Mechanical Properties Analysis of Composites (PLA, Chitosan and Calcium Prosphate) for bone implants

This study explores the mechanical properties of composites made from polylactic acid (PLA), chitosan, and calcium phosphate, which have potential applications in bone tissue engineering due to their biocompatibility and biodegradability. This study aims to optimize the strength and durability of composites for biomedical use, focusing on tensile strength, elongation, and surface hardness. The research method was to mix all materials (polylactic acid, chitosan, calcium phosphate) into an internalmixer, the result of mixing the materials was hot compressed in a mold. The results of this study found that the addition of calcium phosphate increased the tensile strength and hardness of the PLA matrix up to the optimal concentration, the highest tensile strength value of 80 MPa while chitosan increased elasticity and ductility. The hardness test results showed an average value of 309 HV/100. The combination of these materials resulted in a balanced composite with better mechanical properties.