Elastic Properties of Recycled Soda-lime Glasses Doped with Copper(I)oxide (Cu2O) Studied by Ultrasonic Technique and Fourier Transform Infrared Spectroscopy

Abstract

The purpose of this work was to study the elastic moduli and structural properties of recycled window glass using ultrasonic technique and Fourier transform infrared spectroscopy. The glass system of 90Recycled window glass – 10Na₂O – xCu₂O (where x is 0.001, 0.01, 0.1 and 1.0 mol%) were prepared by melt quenching technique at the melting temperature of 1250°C for 4 h and annealing temperature of 500°C for  2 h. Then, densities of glass sample with varying the Cu₂O dopant were measured. The longitudinal and shear velocities were measured by using ultrasonic technique at 4 MHz frequency at room temperature. Next the value of densities and the ultrasonic velocities data of glass samples were used to calculate the elastic properties such as longitudinal modulus, shear modulus, bulk modulus, Young’s modulus, Poisson's ratio and micro-hardness as well as physical properties such as acoustic impedance, softening temperature and Debye temperature. Finally, Fourier transform infrared spectroscopy was measured in wave number range 400 - 2000 cm^-1 to study structure of the glass samples. The results indicated that the ultrasonic velocity, elastic moduli, Poisson’s ratio, micro-hardness, acoustic impedance, softening temperature and Debye temperature depended on the concentration of Cu₂O dopant and could be confirmed by Fourier transform infrared spectroscopy results.