Bioprinting, Journal Year: 2025, Volume and Issue: unknown, P. e00406 - e00406
Published: March 1, 2025
Language: Английский
Polymer Degradation and Stability, Journal Year: 2024, Volume and Issue: 228, P. 110902 - 110902
Published: June 25, 2024
Fused Deposition Modelling (FDM), a prevalent additive manufacturing technique utilising polymeric materials, facilitates intricate geometric customisation and rapid prototyping. The ongoing development of FDM technology emphasises the importance thermal characteristics FDM-printed which are essential for various applications, including aerospace biomedical engineering. properties covering wide range thermoplastic polymers composites, were examined in this review. Despite versatility technology, challenges persist 3D printed parts, manifesting as anisotropy, voids, sub-optimal conductivity, thereby impeding performance. Achieving precise control over printing parameters such nozzle temperature, layer height, speed is pivotal optimising properties. Additionally, controlled treatments, like annealing, offer avenues manipulating crystalline structure components to enhance conductivity. By elucidating effects reinforcements, article aims provide insights into potential enhancements adjustments developing thermally resistant FDM-based materials.
Language: Английский
Citations
24
Polymer Testing, Journal Year: 2022, Volume and Issue: 117, P. 107859 - 107859
Published: Nov. 4, 2022
Additive manufacturing (AM, also commonly termed 3D printing) is progressing from being a rapid prototyping tool to serving as pillar of the Industry 4.0 revolution. Thanks their low density and ease printing, polymers are receiving increasing interest for fabrication structural lightweight parts. Nonetheless, lack appropriate standards, specifically conceived consistently verify tensile properties polymer parts benchmark them against conventional products, major obstacle wider uptake AM in industry. After reviewing standardisation needs with focus on mechanical testing, paper closely examines hurdles that encountered when existing standards applied measure fabricated by fused filament (FFF, aka deposition modeling, FDM), which presently most popular material extrusion technique. Existing unable account numerous printing parameters govern response FFF Moreover, literature suggests raster- layer-induced anisotropic behaviour complicated interplay between features at different length scales (micro/meso/macro-structure) undermine pre-existing concepts regarding specimen geometry classical theories size effect, ultimately jeopardise transferability test Finally, statistical analysis poly(lactic acid) (PLA) specimens printed according (ASTM D638 type I ASTM D3039) sizes provides experimental evidence confirm literature-based argumentation. Ultimately, survey, supported results, demonstrates that, until dedicated become available, testing should be prudence. Whilst not specified set-up fully reported ensure repeatability rectangular geometries preferred dumbbell-like ones order avoid premature failure fillets, changed arbitrarily.
Language: Английский
Citations
53
Composites Part A Applied Science and Manufacturing, Journal Year: 2025, Volume and Issue: unknown, P. 108752 - 108752
Published: Jan. 1, 2025
Language: Английский
Citations
1
Additive manufacturing, Journal Year: 2025, Volume and Issue: unknown, P. 104762 - 104762
Published: March 1, 2025
Language: Английский
Citations
1
Polymers, Journal Year: 2023, Volume and Issue: 15(21), P. 4219 - 4219
Published: Oct. 25, 2023
Additive manufacturing (AM, aka 3D printing) is generally acknowledged as a “green” technology. However, its wider uptake in industry largely relies on the development of composite feedstock for imparting superior mechanical properties and bespoke functionality. Composite materials are especially needed polymer AM, given otherwise poor performance most parts load-bearing applications. As drawback, shift from mono-material to may worsen environmental footprint AM. This perspective aims discuss this chasm between advantage embedding advanced functionality, disadvantage causing harm environment. Fused filament fabrication (FFF, fused deposition modelling, FDM) analysed here case study account unparalleled popularity. FFF, which belongs material extrusion (MEX) family, presently widespread AM technique industrial, educational, recreational On one hand, FFF has already transitioned “from lab fab” finally community, with far-reaching implications sustainability. other thermoplastic-based, hence highly amenable recycling. The literature shows that recycled thermoplastic such poly(lactic acid) (PLA), acrylonitrile-butadiene-styrene (ABS), polyethylene terephthalate (PET, or glycol-modified form PETG) can be used printing by printed objects when they at end life. Reinforcements/fillers also obtained materials, help valorise waste by-products wide range industries (for example, paper, food, furniture) agriculture. Increasing attention being paid recovery carbon fibres aviation), reuse glass fibre-reinforced polymers end-of-life wind turbines). Although technical challenges economical constraints remain, adoption recycling strategies appears essential limiting impact reducing depletion natural resources, cutting down volume mitigating dependency petrochemicals.
Language: Английский
Citations
17
Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(3), P. 112474 - 112474
Published: March 19, 2024
The inefficient management of wastes recovered from electric and electronic apparatuses (the so-called WEEE or e-waste) has become a severe global concern in the last years, since indiscriminate accumulation containing hazardous material poses serious risks for environmental, as well human health. Despite continuous development innovative efficient technologies mechanical recycling plastics, effective re-utilization these fractions is often limited by their poor value-added. In this work, we propose strategy valorization typical plastic stream small appliances (mainly composed on polypropylene filled with talc particles) through formulation filaments suitable Fused Filament Fabrication (FFF) 3D printing processes. Preliminary spectroscopic analyses plastics allowed separating sample two streams, according to different content talc. Both streams were first characterized rheological point view, aiming at assessing printability. Then, properties morphology (obtained after close optimization extrusion conditions) evaluated; obtained results indicated achievement regular geometry comparable those commercial filaments. Finally, printed specimens showed satisfactory quality terms resolution definition, demonstrating possibility profitably enhancing value-added using them feedstock produce sustainable
Language: Английский
Citations
8
Journal of Drug Delivery Science and Technology, Journal Year: 2024, Volume and Issue: 98, P. 105839 - 105839
Published: June 5, 2024
Language: Английский
Citations
7
ACS Omega, Journal Year: 2024, Volume and Issue: 9(27), P. 29186 - 29204
Published: June 28, 2024
3D printing is a promising technique for producing bone implants, but there still need to adjust efficiency, facilitate production, and improve biocompatibility. Porous materials have proven positive effect on the regeneration of tissue, their production associated with numerous limitations. In this work, we described simple method polymer or polymer-ceramic filaments 3D-printing scaffolds by adding micrometer-scale porous structures scaffold surfaces. Scaffolds included polycaprolactone (PCL) as primary polymer, β-tricalcium phosphate (β-TCP) ceramic filler, poly(ethylene glycol) (PEG) porogen. The pressurized filament extrusion gave flexible composed PCL, β-TCP, PEG, which are ready use in fused fabrication (FFF) printers. Washing 3D-printed ethanol solution removed PEG revealed microporous structure particles scaffold's Furthermore, exhibit good precision, no cytotoxic properties, highly impact MG63 cell alignment. Although combining β-TCP quite popular, presented allows well-organized without advanced equipment, produced can be used print commercially available printer.
Language: Английский
Citations
7
Rapid Prototyping Journal, Journal Year: 2024, Volume and Issue: 30(11), P. 87 - 122
Published: April 25, 2024
Purpose The purpose of this paper is to review cases artificial reefs built through additive manufacturing (AM) technologies and analyse their ecological goals, fabrication process, materials, structural design features implementation location determine predominant parameters, environmental impacts, advantages, limitations. Design/methodology/approach analysed 16 from both temperate tropical regions. These were categorised based on the AM process used, mortar material used (crucial for biological applications), implementation. parameters are assessed how effectively designs meet stipulated demonstrate potential in comparison conventional methods preference locations these implementations. Findings overview revealed that dominant reef occurs Mediterranean Atlantic Seas, accounting 24%. remaining Australian Sea (20%), South Asia (12%), Persian Gulf Pacific Ocean, with 8%, Indian 4% all studied. It was concluded fused filament fabrication, binder jetting extrusion represent main processes build reefs. Cementitious ceramics, polymers geopolymer formulations incorporating aggregates mineral residues, wastes pozzolan reduce promote circular economy be more beneficial marine ecosystems. evaluation ranking well materials align demonstrating five ranked high effectiveness, ten projects moderate effectiveness one case low effectiveness. Originality/value represents an innovative method restoration management. offers a rapid prototyping technique validation enables creation highly complex shapes habitat diversification while diverse range benefit species’ habitats.
Language: Английский
Citations
5
Regenerative Engineering and Translational Medicine, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 18, 2024
Language: Английский
Citations
5