Investigation of Thermophysical Properties of Polyester Composites Produced with Synthesized MSG and Nano-Alumina

Abstract

In this study, synthesis of a new compound, 4-[(E)-(5-Bromo-2-hydroxy-3-methoxybenzylidene) amino]-N carbamimidoylbenzenesulfonamide (MSG) has been carried out. The structures of MSG are characterized using spectroscopic methods such as Fourier transform infrared spectroscopy (FTIR), and proton nuclear magnetic resonance spectroscopy (NMR). In experimental studies, synthesized MSG has been reinforced with 1 wt.% and 2 wt.% unsaturated polyesters. Besides, 1 wt.% and 2 wt.% alumina nanoparticles, 1.5 wt.% methyl ethyl ketone peroxide (MEKP), and 0.5 wt.% cobalt octoate (Co Oc) were used to produce polyester composites. Although alumina nanoparticles increased the density of the produced polyester composite, MSG supplementation decreased it. While nano-alumina raised Shore D hardness of the polyester composite, synthesized MSG went down it. Both nano-alumina and MSG reinforcement have been increased the porosity in the surface morphology of the polyester composite. Also, nano-alumina reinforcement raised the activation energy of the polyester composite and MSG decreased it. In other words, since the alumina filler raises the activation energy, the thermal stability of the polyester composite has gone up.