test, was 4H. Additionally, when exposed to water vapor generated from warm water at 40 °C at a distance of 2 cm, the coating maintained transparency for up to 85 s, confirming its excellent antifogging performance. Finally, the coating exhibited self-healing properties, as evidenced by the disappearance of scratches induced by a 5H pencil when the coating was left standing at 25 °C and 30% relative humidity for 5 min.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":"17 18","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12473423/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145177931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of ZnCl₂ Treatment Parameters on the Thermo-Hydrolysis of Recycled MDF for Epoxy Composites. ZnCl2处理参数对环氧复合材料中密度纤维板热水解的影响。

IF 4.9 3区工程技术

Polymers Pub Date : 2025-09-15 DOI: 10.3390/polym17182493

Çağrı Olgun, Koray Çufa

{"title":"Effect of ZnCl2 Treatment Parameters on the Thermo-Hydrolysis of Recycled MDF for Epoxy Composites.","authors":"Çağrı Olgun, Koray Çufa","doi":"10.3390/polym17182493","DOIUrl":"10.3390/polym17182493","url":null,"abstract":"The aim of this study is to determine the hydrothermal recycling of medium-density fiberboard (MDF) wastes using zinc chloride (ZnCl2) as an acidic catalyst to obtain reinforcing fibers for epoxy-based composites. For this purpose, during the hydrothermal recycling process (110 °C, 0.4 bar), zinc chloride solutions with different concentrations (0% to 30%) were applied at different time intervals (20 to 60 min). The recycled fibers were characterized by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope-energy dispersive spectrometry (SEM-EDS), carbon (C) (%), hydrogen (H) (%), and nitrogen (N) (%) contents, and fiber classification. The fibers were added as a filler (1% w/w) to epoxy composites. The compression strength and of the epoxy composites as assessed and differential scanning calorimetry (DSC) characterization was performed. According to the results, nitrogen content decreased with increasing ZnCl2 concentration. Furthermore, the fine fibers ratios increased with increasing treatment time. The results suggest that recycled fibers can be used as a filler in epoxy composites; however, a long treatment time adversely affects the compression strength of epoxy composites.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":"17 18","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12473326/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145177852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fabrication and In Vitro Evaluation of LL37-Loaded Electrospun PHB/Collagen Nanofibers for Wound Healing. 负载ll37的电纺PHB/胶原纳米纤维的制备及体外评价。

IF 4.9 3区工程技术

Polymers Pub Date : 2025-09-15 DOI: 10.3390/polym17182486

Beyza Nur Sayaner Taşçı, Sümeyye Kozan, Meltem Demirel Kars, Kemal Çetin, Sema Karslıoğlu, Gökhan Kars

{"title":"Fabrication and In Vitro Evaluation of LL37-Loaded Electrospun PHB/Collagen Nanofibers for Wound Healing.","authors":"Beyza Nur Sayaner Taşçı, Sümeyye Kozan, Meltem Demirel Kars, Kemal Çetin, Sema Karslıoğlu, Gökhan Kars","doi":"10.3390/polym17182486","DOIUrl":"10.3390/polym17182486","url":null,"abstract":"Skin repair is essential in the treatment of burns and wounds. After an injury, the concept of tissue engineering emerges to restore skin function and facilitate wound healing. This field often involves the use of biodegradable and biocompatible materials as a primary scaffold for tissue regeneration. In this study, a PHB/Collagen wound dressing mat loaded with the antimicrobial peptide LL37 was developed via electrospinning. The polymer solutions were prepared by dissolving polyhydroxybutyrate (PHB) biopolymer extracted from Cereibacter sphaeroides, commercial PHB, and marine collagen in hexafluoroisopropanol (HFIP). The resulting nanofibers were characterized using Field-Emission Scanning Electron Microscopy (FE-SEM), Thermogravimetric Analysis (TGA), X-Ray Diffractometry (XRD), and an Optical Tensiometer. Antibacterial activity assessments were conducted against Staphylococcus aureus (ATCC 29213) and Escherichia coli (ATCC 25922). Degradability studies were carried out in DMEM medium, cytotoxicity tests were performed on the L929 fibroblast cell line, and the wound healing effect was investigated on the HS2 keratinocyte cell line. To evaluate the properties of the designed material under in vitro conditions, the morphology of cells on the nanofiber was examined using an inverted light microscope. The findings demonstrated that the nanofibers were biocompatible in vitro and exhibited no toxic effects. And, compared to the control groups, the 5.56 nmol LL37-loaded PHB/Collagen nanofibers significantly enhanced wound closure by 15-30% and effectively reduced the viability of S. aureus and E. coli by 20-25% and approximately 80-85%, respectively. These results highlight the therapeutic potential of LL37-loaded PHB/Collagen nanofibers for use in wound healing applications.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":"17 18","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12473663/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145177644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Arabinoxylan-Based Bioplastic from Wheat Bran: A Promising Replacement for Synthetic Plastics. 小麦麸皮阿拉伯木聚糖基生物塑料：一种有前途的合成塑料替代品。

IF 4.9 3区工程技术

Polymers Pub Date : 2025-09-15 DOI: 10.3390/polym17182488

Md Abdur Rahim Badsha, Michael Kjelland, Chad Ulven, Khwaja Hossain

{"title":"Arabinoxylan-Based Bioplastic from Wheat Bran: A Promising Replacement for Synthetic Plastics.","authors":"Md Abdur Rahim Badsha, Michael Kjelland, Chad Ulven, Khwaja Hossain","doi":"10.3390/polym17182488","DOIUrl":"10.3390/polym17182488","url":null,"abstract":"The milling process of wheat annually generates over 150 million tons of wheat bran (WB), which has significant potential for bioplastic production. However, the production of bioplastics from these resources has never been explored until now. Wheat bran (WB) polymer was evaluated for its potential as an environmentally friendly biodegradable plastic, exhibiting a tensile strength of 2.3 MPa, elongation exceeding 100%, and resistance to diluted mineral acids, thereby highlighting its suitability for food packaging and related applications. The biodegradable plastic films were prepared through a molding process that involved three steps: (1) extraction of arabinoxylan from wheat bran, (2) hydrolysis and plasticization with glycerol, and (3) blending with polyvinyl alcohol (PVA) in varying proportions. The resulting bioplastic exhibits competitive mechanical properties and biodegradability. Furthermore, the biodegradable plastic developed in this research contributes to agricultural waste management, the development of value-added products, and the reduction of carbon emissions incurred from plastic industries. Additionally, it can replace and reduce reliance on synthetic plastics, which are non-degradable and a source of severe environmental pollution.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":"17 18","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12473582/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145177343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prestress Transfer in NSM CFRP-Strengthened RC Structures Under Curing and Service Temperature Effects: Experimental Validation and Analytical Modeling. 养护和使用温度影响下NSM cfrp增强RC结构的预应力传递：试验验证和分析模型。

IF 4.9 3区工程技术

Polymers Pub Date : 2025-09-15 DOI: 10.3390/polym17182492

Shuang Gong, Peiqi He, Ruogu Wang, Junjin Li, Jun Liu, Miao Su

{"title":"Prestress Transfer in NSM CFRP-Strengthened RC Structures Under Curing and Service Temperature Effects: Experimental Validation and Analytical Modeling.","authors":"Shuang Gong, Peiqi He, Ruogu Wang, Junjin Li, Jun Liu, Miao Su","doi":"10.3390/polym17182492","DOIUrl":"10.3390/polym17182492","url":null,"abstract":"This study examines the prestress transmission behavior in near-surface-mounted (NSM) carbon fiber-reinforced polymer (CFRP)-strengthened reinforced concrete structures, with particular emphasis on the effects of temperature. Experimental tests were conducted to evaluate the tensile and shear properties of epoxy adhesives under a range of curing temperatures (20-100 °C) and ambient service temperatures (0-80 °C). The results reveal an inverse exponential relationship between curing time and temperature. Notably, adhesive strength declines significantly above 60 °C and the adhesive loses functionality at 80 °C. Building on these findings, an analytical model was developed to predict prestress transfer length, CFRP strain distribution, and interfacial shear stress. The model incorporates effective bond stiffness and a prestress reduction coefficient to account for varying prestress levels (10-50%). Parametric analyses identify the CFRP elastic modulus, cross-sectional geometry, adhesive thickness, and degree of curing as critical factors influencing prestress transmission. The model's predictions were validated against experimental data, demonstrating its reliability. Overall, this work provides a theoretical foundation for optimizing the design of NSM CFRP-strengthened structures under complex thermal conditions.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":"17 18","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12473332/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145177946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biomimetic Functional Fluorinated Oxygen-Containing Coatings on 3D-Printing Composite Polymer Items. 3d打印复合聚合物项目的仿生功能氟化含氧涂层。

IF 4.9 3区工程技术

Polymers Pub Date : 2025-09-15 DOI: 10.3390/polym17182490

Georgy Rytikov, Fedor Doronin, Andrey Evdokimov, Mikhail Savel'ev, Yuriy Rudyak, Victor Nazarov

引用次数: 0

Polarimetric-Based Analysis and Manufacturing of Dye-Doped Liquid Crystal Photoaligned Cells for the Visible Range. 可见光范围染料掺杂液晶光对准电池的偏振分析与制造。

IF 4.9 3区工程技术

Polymers Pub Date : 2025-09-15 DOI: 10.3390/polym17182489

Adrián Moya, Adriana R Sánchez-Montes, Emilio J Mena, Manuel Ortuño, Mariela L Álvarez, Eva M Calzado, Andrés Márquez

{"title":"Polarimetric-Based Analysis and Manufacturing of Dye-Doped Liquid Crystal Photoaligned Cells for the Visible Range.","authors":"Adrián Moya, Adriana R Sánchez-Montes, Emilio J Mena, Manuel Ortuño, Mariela L Álvarez, Eva M Calzado, Andrés Márquez","doi":"10.3390/polym17182489","DOIUrl":"10.3390/polym17182489","url":null,"abstract":"The accurate and controlled alignment of liquid crystals (LCs) in modern optical devices is of great importance. Photoalignment is one of the most appealing approaches for achieving more versatile alignment in designs. One of the most important parameters of these devices is the thickness and the homogeneity in the photoaligned area, especially in devices that introduce retardance. In this work, we propose a novel polarimetric-based method for the measurement of thickness of homogeneous liquid crystal cells that considers diattenuation effects and how they affect the retardance generated by a liquid crystal variable retarder (LCVR). We experimentally demonstrate the production of dye-doped liquid crystal (DDLC) devices, photoaligned in the visible range with a 532 nm laser light, of two different thicknesses with a very high spatial homogeneity. Thinner devices can be used across the whole visible spectrum despite the residual diattenuation at shorter wavelengths, whereas thicker ones achieve the best degree of polarization (DOP) in the transmitted wavefronts, close to 100%, at longer wavelengths.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":"17 18","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12474005/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145177921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of Drug Properties, Formulation Composition, and Processing Parameters on the Stability and Dissolution Performance of Amorphous Solid Dispersions-Based Tablets. 药物性质、配方组成及工艺参数对非晶固体分散片稳定性及溶出性能的影响。

IF 4.9 3区工程技术

Polymers Pub Date : 2025-09-14 DOI: 10.3390/polym17182484

Ioannis Pantazos, Maria Poimenidou, Dimitrios Kouskouridas, Evangelos Tzaferas, Vasiliki Karava, Christos Cholevas, Afroditi Kapourani, Panagiotis Barmpalexis

{"title":"Influence of Drug Properties, Formulation Composition, and Processing Parameters on the Stability and Dissolution Performance of Amorphous Solid Dispersions-Based Tablets.","authors":"Ioannis Pantazos, Maria Poimenidou, Dimitrios Kouskouridas, Evangelos Tzaferas, Vasiliki Karava, Christos Cholevas, Afroditi Kapourani, Panagiotis Barmpalexis","doi":"10.3390/polym17182484","DOIUrl":"10.3390/polym17182484","url":null,"abstract":"Polymeric-based amorphous solid dispersions (ASDs) represent a widely employed strategy for enhancing the oral bioavailability of poorly water-soluble drugs, but their successful implementation in solid dosage forms requires careful optimization of both formulation composition and compaction parameters. In this study, the performance of polymeric-based ASD tablets were investigated using two model active pharmaceutical ingredients (APIs) with distinct glass-forming abilities (GFAs) and physicochemical characteristics: (1) indomethacin (IND, a good glass former) and (2) carbamazepine (CBZ, a poor glass former). ASDs were prepared at various API-to-polyvinylpyrrolidone (PVP) ratios (10:90, 20:80 and 40:60 w/w) and incorporated into round-shaped tablets at different ASD loadings (20% and 50% w/w). The impact of compaction pressure and dwell time on the mechanical properties, disintegration, and supersaturation performance was assessed, both immediately after preparation and following three months of storage at 25 °C and 60% relative humidity. Solid-state analysis confirmed the amorphous state of the APIs and revealed the development of API-polymer molecular interactions. Supersaturation studies under non-sink conditions demonstrated that dissolution behavior was strongly influenced by drug loading, polymer content, and compaction conditions, with CBZ formulations exhibiting faster release but greater susceptibility to performance loss during storage. The comparative evaluation of IND and CBZ highlights the critical role of API properties in determining the physical stability and dissolution performance of ASD tablets, underscoring the need for API-specific design strategies in ASD-based formulation development.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":"17 18","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12473797/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145177735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Processing-Driven Structuring of Polymer-Based Materials: A Brief Overview. 聚合物基材料的加工驱动结构：简要概述。

IF 4.9 3区工程技术

Polymers Pub Date : 2025-09-14 DOI: 10.3390/polym17182483

Fulvia Cravero, Rossella Arrigo, Alberto Frache

引用次数: 0

Effect of Printing Temperature on the Microstructure and Tensile Properties of Polylactic Acid-Magnetic Iron Composites Manufactured by Material Extrusion. 打印温度对材料挤压制备聚乳酸-磁性铁复合材料微观结构和拉伸性能的影响。

IF 4.9 3区工程技术

Polymers Pub Date : 2025-09-14 DOI: 10.3390/polym17182485

Meriem Bouchetara, Sofiane Belhabib, Alessia Melelli, Jonathan Perrin, Timm Weitkamp, Ahmed Koubaa, Mahfoud Tahlaiti, Mustapha Nouri, Sofiane Guessasma

{"title":"Effect of Printing Temperature on the Microstructure and Tensile Properties of Polylactic Acid-Magnetic Iron Composites Manufactured by Material Extrusion.","authors":"Meriem Bouchetara, Sofiane Belhabib, Alessia Melelli, Jonathan Perrin, Timm Weitkamp, Ahmed Koubaa, Mahfoud Tahlaiti, Mustapha Nouri, Sofiane Guessasma","doi":"10.3390/polym17182485","DOIUrl":"10.3390/polym17182485","url":null,"abstract":"In this study, we examined how printing temperature affects the microstructure and mechanical properties of polylactic acid (PLA) composite reinforced with iron oxide i.e., magnetite manufactured using a material extrusion technique. The composite was printed at temperatures from 185 °C to 215 °C. Microstructure analysis via synchrotron radiation X-ray microtomography revealed changes in both iron oxide and porosity contents within the printed structures. Mechanical testing results demonstrated a limited effect of the printing temperature on tensile performance. Finite element computation is considered to predict the elasticity behavior of the printed composite by converting 3D images into 3D structural meshes. When implementing a two-phase model, the predictions show a leading role of the iron oxide content, and an overestimation of the stiffness of the composite. A three-phase model demonstrates a better matching of the experimental results suggesting a limited load transfer across the PLA-iron oxide interface with Young's moduli in the interphase zone as small as 10% of PLA Young's modulus. Magnetic actuation demonstrates that experiments on PLA-iron oxide plates reveal a pronounced thickness-dependent limitation, with the maximum deflection observed in thin strips of 0.4 mm.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":"17 18","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12473559/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145177846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0