Application of Additive Manufacturing in the Development of Polymeric Bioresorbable Cardiovascular Stents: A Review DOI Creative Commons
Farhana Yasmin, Ana Vafadar, Majid Tolouei‐Rad

и другие.

Advanced Materials Technologies, Год журнала: 2024, Номер unknown

Опубликована: Июль 2, 2024

Abstract Polymeric vascular bioresorbable stents (BRSs) have been widely used for the treatment of coronary artery diseases. While additive manufacturing (AM) is changing landscape healthcare sector by enabling realization patient‐specific with highly complex structures. There are, however, challenges associated use polymeric BRS, particularly in‐stent restenosis (ISR), related to its poor mechanical properties. Therefore, aim this review provide an overview recent advancements in development BRSs designed meet both and biological requirements. First, biopolymers as well shape memory polymers (SMPs) that are suitable highlighted briefly described. Second, different types designing structures addition introducing effective metamaterials, e.g., negative Poisson ratio (NPR) addressed. Subsequently, AM methods currently being fabricate BRSs, discussed compared conventional fabrication methods. Lastly, future directions research proposed relation existing a new generation BRSs. Overall, paper serves benchmark cardiovascular applications, especially order obtain clinically viable selecting polymers, designs, technologies.

Язык: Английский

Direct Pellet Three-Dimensional Printing of Polybutylene Adipate-co-Terephthalate for a Greener Future DOI Open Access
Armin Karimi, Davood Rahmatabadi, Mostafa Baghani

и другие.

Polymers, Год журнала: 2024, Номер 16(2), С. 267 - 267

Опубликована: Янв. 18, 2024

The widespread use of conventional plastics in various industries has resulted increased oil consumption and environmental pollution. To address these issues, a combination plastic recycling the biodegradable is essential. Among polymers, poly butylene adipate-co-terephthalate (PBAT) attracted significant attention due to its favorable mechanical properties biodegradability. In this study, we investigated potential using PBAT for direct pellet printing, eliminating need filament conversion. determine optimal printing temperature, three sets tensile specimens were 3D-printed at varying nozzle temperatures, their microstructure analyzed. Additionally, dynamic thermal analysis (DMTA) was conducted evaluate behavior printed PBAT. Furthermore, designed two structures with different infill percentages (40% 60%) assess compressive strength energy absorption properties. DMTA revealed that PBAT's glass-rubber transition temperature approximately -25 °C. Our findings demonstrate increasing enhances Notably, highest 200 °C yielded remarkable results, an elongation 1379% 7.5 MPa. Moreover, 60% density exhibited superior (1338 KPa) compared those 40% (1306 KPa). SEM images showed increase quality print greatly improved, it difficult find microholes or even layered structure sample

Язык: Английский

Процитировано

37
Modified re-entrant auxetic metamaterials with energy absorption enhancement DOI
Ehsan Etemadi,

Alireza M.M. Zamani,

Fabrizio Scarpa

и другие.

Materials Today Communications, Год журнала: 2024, Номер 38, С. 108079 - 108079

Опубликована: Янв. 11, 2024

Язык: Английский

Процитировано

31
Design, processing, 3D/4D printing, and characterization of the novel PETG–PBAT blends DOI

Saeed J. A. Ali,

Davood Rahmatabadi, Mostafa Baghani

и другие.

Journal of Materials Science, Год журнала: 2024, Номер 59(20), С. 9150 - 9164

Опубликована: Май 1, 2024

Язык: Английский

Процитировано

19
Enhancing Polylactic Acid (PLA) Performance: A Review of Additives in Fused Deposition Modelling (FDM) Filaments DOI Open Access

Ioan Plamadiala,

Cătălin Croitoru, Mihai Alin Pop

и другие.

Polymers, Год журнала: 2025, Номер 17(2), С. 191 - 191

Опубликована: Янв. 14, 2025

This review explores the impact of various additives on mechanical properties polylactic acid (PLA) filaments used in Fused Deposition Modeling (FDM) 3D printing. While PLA is favored for its biodegradability and ease use, inherent limitations strength heat resistance necessitate enhancements through additives. The natural synthetic fibers, inorganic particles, nanomaterials properties, printability, overall functionality composites was examined, indicating that fiber reinforcements, such as carbon glass significantly enhance tensile stiffness, while fibers contribute to sustainability but may compromise stability. Additionally, inclusion particulate fillers like calcium carbonate improves dimensional stability although larger particles can lead agglomeration issues. study highlights potential improved performance specific applications acknowledging need further investigation into optimal formulations processing conditions.

Язык: Английский

Процитировано

7
Influence of Thermoplastic Polyurethane (TPU) and Printing Parameters on The Thermal and Mechanical Performance of Polylactic Acid (PLA) / Thermoplastic Polyurethane (TPU) Polymer DOI Creative Commons

Muhammad Nafiz Hamidi,

Jamaluddin Abdullah, Abdus Samad Mahmud

и другие.

Polymer Testing, Год журнала: 2025, Номер unknown, С. 108697 - 108697

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

4
The Influence of the Layer Height and the Filament Color on the Dimensional Accuracy and the Tensile Strength of FDM-Printed PLA Specimens DOI Open Access
Doina Frunzăverde, Vasile Cojocaru,

Nicoleta Bacescu

и другие.

Polymers, Год журнала: 2023, Номер 15(10), С. 2377 - 2377

Опубликована: Май 19, 2023

Among the FDM process variables, one of less addressed in previous research is filament color. Moreover, if not explicitly targeted, color usually even mentioned. Aiming to point out if, and what extent, PLA filaments influences dimensional precision mechanical strength prints, authors present carried experiments on tensile specimens. The variable parameters were layer height (0.05 mm, 0.10 0.15 0.20 mm) material (natural, black, red, grey). experimental results clearly showed that an influential factor for accuracy as well printed parts. two way ANOVA test performed revealed strongest effect was exerted by (η2 = 97.3%), followed 85.5%) interaction between 80.0%). Under same printing conditions, best ensured black (0.17% width deviations, respectively 5.48% deviations), whilst grey highest ultimate values (between 57.10 MPa 59.82 MPa).

Язык: Английский

Процитировано

35
Degradation assessment of Mg-Incorporated 3D printed PLA scaffolds for biomedical applications DOI Creative Commons
Fawad Ali, Sumama Nuthana Kalva, Kamal H. Mroué

и другие.

Bioprinting, Год журнала: 2023, Номер 35, С. e00302 - e00302

Опубликована: Авг. 11, 2023

Polylactic acid (PLA)/Magnesium (Mg)-based composites exhibit great potential for applications in bone regeneration and tissue engineering. PLA is a biodegradable biocompatible polymer, that has the ability to be easily shaped into diverse structures like scaffolds, films, fibers. However, its inherent low biodegradability limits applicability On other hand, magnesium, metal known good osteoconductivity, well-suited In this study, we fabricated characterized composite material of Mg/PLA with 5, 10, 15 wt%Mg alloy (AZ61), which was subsequently 3D printed. The incorporation Mg particles matrix offers solution overcome biodegradation limitations typically associated PLA. Moreover, it helps counteract negative consequences related rapid degradation Mg, such as alkalinization excessive release H2. Additionally, change pH values changes mass during vitro indicated addition effectively counteracted acidic byproducts generated by Furthermore, X-Ray photoelectron spectroscopy (XPS) Fourier transform infrared (FT-IR) were utilized investigate while thermogravimetric analysis (TGA) differential scanning calorimetry (DSC) used compare contrast thermal properties composites. Our findings demonstrate significantly influences notably accelerates degradation, noticeable influence on cell adhesion.

Язык: Английский

Процитировано

33
Mechanical, thermal properties and shape memory behaviors of PLA/PCL/PLA‐g‐GMA blends DOI

Gaoyuan Ye,

Tongfei Gu,

Boyuan Chen

и другие.

Polymer Engineering and Science, Год журнала: 2023, Номер 63(7), С. 2084 - 2092

Опубликована: Май 16, 2023

Abstract To improve the toughness of polylactic acid (PLA), in this research, a tough polymer polycaprolactone (PCL) was combined with PLA to prepare blends, and compatibilizer glycidyl methacrylate grafted (PLA‐g‐GMA) produced enhance compatibility PLA/PCL blend. Compared blend, compatibilized blend exhibited lower melting temperature greater thermal stability. The tensile test indicates that addition greatly improved Particularly, elongation at break 6 wt% PLA‐g‐GMA increased 370% reached about 66 times neat PLA. In addition, blends have good shape memory performance. research provides simple feasible method overcome brittleness PLA, supplying new strategy modify

Язык: Английский

Процитировано

28
Effects of TPU on the mechanical properties, fracture toughness, morphology, and thermal analysis of 3D‐printed ABS‐TPU blends by FDM DOI Creative Commons
Kianoosh Soltanmohammadi, Davood Rahmatabadi,

Mohammad Aberoumand

и другие.

Journal of Vinyl and Additive Technology, Год журнала: 2024, Номер 30(4), С. 958 - 968

Опубликована: Фев. 20, 2024

Abstract In this paper, blends of ABS‐TPU with two different weight percentages TPU were prepared using fused deposition modeling technology. The effect adding on the fracture toughness ABS and mechanical properties was comprehensively studied. Tensile, compression, toughness, shear tests conducted 3D‐printed samples. Thermal microstructural analyses performed dynamic thermal analysis (DMTA), scanning electron microscope (SEM). DMTA results showed that decreased storage modulus glass transition temperature ABS, as well its peak intensity. test strength but increased formability elongation Fracture addition maximum force needed for a crack to initiate. required initiation from 568.4 N neat 335.3 ABS80 123.2 ABS60. ABS60 blend exhibited highest against growth, indicating can change behavior brittle ductile. Shear SEM images also good adhesion between printed samples all three specimens, their printability. Adding resulted in reduction size number voids holes layers. Highlights Melt mixing, filament preparation, 3D printing blends. Investigation properties, microstructure, toughness. Improved resistance growth by ABS. Improving printability reducing microholes compared Achieving wide range various applications.

Язык: Английский

Процитировано

16
Evaluating Benchtop Additive Manufacturing Processes Considering Latest Enhancements in Operational Factors DOI Open Access
Antreas Kantaros, Florian Ion Tiberiu Petrescu,

Konstantinos Brachos

и другие.

Processes, Год журнала: 2024, Номер 12(11), С. 2334 - 2334

Опубликована: Окт. 24, 2024

With the evolution of additive manufacturing technologies, concerning their material processing techniques, range choices and deposition speed, 3D printers are extensively employed in academia industry for a number purposes. It is no longer uncommon to have portable, desktop printer build specific designs matter minutes or hours. The functionality, costs, materials applications differ. Among several with variety characteristics, it might be challenging choose which one optimal intended uses. In this study, commercially available thermoplastic photopolymer resin presented compared user selection. This article intends provide end-users fundamental information guidelines via comparison 3D-printing technologies technical enabling them assess select appropriate applications.

Язык: Английский

Процитировано

13