Processing and properties of PLA/Mg filaments for 3D printing of scaffolds for biomedical applications

Purpose This paper aims to develop a novel strategy manufacture poly-lactic acid (PLA) filaments reinforced with Mg particles for fused filament fabrication of porous scaffolds biomedical applications. Design/methodology/approach The mixture PLA pellets and was extruded twice, the second time using precision extruder that produces zero porosity, constant diameter homogeneous dispersion particles. physico-chemical properties were carefully analysed determine influence on depolymerisation during high temperature extrusion optimum melt flow index ensure printability. Findings It found addition polyethylene glycol (PEG) plasticizer necessary allow printing when weight fraction above 4%. possible print face-centre cubic good geometrical accuracy minimum porosity composite containing PEG. Originality/value new is easily scalable seems be very promising biodegradable thermoplastic/metal 3D can take advantage different both components from viewpoint tissue engineering.