Preparation of polylactic acid (PLA)/thermoplastic polyurethane (TPU) composite filaments for FDM 3D printing: thermal, rheological, and mechanical characterization
Abstract Polylactic acid (PLA) is widely used in fused deposition modeling (FDM) for its printability and biodegradability, yet its brittleness restricts engineering applications. This study incorporated thermoplastic polyurethane (TPU, 10–50 wt%) to fabricate PLA/TPU composites via melt blending, followed by the prepa...