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In this current study, the producibility of 3D printed walnut shell composite is investigated. PLA granules and untreated ground walnut shells were mixed priorly and then extruded by using a single screw extruder to produce filaments for 3D printing. Then, pristine and walnut shell doped PLA filaments were 3D-printed by using the fused filament fabrication (FFF) method. The thermal decomposition behaviour of the filaments and the morphology of 3D printed parts are examined by Thermo-gravimetric analysis (TGA) and scanning electron microscopy (SEM), respectively. SEM micrographs presented non-adhesion between the particle and the polymer and also non- homogeneous particle distribution. TGA data revealed that the moisture content of PLA increased, and both pristine and doped PLA filament can resist to extrusion processes which take place at 200C. |
