A 3D-Printed Scaffold for Repairing Bone Defects

Polymers, Год журнала: 2024, Номер 16(5), С. 706 - 706

Опубликована: Март 5, 2024

The treatment of bone defects has always posed challenges in the field orthopedics. Scaffolds, as a vital component tissue engineering, offer significant advantages research and clinical defects. This study aims to provide an overview how 3D printing technology is applied production repair scaffolds. Depending on materials used, 3D-printed scaffolds can be classified into two types: single-component composite We have conducted comprehensive analysis material composition, characteristics printing, performance, advantages, disadvantages, applications for each scaffold type. Furthermore, based current status progress, we suggestions future this area. In conclusion, review acts valuable reference advancing

Язык: Английский

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Eco-Friendly Packaging Innovations: Integrating Natural Fibers and ZnO Nanofillers in Polylactic Acid (PLA) Based Green Composites - A Review

Polymer-Plastics Technology and Materials, Год журнала: 2024, Номер 63(12), С. 1645 - 1681

Опубликована: Май 27, 2024

The past few years have witnessed a significant surge in research focused on sustainable food packaging, driven by consumer ecological awareness. Food packaging can be categorized as functional, which requires resistance to oxygen, water, and bacteria, high-performance, demands strong mechanical properties. A notable trend has resulted the emergence of green composites, due their intrinsic bio-based biodegradable nature. Among these there been growing interest utilizing poly (lactic acid) (PLA)-based composites for high-performance particularly through incorporation natural fibers reinforcement. In parallel, use zinc oxide (ZnO) nanofillers PLA-based gained attention field functional packaging. However, noteworthy gap persists literature concerning materials demanding both properties, with combinations ZnO-functionalizing fillers within PLA matrix. This review intends explore effects ZnO films, well effectiveness reinforcements matrices. also emphasizes need future integrating matrix active rigid

Язык: Английский

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Selection and Optimization of Carbon-Reinforced Polyether Ether Ketone Process Parameters in 3D Printing—A Rotating Component Application

Polymers, Год журнала: 2024, Номер 16(10), С. 1443 - 1443

Опубликована: Май 20, 2024

The selection of process parameters is crucial in 3D printing for product manufacturing. These govern the operation production machinery and influence mechanical properties, time, other aspects final product. optimal parameter settings vary depending on application. This study identifies most suitable cluster producing rotating components, specifically impellers, using carbon-reinforced Polyether Ether Ketone (CF-PEEK) thermoplastic filament. A mathematical programming technique a rating method was employed to select appropriate parameters. research concludes that an infill density 70%, layer height 0.15 mm, speed 60 mm/s, platform temperature 195 °C, extruder 445 travel 95 mm/s are manufacturing components PEEK material.

Язык: Английский

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Challenges to Improve Extrusion‐Based Additive Manufacturing Process of Thermoplastics toward Sustainable Development

Macromolecular Rapid Communications, Год журнала: 2024, Номер 45(17)

Опубликована: Май 31, 2024

Abstract This review aims to present the different approaches lessen environmental impact of extrusion‐based additive manufacturing (MEX) process thermoplastic‐based resins and protect ecosystem. The benefits drawbacks each alternative, including use biomaterials or recycled materials as feedstock, energy efficiency, polluting emissions reduction, have been examined. First, technological option using a pellet‐fed printer was compared filament‐fed printer. Then, common biopolymers utilized in MEX applications are discussed, along with methods for improving mechanical properties associated printed products. introduction natural fillers thermoplastic biocomposite filaments proposed improve specific performance items, highlighting numerous challenges related their extrusion. Various polymers derived from recycling presented feeding raw printers reduce waste accumulation, showing inferior qualities resulting goods when products made virgin materials. Finally, consumption released into atmosphere during printing potential both aspects be controlled through material selection operating conditions.

Язык: Английский

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Correlation between Infill Percentages, Layer Width, and Mechanical Properties in Fused Deposition Modelling of Poly-Lactic Acid 3D Printing

Machines, Год журнала: 2023, Номер 11(10), С. 950 - 950

Опубликована: Окт. 12, 2023

The field of additive manufacturing (AM) has seen a transformation in the production intricate and complex parts for various applications. Fused Deposition Modelling (FDM), among AM techniques, garnered significant attention, particularly fields like fibre-reinforced composites (FRC). In this study, world FDM-printed Polylactic Acid (PLA) components is explored, with focus on how mechanical properties are influenced by infill percentages layer widths. Through utilisation Response Surface Methodology (RSM), optimisation FDM-PLA 3D printing wide range biomaterial applications achieved, along unveiling potential remarkable improvements performance. Notably, 91% reduction surface roughness PLA was accompanied an impressive 25.6% 34.1% enhancement tensile strength Young’s modulus composites, respectively. This work, positioned at crossroads FDM, lays groundwork substantial advancements realm manufacturing.

Язык: Английский

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Polymeric composites in extrusion‐based additive manufacturing: a systematic review

Polymer Composites, Год журнала: 2024, Номер 45(8), С. 6741 - 6770

Опубликована: Фев. 29, 2024

Abstract Solid composites used in material extrusion additive manufacturing have experienced considerable expansion over the past 5 years, incorporating functional properties into 3D‐printed objects. This paper presents a systematic review that aims to: (I) analyze current state of development field; (II) quantify and categorize adopted polymeric matrices, reinforcing materials, feedstock shapes, characterization strategies, mechanisms; (III) identify applications, limitations, trends for future research. The PRISMA statement was followed databases Scopus, Web Science, PubMed were consulted. Among 116 included studies, use customized filaments surpassed commercially available ones, with particulate matter being most common form filler when melt‐mixed polymer. Polyamide is widely matrix (30.3%), by PLA (22.0%) ABS (17.4%). In terms reinforcements, carbon fiber (32.4%), glass (12.5%), ceramics (12.5%) compose podium as frequently used, nanofillers receiving increasing attention. conducted analysis, no standardized protocols identified clearly encompassed entire process from formulation to technical prototype fabrication. At last, recycling, exploration biodegradable 4D printing main opportunities Highlights Reinforced polymers enable enhancement parts. Composite usually formulated mixed before printing. 3D printers filament‐ or screw‐based mechanisms been used. Mechanical morphological analyses are characterization. No applications employed real‐world scenarios.

Язык: Английский

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3D Non-Newtonian deposition flow and thermal simulations to evaluate the scale-up potential for material extrusion of single walled ABS parts with overhang

Additive manufacturing, Год журнала: 2024, Номер 86, С. 104191 - 104191

Опубликована: Апрель 1, 2024

Язык: Английский

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3D Printing in Healthcare: A Review on Drug Printing, Challenges and Future Perspectives

Materials Today Communications, Год журнала: 2024, Номер 40, С. 110199 - 110199

Опубликована: Авг. 1, 2024

Язык: Английский

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Rheological Characterization and Printability of Sodium Alginate–Gelatin Hydrogel for 3D Cultures and Bioprinting

Biomimetics, Год журнала: 2025, Номер 10(1), С. 28 - 28

Опубликована: Янв. 4, 2025

The development of biocompatible hydrogels for 3D bioprinting is essential creating functional tissue models and advancing preclinical drug testing. This study investigates the formulation, printability, mechanical properties, biocompatibility a novel Alg-Gel hydrogel blend (alginate gelatin) use in extrusion-based bioprinting. A range compositions were evaluated their rheological behavior, including shear-thinning storage modulus, compressive which are crucial maintaining structural integrity during printing supporting cell viability. printability assessment 7% alginate-8% gelatin demonstrated that 27T tapered needle achieved highest normalized Printability Index (POInormalized = 1), offering narrowest strand width (0.56 ± 0.02 mm) accuracy (97.2%) at lowest pressure (30 psi). In contrast, 30R needle, with smallest inner diameter (0.152 (80 psi), resulted widest (0.70 0.01 (88.8%), resulting POInormalized 0.274. 30T 27R needles moderate performance, values 0.758 0.558, respectively. optimized alginate 8% favorable strength, compatibility MDA-MB-213 breast cancer cells, exhibiting high proliferation rates minimal cytotoxicity over 2-week culture period. formulation offers balanced approach, providing sufficient viscosity precision while minimizing shear stress to preserve health. work lays groundwork future advancements bioprinted models, contributing more effective tools screening personalized medicine.

Язык: Английский

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Predicting Mechanical Properties of FDM‐Produced Parts Using Machine Learning Approaches

Journal of Applied Polymer Science, Год журнала: 2025, Номер unknown

Опубликована: Фев. 23, 2025

ABSTRACT Additive manufacturing (AM), especially fused deposition modeling (FDM), has been widely used in industrial production processes recent years. The mechanical properties of parts produced by FDM can be predicted through the correct selection printing parameters. In this study, 25 machine learning (ML) algorithms were to predict (hardness, tensile strength, flexural and surface roughness) acrylonitrile butadiene styrene (ABS) samples fabricated FDM. Experiments conducted using three different layer thicknesses (100, 150, 200 μm), infill densities (50%, 75%, 100%), nozzle temperatures (220°C, 230°C, 240°C). effects parameters on investigated analysis variance (ANOVA). This results indicated that density had most significant effect hardness (55.56%), strength (80.02%), (77.13%). addition, thickness was identified as influential parameter roughness, with an 70.89%. prediction performance ML evaluated based mean absolute error (MAE), root squared error, R ‐squared ( 2 ) values. KSTAR algorithm best both MAE values 0.006 0.009, respectively, value up 0.99. For MLP determined successful method, achieving high accuracy > 0.99) for properties. comparison graphs between actual showed overall accuracy, a particularly strong agreement hardness, roughness. study provided recommendations predicting 3D process these findings.

Язык: Английский

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