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Abstract
Polylactic acid (PLA) is one of the most valuable thermoplastic due to biodegradability, biocompatibility, good mechanical properties, thermal stability, and flowability. These properties make it a promising candidate for fused filament fabrication (FFF) based 3D printing in biomedical applications. When PLA thermoplastic is reinforced with functional nano-particles (such as ZnO) into its matrix, then mechanical, thermal, rheological, electrical, and magnetic and shape memory properties can be tuned. Also, correlating these properties can be helpful for better applicability in 3D printing applications. In this study, feedstock filaments of Mn doped ZnO nano-particles reinforced with of PLA have been prepared by twin screw compounding process and a correlation has been developed among tensile, rheological, morphological and thermal properties. The observations of this study suggested that there is negative correlation of ultimate tensile strength, fracture tensile strength and percentage elongation at fracture with melt flow index (MFI), percentage (%) porosity and glass transition temperature of feedstock filaments. Also, a positive correlation of percentage elongation at peak with MFI, %porosity and glass transition temperature has been observed.
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