Selected flexural and hygroscopic properties of waste wood dust - polylactic acid biocomposite for 3D printing.

Abstract

Chosen flexural and hygroscopic properties of waste wood dust - polylactic acid biocomposite for 3D printing. The study shows chosen flexural and hygroscopic properties of PLA-waste wood dust biocomposite intended for use in 3D printing. Materials were mixed in 3 variants, differentiated by weight content of waste wood dust – 0%, 10%, 20% and 30% and extruded in a two-stage process using an extruder of original design. Variant without waste wood dusts was prepared as well. That filaments were then used to create samples using a 3D printer. For the printed samples chosen properties were tested i.e. MOE, MOR, water absorption and thickness swelling.It was found that waste wood dust does not significantly affect MOR and MOE. It was shown that it’s content negatively impacts the water absorption and thickness swelling. It was demonstrated that the tested material can successfully be used in 3D printing.