Study of bagasse and cassava rhizome effects on the physical, mechanical and structural properties of soda-lime borate glasses

Abstract

The glass prepared from sustainable raw materials yields interesting properties, besides the low cost and environmentally friendly. Two series of glass compositions based on B 2 O 3-P 2 O 5-Na 2 O-CaO added with bagasse (BG) and cassava rhizome (CR) were fabricated by melt-quenching technique, and their physical, mechanical and structural properties were studied. The physical properties such as density and molar volume were calculated and discussed. The elastic moduli, Poisson's ratio, Debye temperature, acoustical impedance and microhardness have been estimated based on pressure-controlled ultrasonic technique at 4 MHz frequency with normal and angle probes. It was found that the addition of bagasse and cassava rhizome leads to an increase of elastic constants, Debye temperature and microhardness of the prepared glass. Vickers hardness tester was also applied to determine microhardness of the glass using an applied load of 0.98 N. The values of microhardness obtained from both techniques were compared and a good correlation was observed. Moreover, the internal structural units of the glass samples have been estimated by FTIR. XRD spectroscopy was applied to confirm the amorphous nature in the glasses.