| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Biomaterials for 3D Printing of Scaffolds and Tissues
|
| Presentation Title |
Processing and Properties of 3D Printed Bioabsorbable Polymer-Metal Composites (PLDL/Mg and PLDL/Zn) for Orthopaedic Applications |
| Author(s) |
Cillian Thompson, Guillermo Domínguez, Jimena de la Vega, Cristina Pascual-González, Monica Echeverry-Rendón, Carlos González, Javier Llorca |
| On-Site Speaker (Planned) |
Javier Llorca |
| Abstract Scope |
Filaments of 2.85 mm in diameter of poly-lactic acid reinforced with different weight fractions of µm-sized Mg or Zn particles were obtained by a double extrusion in method in which standard extrusion is followed by a precision extrusion in a filament-makermachine. The filaments had constant diameter, negligible porosity and a homogeneous reinforcement distribution. They were used to manufacture porous scaffolds by fused-filament fabrication. The mechanical properties, degradation rate and cytocompatibility of the 3D printed materials and scaffolds were measured following ISO standards. The influence of the metallic particles on the deformation and fracture mechanisms, the degradation processes in simulated body fluid and the material/cell interactions were analyzed. It was found that all the materials were suitable for orthopaedic applications and that the addition of metallic particles can be used to tailor the degration rate. In addition, it was possible to manufacture porous scaffolds with excellent dimensional accuracy by fused-filament fabrication. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |
| Keywords |
Biomaterials, Additive Manufacturing, |