Design and 3D printing of non-stochastic polylactic acid structures for biomedical applications
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Abstract
The mechanical characteristics of Polylactic acid (PLA) created using the fused deposition modeling (FDM) technique for biomedical applications are investigated in this paper. PLA is a low-cost, biocompatible polymer that may be employed in a variety of biomedical applications. Bone scaffolds must have a porosity range that is optimal for tissue development, injection of rheumatic agents, and tailoring of the mechanical characteristics of the wounded area. The most serious issue with polymeric implants is a mismatch in mechanical characteristics between bone and the implant, which leads to degeneration of the surrounding bone structure, implant disassociation, and implant deformation. The present work covers three-dimensional (3D) printing and mechanical characterization of PLA manufactured by using the FDM process. It also comprises the design and modelling of PLA structures with porosities ranging from 10% to 60% and research into their impact on mechanical characteristics. Mechanical parameters were measured, such as compressive strength and elastic modulus. The elastic modulus of the planned PLA structure was determined to be 6.5 GPa at 0% porosity, while 40% porosity was found to be the optimal amount. The mechanical characteristics of the real cancellous screw are used to create and customize Cancellous Screws with varying porosity ranges.
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