Polymers最新文献_第3页

Feasibility of 3D-Printed PLA Meshes in Gypsum Composites: Preliminary Experiments and Insights. 石膏复合材料3d打印PLA网的可行性：初步实验和见解。

IF 4.7 3区工程技术

Polymers Pub Date : 2025-06-04 DOI: 10.3390/polym17111562

Ahmet Hayrullah Sevinç, Muhammed Yasin Durgun

{"title":"Feasibility of 3D-Printed PLA Meshes in Gypsum Composites: Preliminary Experiments and Insights.","authors":"Ahmet Hayrullah Sevinç, Muhammed Yasin Durgun","doi":"10.3390/polym17111562","DOIUrl":"10.3390/polym17111562","url":null,"abstract":"The mechanical limitations of gypsum-based composites necessitate reinforcement strategies to enhance their structural performance. This study investigates the feasibility of integrating 3D-printed polylactic acid (PLA) meshes into gypsum composites through a series of preliminary experiments. Various mesh configurations were tested, including different fiber thicknesses, mesh grid sizes, and single- and double-layer applications. The impact of mesh incorporation on bulk density, ultrasonic pulse velocity (UPV), bending strength, and compressive strength was assessed. The results indicate that the inclusion of PLA meshes had a limited effect on bulk density and led to a slight decrease in UPV values, suggesting increased porosity. Although improvements in mechanical properties were anticipated, most specimens exhibited lower bending and compressive strengths compared to the reference specimen. Among the tested configurations, 2 mm thick meshes demonstrated relatively higher performance, particularly in bending strength, with narrow-mesh aperture yielding better results. However, double-layer mesh applications consistently resulted in lower strength values. These findings highlight the challenges associated with integrating 3D-printed PLA meshes into gypsum composites. While the study provides valuable insights into mesh-based reinforcement, further investigations are required to optimize fiber-matrix interactions and enhance mechanical performance. Future research should explore alternative printing parameters, improved adhesion techniques, and hybrid reinforcement approaches to fully exploit the potential of additive manufacturing in gypsum-based composites.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":"17 11","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12157172/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144286308","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

Enhancing Technical Performance of PVC Production: A WEP-Based Energy and Water Assessment. 提高PVC生产技术性能：基于wep的能源和水评估。

IF 4.7 3区工程技术

Polymers Pub Date : 2025-06-04 DOI: 10.3390/polym17111561

Rolando Manuel Guardo-Ruiz, Linda Mychell Puello-Castellón, Rodrigo Ortega-Toro, Eduardo Andrés Aguilar-Vásquez, Ángel Darío González-Delgado

{"title":"Enhancing Technical Performance of PVC Production: A WEP-Based Energy and Water Assessment.","authors":"Rolando Manuel Guardo-Ruiz, Linda Mychell Puello-Castellón, Rodrigo Ortega-Toro, Eduardo Andrés Aguilar-Vásquez, Ángel Darío González-Delgado","doi":"10.3390/polym17111561","DOIUrl":"10.3390/polym17111561","url":null,"abstract":"Polyvinyl chloride (PVC) is one of the most widely used polymers due to its physical properties and versatility. Water consumption of the suspension method is a critical issue that hinders competitiveness. In that case, this study implements water integration through direct recycling, with the aim of minimizing both freshwater consumption and wastewater generation. The source-sink diagram was used to generate the recycled water network, and the integrated process was simulated using software. From simulation data, the water-energy-product (WEP) analysis method was used to assess the process performance, and sustainability indicators for water, energy, and product were evaluated. Fractional water consumption and wastewater production ratio indicators increased to 51.1% and 55.0%, compared to 41% and 54% in the non-integrated process, showing improved water efficiency and cost reduction. The unreacted material reuse index reached 100%, while the production yield was 99.8%, due to effective recycling of unreacted VCM. The use of natural gas and energy integration led to optimal performance in TCE, NGCI, and EECI indicators. However, the ESI indicator was high (3.59 MJ/t) due to energy demands from thermal control equipment for water recirculation.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":"17 11","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12157895/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144286295","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

A State-of-the-Art Review on Recent Biomedical Application of Polysaccharide-Based Niosomes as Drug Delivery Systems. 多糖基膜小体作为药物传递系统的生物医学应用研究进展。

IF 4.7 3区工程技术

Polymers Pub Date : 2025-06-04 DOI: 10.3390/polym17111566

Andreea-Teodora Iacob, Andra Ababei-Bobu, Oana-Maria Chirliu, Florentina Geanina Lupascu, Ioana-Mirela Vasincu, Maria Apotrosoaei, Bianca-Stefania Profire, Georgiana-Roxana Tauser, Dan Lupascu, Lenuta Profire

{"title":"A State-of-the-Art Review on Recent Biomedical Application of Polysaccharide-Based Niosomes as Drug Delivery Systems.","authors":"Andreea-Teodora Iacob, Andra Ababei-Bobu, Oana-Maria Chirliu, Florentina Geanina Lupascu, Ioana-Mirela Vasincu, Maria Apotrosoaei, Bianca-Stefania Profire, Georgiana-Roxana Tauser, Dan Lupascu, Lenuta Profire","doi":"10.3390/polym17111566","DOIUrl":"10.3390/polym17111566","url":null,"abstract":"The development of nanocarriers for drug delivery has drawn a lot of attention due to the possibility for tailored delivery to the ill region while preserving the neighboring healthy tissue. In medicine, delivering drugs safely and effectively has never been easy; therefore, the creation of surfactant-based vesicles (niosomes) to enhance medication delivery has gained attention in the past years. Niosomes (NIOs) are versatile drug delivery systems that facilitate applications varying from transdermal transport to targeted brain delivery. These self-assembling vesicular nano-carriers are formed by hydrating cholesterol, non-ionic surfactants, and other amphiphilic substances. The focus of the review is to report on the latest NIO-type formulations which also include biopolymers from the polysaccharide class, highlighting their role in the development of these drug delivery systems (DDSs). The NIO and polysaccharide types, together with the recent pharmaceutical applications such as ocular, oral, nose-to brain, pulmonary, cardiac, and transdermal drug delivery, are all thoroughly summarized in this review, which offers a comprehensive compendium of polysaccharide-based niosomal research to date. Lastly, this delivery system's limits and prospects are also examined.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":"17 11","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12158076/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144286145","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

Additive Manufacturing of Metal-Infilled Polylactic Acid-Based Sustainable Biocomposites-A Review of Methods, Properties and Applications Abetted with Patent Landscape Analysis. 金属填充聚乳酸基可持续生物复合材料的增材制造——基于专利景观分析的方法、性能和应用综述

IF 4.7 3区工程技术

Polymers Pub Date : 2025-06-04 DOI: 10.3390/polym17111565

Sengottaiyan Sivalingam, Venkateswaran Bhuvaneswari, Lakshminarasimhan Rajeshkumar, Devarajan Balaji

{"title":"Additive Manufacturing of Metal-Infilled Polylactic Acid-Based Sustainable Biocomposites-A Review of Methods, Properties and Applications Abetted with Patent Landscape Analysis.","authors":"Sengottaiyan Sivalingam, Venkateswaran Bhuvaneswari, Lakshminarasimhan Rajeshkumar, Devarajan Balaji","doi":"10.3390/polym17111565","DOIUrl":"10.3390/polym17111565","url":null,"abstract":"Innovations in additive manufacturing (AM) methods represent a significant advancement in manufacturing technology, opening new avenues for creating objects in various shapes and sizes. Fused deposition modeling (FDM) is a specialized AM technique in which computers build layers upon each other to form a complete 3D object. The feasibility of producing metal parts using these methods has been thoroughly analyzed, but the design process has yet to catch up with manufacturing capabilities. Biodegradable aliphatic polyester PLA is derived from lactic acid. To enhance its strength, PLA is combined with metal particles, resulting in versatile property improvements and applications. While the aesthetic and functional qualities of PLA-metal composite filaments are intriguing, they also present difficulties related to extrusion, equipment wear, and maintaining consistent print quality. These challenges could be mitigated, to some extent, with careful tuning and specialized hardware. However, the inferior mechanical properties of bioresorbable PLA filaments highlight the need for the development of infilled PLA filaments to improve strength and other characteristics. This review discusses the 3D printing of PLA infilled with metal particles, various materials used, and their properties as a matter of interest in AM technology. Additionally, the applications of PLA-metal composites, along with their implications, limitations, and prospects, are comprehensively examined in this article. This sets the stage for the development of high-strength, sustainable materials for use in a range of engineering and technology fields.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":"17 11","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12157588/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144286150","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

Biocomposites Based on Biopolyamide with Reduced Water Absorption and Increased Fatigue Strength. 基于生物聚酰胺的生物复合材料，具有降低吸水率和提高疲劳强度。

IF 4.7 3区工程技术

Polymers Pub Date : 2025-06-03 DOI: 10.3390/polym17111559

Patrycja Bazan, Elisabeth Egholm Jacobsen, Anna Olsen, Kristofer Gunnar Paso

{"title":"Biocomposites Based on Biopolyamide with Reduced Water Absorption and Increased Fatigue Strength.","authors":"Patrycja Bazan, Elisabeth Egholm Jacobsen, Anna Olsen, Kristofer Gunnar Paso","doi":"10.3390/polym17111559","DOIUrl":"10.3390/polym17111559","url":null,"abstract":"In this study, composites were developed using a biopolyamide matrix modified with microsilica at varying concentrations (0.5-2% by weight). These composites underwent water absorption analysis, and diffusion velocity was assessed. Based on the findings, hybrid composites incorporating aramid, basalt, and carbon fibers, further modified with 2% microsilica by weight, were fabricated. Investigations into fundamental mechanical properties, microstructure analysis, and accelerated fatigue tests were conducted. The results demonstrate that microsilica positively influences the enhancement of fatigue strength and mechanical properties of the composites. Specifically, microsilica is found to increase the approximate fatigue strength by 15% for the base material modified with 2 wt.% microsilica, by approximately 5% for composites with aramid fiber, and by between 10 and 15% for composites with basalt and carbon fiber. Furthermore, the incorporation of microsilica reduces water absorption in polymer composites, potentially enhancing their durability in humid environments and increasing resistance to degradation.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":"17 11","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12157794/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144286223","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

Sustainable Polypropylene Blends: Balancing Recycled Content with Processability and Performance. 可持续聚丙烯共混物：平衡可回收内容与加工性和性能。

IF 4.7 3区工程技术

Polymers Pub Date : 2025-06-03 DOI: 10.3390/polym17111556

Tatiana Zhiltsova, Mónica S A Oliveira

{"title":"Sustainable Polypropylene Blends: Balancing Recycled Content with Processability and Performance.","authors":"Tatiana Zhiltsova, Mónica S A Oliveira","doi":"10.3390/polym17111556","DOIUrl":"10.3390/polym17111556","url":null,"abstract":"The increasing demand for sustainable materials has renewed interest in recycling polyolefins, particularly polypropylene (PP), due to its widespread use and environmental persistence. Post-consumer recycled polypropylene (PPr), however, often exhibits compromised properties from prior exposure to thermal, oxidative, and mechanical degradation. This study investigates the potential of using post-consumer PPr in melt-blended extrusion formulations with virgin PP (PPv), focusing on how different PPr contents affect processability, thermal stability, oxidative resistance, and mechanical performance. Blends containing 25%, 50%, and 75% PPr, as well as 100% PPr and virgin PP, were evaluated using melt flow index (MFI), differential scanning calorimetry (DSC), oxidation induction time (OIT), thermogravimetric analysis (TGA), and tensile testing. Results show that increasing PPr content improves polymer fluidity and thermal stability under inert conditions but significantly reduces oxidation resistance and ductility. However, the 25% PPr blend demonstrated a favourable balance between performance and recyclability, presenting 96% of the elastic modulus and 101% of the yield strength of PPv. Homogenization by extrusion improved the oxidative stability of recycled PP by 22% compared to its non-extruded form. These findings support the use of low-to-moderate levels of PPr in virgin PP for applications requiring predictable and tunable performance. contributing to circular economy goals.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":"17 11","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12158057/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144286341","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

Oxidative Decomposition of Poly(phenylene sulfide) Composites Under Fast Elevation of Temperature. 快速升温条件下聚苯硫醚复合材料的氧化分解。

IF 4.7 3区工程技术

Polymers Pub Date : 2025-06-03 DOI: 10.3390/polym17111560

Aurélie Bourdet, Yann Carpier, Eric Dargent, Benoit Vieille, Nicolas Delpouve

{"title":"Oxidative Decomposition of Poly(phenylene sulfide) Composites Under Fast Elevation of Temperature.","authors":"Aurélie Bourdet, Yann Carpier, Eric Dargent, Benoit Vieille, Nicolas Delpouve","doi":"10.3390/polym17111560","DOIUrl":"10.3390/polym17111560","url":null,"abstract":"The thermal resistance of carbon fiber-reinforced poly(phenylene sulfide) to harsh oxidative conditions is investigated through thermogravimetric experiments performed in an oxygen atmosphere. While these materials usually show great resistance against thermal decomposition in a nitrogen atmosphere, the experiments in oxygen reveal the total decomposition of both the matrix and the carbon fibers. The Gram-Schmidt signal, obtained by coupling thermogravimetric analysis in standard conditions with Fourier-transform infrared spectroscopy, exhibits multiple events, evidencing that the decomposition proceeds through distinct stages. The first step characterizes the char formation, while the second relates to its oxidative decomposition. A third step, only observed for composites, is interpreted as the signature of the oxidative decomposition of carbon fibers. To mimic the sudden elevation of temperature encountered during a fire, the analyses are performed at rates of up to 500 K min-1. These specific experimental conditions reveal a complex dependence of the thermogravimetric signature on the heating rate. Independent of the atmosphere, nitrogen or oxygen, the characteristic temperature of decomposition follows a bell-shape trend, resulting from the combination of lag effects and thermal-conductivity limitations. Additionally, the increase of the heating rate causes the Gram-Schmidt signal to evolve toward a broad peak with indistinct events. To investigate whether these changes affect the decomposition products, the infrared spectra, continuously recorded to probe the whole decomposition, are compared with those from the database. The char formation is characterized by the production of sulfur dioxide, while carbon dioxide is the main product emitted during both char and fiber oxidative decomposition. Owing to the merging of the decomposition stages, sulfur-dioxide detection is partly supplanted by that of carbon dioxide under fast elevations of temperature.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":"17 11","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12157743/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144286296","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

Inclusion of Magnesium- and Strontium-Enriched Bioactive Glass into Electrospun PCL Scaffolds for Tissue Regeneration. 富镁富锶生物活性玻璃包埋于电纺丝PCL支架中用于组织再生。

IF 4.7 3区工程技术

Polymers Pub Date : 2025-06-03 DOI: 10.3390/polym17111555

Francesco Gerardo Mecca, Nathália Oderich Muniz, Devis Bellucci, Cécile Legallais, Timothée Baudequin, Valeria Cannillo

{"title":"Inclusion of Magnesium- and Strontium-Enriched Bioactive Glass into Electrospun PCL Scaffolds for Tissue Regeneration.","authors":"Francesco Gerardo Mecca, Nathália Oderich Muniz, Devis Bellucci, Cécile Legallais, Timothée Baudequin, Valeria Cannillo","doi":"10.3390/polym17111555","DOIUrl":"10.3390/polym17111555","url":null,"abstract":"Bioactive glass (BG) is a promising material known for its osteogenic, osteoinductive, antimicrobial, and angiogenic properties. For this reason, melt-quench-derived BG powders embedded into composite electrospun poly(ε-caprolactone) (PCL) mats represent an interesting option for the fabrication of bioactive scaffolds. However, incorporating BG into nano-/micro-fibers remains challenging. Our research focused on integrating two BG compositions into the mat structure: 45S5 and 45S5_MS (the former being a well-known, commercially available BG composition, and the latter a magnesium- and strontium-enriched composition based on 45S5). Both BG types were added at concentrations of 10 wt.% and 20 wt.%. A careful grinding process enabled effective dispersion of BG into a PCL solution, resulting in fibers ranging from 500 nm to 2 µm in diameter. The mats' mechanical properties were not hindered by the inclusion of BG powder within the fibrous structure. Furthermore, our results indicate that BG powders were successfully incorporated into the scaffolds, not only preserving their properties but potentially enhancing their biological performance compared to unloaded PCL electrospun scaffolds. Our findings indicate proper cell differentiation and proliferation, supporting the potential of these devices for tissue regeneration applications.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":"17 11","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12158232/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144286322","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

Surface Morphology and Degradation of Poly[(R)-3-Hydroxybutyrate]-block-Poly(ε-Caprolactone) and Poly[(R)-3-Hydroxybutyrate]-block-Poly(l-Lactide) Biodegradable Diblock Copolymers. 聚[(R)-3-羟基丁酸酯]-嵌段聚（ε-己内酯）和聚[(R)-3-羟基丁酸酯]-嵌段聚（l-丙交酯）可生物降解双嵌段共聚物的表面形貌和降解

IF 4.7 3区工程技术

Polymers Pub Date : 2025-06-03 DOI: 10.3390/polym17111558

Ayan Bartels-Ellis, Senri Hayashi, Tomohiro Hiraishi, Takeharu Tsuge, Hideki Abe

{"title":"Surface Morphology and Degradation of Poly[(R)-3-Hydroxybutyrate]-block-Poly(ε-Caprolactone) and Poly[(R)-3-Hydroxybutyrate]-block-Poly(l-Lactide) Biodegradable Diblock Copolymers.","authors":"Ayan Bartels-Ellis, Senri Hayashi, Tomohiro Hiraishi, Takeharu Tsuge, Hideki Abe","doi":"10.3390/polym17111558","DOIUrl":"10.3390/polym17111558","url":null,"abstract":"Bacterially produced poly[(R)-3-hydroxybutyrate] (P3HB) was subjected to an alcoholysis reaction to produce low-molecular-weight (Mn ≈ 10,000 g mol-1) hydroxy-terminated P3HB (LMPHB). Using diethyl zinc as a catalyst, LMPHB was reacted with the cyclic monomers ε-caprolactone and l-lactide in separate ring-opening polymerization (ROP) reactions to produce PHB-b-PCL (PHBCL) and PHB-b-PLA (PHBLA) AB-type crystalline-crystalline diblock copolymers with varying PCL and PLA block lengths. 1H NMR and GPC were used to confirm the structure of the polymers. DSC was used to measure the thermal properties as well as assessing crystallization. A single-shifting Tg for PHBLA showed the two blocks to be miscible in the melt. The TGA results indicate enhanced thermal stability over the homopolymer P3HB. A study of the crystallization was undertaken by combining WAXD, a second DSC heating regime, and POM. POM showed that the crystallization in PHBCL to be dependent on the crystallization temperature more so than PHBLA, whose composition appeared to be the more definitive factor determining the spherulitic morphology. The results informed the crystallization temperatures used in the production of the melt-crystallized thin films that were imaged using AFM. AFM images showed unique surface morphologies dependent on the diblock copolymer composition, block length, and crystallization temperature. Finally, the enzymatic degradation studies showed these unique surface morphologies to influence how these block copolymers were degraded by enzymes.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":"17 11","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12157110/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144286339","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 Processing Parameters on the Printability and Mechano-Biological Properties of Polycaprolactone-Bioactive Glass Composites for 3D-Printed Scaffold Fabrication. 工艺参数对3d打印支架用聚己内酯-生物活性玻璃复合材料可打印性和力学生物学性能的影响。

IF 4.7 3区工程技术

Polymers Pub Date : 2025-06-03 DOI: 10.3390/polym17111554

José I Contreras Raggio, Miguel Pardo, Pablo Núñez, Carola Millán, Gilberto Siqueira, Humberto Palza, Juan F Vivanco, Ameet K Aiyangar

{"title":"Effect of Processing Parameters on the Printability and Mechano-Biological Properties of Polycaprolactone-Bioactive Glass Composites for 3D-Printed Scaffold Fabrication.","authors":"José I Contreras Raggio, Miguel Pardo, Pablo Núñez, Carola Millán, Gilberto Siqueira, Humberto Palza, Juan F Vivanco, Ameet K Aiyangar","doi":"10.3390/polym17111554","DOIUrl":"10.3390/polym17111554","url":null,"abstract":"Direct ink writing (DIW) is an attractive, extrusion-based, additive manufacturing method for fabricating scaffold structures with controlled porosity using custom composite inks. Polycaprolactone-bioactive glass (PCL-BG) inks have gained attention for bone applications, but optimizing the formulation and fabrication of PCL-BG-based inks for improved printability and desired mechano-biological properties remains a challenge. This study employs a two-step design to systematically evaluate the effect of three factors in terms of PCL-BG composite printability and mechano-biological properties: ink preparation (acetone or dichloromethane (DCM) as the solvent, and mechanical compounding), the extrusion temperature (90 °C, 110 °C, and 130 °C), and the BG content (0%, 10%, and 20% BG). Pure PCL was used as the control. Rheological, calorimetric, and thermo-gravimetric analyses were conducted before printing. Cylindrical scaffolds and solid wells were printed to evaluate the printability, mechanical properties, and cytocompatibility. The scaffold porosity and pore size were carefully examined. Mechanical tests demonstrated that composite formulations with added BG and higher printing temperatures increased the elastic modulus and yield strength. However, PCL-DCM-BG combinations exhibited increased brittleness with higher BG content. Despite concerns about the toxic solvent DCM, the cytocompatibility was comparable to pure PCL for all ink preparation methods. The results suggest that the interaction between the ink preparation solvent, the BG content, and the printing temperature is critical for material design and fabrication planning in bone tissue engineering applications, providing insights into optimizing PCL-BG composite ink formulations for 3D printing in bone tissue engineering.","PeriodicalId":20416,"journal":{"name":"Polymers","volume":"17 11","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12158094/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144286284","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