The Characterization of Eggshell Waste by using Polymeric Foam Replication Method

Abstract

This study was carried out to investigate the potential using polymeric sponge replication method with eggshell waste as a raw material. Carboxymethyl Cellulose (CMC) and Polyethylene Glycol (PEG) as a binder were mixed with three composition eggshell waste powder (50%, 60% and 70%) by using the polymeric foam replication method. The sample was analyzed regarding to physical properties, density, porosity, shrinkage and sound absorption.  Impedance Tube Method was used to measure sound absorption coefficient (?). The Measurements was done in accordance with ASTM E1050-98, which is the standard test method for impedance and absorption of acoustical. The results for porosity indicated that the higher content of eggshell waste the higher the value of porosity. While the result for sound absorption showed that 70% of the eggshell was good at the medium frequency to the highest of which from 1600 Hz to 5000 Hz with its range 0.88-0.94. These results indicated that 70% of eggshells showed a good potential in producing sound absorber.