Novel Hybrid Bio Composite PLA Filaments Reinforced with Bio Fillers for 3D Printing

3D printing has been emerged an innovative and popular technique in the field of manufacturing complex shaped geometry components. Considering development of environmental friendly materials and waste management global issues, many researchers are striving for development of eco-friendly and bio based polymers with addition of bio fillers to improve the applicability in the field of engineering applications and many more. In this research work, efforts have been to develop novel hybrid 3D printer filaments of PLA reinforced with walnut shell powder, egg shell powder, and white marble powder as a bio fillers. There are three types of hybrid PLA filaments were produced with 2% of bio fillers are mixed in PLA individually. The filaments were tested for parameters like tensile test, hardness, density, elongation, and melting point. The hardness is observed maximum 90–92 Sh.D in PLA+ white marble powder filament. The addition of walnut shell powder in PLA filament decreases density from 1.24 to 1.0437 g/cm³. Highest melting point is 134 °C for filament of PLA with egg shell powder. The PLA + WSP shows maximum tensile strength of 50.133 MPa. The maximum elongation of 24.62% occurs in PLA+ WSP filament.