The Impact of UnCalcined & Calcined Eggshell Powder as BioFiller for Polylacticacid


The present study includes preparation of eggshell powder from the waste eggshell by milling followed by calcination at 500°C under ambient atmosphere. Composites of uncalcined and calcined eggshell / PLA with contents of 10, 20 and 30 wt% prepared by casting method. The effect of uncalcined and calcined egg shell on structural and tensile properties of polylactic acid (PLA) were studied. The prepared composites were antibacterial tested against Escherichia coli and Staphylococcus aureus (S. aureus) bacteria. Results showed the crystallinity of the synthesized films induced by egg shell. Ultimate tensile strength increased gradually with increment of the filler content and the highest ultimate strength at 30 wt. % this may be attributed to good compatibility between the egg shell and the PLA. The results of bactericidal against Escherichia coli bacteria were lower for PLA and its composites as compared with staph aureus.