| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Biomaterials for 3D Printing of Scaffolds and Tissues
|
| Presentation Title |
Mechanical Properties and Biodegradability of Porous PLA/Mg and PLA/Zn Scaffolds Fabricated by Fused Filament Deposition for Biomedical Applications |
| Author(s) |
Cristina Pascual, Cillian Thompson, Jimena de la Vega, De-Yi Wang, Carlos González, Javier Llorca |
| On-Site Speaker (Planned) |
Javier Llorca |
| Abstract Scope |
In order to overcome the limitations of polymers and metals, biodegradable porous scaffolds of PLA/Mg and PLA/Zn were manufactured by means of by fused filament deposition. To this end, PLA filaments containing different volume fractions of either Mg or Zn particles of ≈ 40 µm in diameter were manufactured by extrusion of pellets containing a mixture PLA and Mg/Zn particles. They were used to manufacture porous scaffolds with a lattice structure. The mechanical properties and the fracture mechanisms of the scaffolds were ascertained by means of in situ compression tests within an X-ray µtomography system in lattices that have been immersed in simulated body fluids for different time periods. These results were used to ascertain the influence of processing parameters, lattice dimensions and Mg/Zn content on the mechanical properties and corrosion resistance of composites lattice structures manufactured by fused filament deposition. |
| Proceedings Inclusion? |
Planned: |