Akademik Veri Yönetim Sistemi
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, cilt.33, sa.16, ss.1-15, 2024 (SCI-Expanded)
Enhancing the Tensile Behavior of Three-Dimensional Printed Polylactic Acid Composites through the Incorporation of Waste Beech Sawdust
This research investigates the influence of waste beech sawdust (WBS) as a reinforcing agent on the mechanical properties of three-dimensional (3D) printed Polylactic acid (PLA) composites. WBS, an abundant by-product from the timber processing industry, is explored for its potential to enhance the mechanical performance of PLA, a biodegradable and sustainable polymer. The study involves the integration of WBS into the PLA matrix at varying concentrations (5% to 20%) and subsequent processing of the resulting composites into filaments using a single-screw extruder. These filaments are then utilized in the 3D printing process through fused deposition modeling. Mechanical properties, including tensile strength, bending strength, and impact resistance, were systematically assessed for the WBS/PLA composites. Furthermore, the morphological structures of the composites were scrutinized using scanning electron microscopy (SEM). The results demonstrate that the incorporation of WBS contributes to heightened hardness and strength in the PLA composites, albeit with a trade-off of reduced ductility and toughness. The optimum mechanical properties, specifically the highest tensile and bending strengths, were observed in composites containing 10% WBS. As the concentration of WBS increased beyond this optimal point, a decline in impact resistance was observed. SEM analysis revealed a uniform dispersion of WBS particles within the PLA matrix, indicating effective adhesion between the reinforcing agent and the polymer matrix.