About this Abstract |
Meeting |
MS&T21: Materials Science & Technology
|
Symposium
|
Next Generation Biomaterials
|
Presentation Title |
Additive Manufacturing of PLA-based Composites Using a Colloidal Feedstock: Biodegradable and Permanent Scaffolds in Medical Applications |
Author(s) |
Begoņa Ferrari, Ana Ferrandez-Montero, Alvaro Eguiluz, Antonio Javier Sanchez-Herencia |
On-Site Speaker (Planned) |
Antonio Javier Sanchez-Herencia |
Abstract Scope |
Thermal extrusion of materials, commonly known fused filament forming (FFF), is one of the most extended additive manufacturing technique, since it is easy to settle, safe, and inexpensive. The use of FFF to fabricate composite scaffolds require of a filament composed by the metal/ceramic load and a thermoplastic polymer as PLA, acting as structurers of the final shape and printing vehicle, being the dispersion of the metal/ceramic phase in the polymer matrix a key process condition to provide the biofunctionality.
A colloidal approach will be described to process of PLA-based filaments with different compositions, ranging 5-50 vol.% of well dispersed Mg or HA. Powders were stabilized to be compatible with the PLA matrix during printing, using a 3D desktop printer. Dispersion allows including enough inorganic load in the filament to shape a 100% inorganic implant after the ad hoc thermal treatment. Cellular adhesion and proliferation tests evidence bioactivity and biocompatibility |