This research with aim of evaluation the effect of chemical treatment of wood flour on physical. mechanical and morphological properties of polypropylene-nano SiO2 hybrid nanocomposite were done. For this purpose. wood flour with sodium hydroxide and benzyl chloride to chemically treatment. https://www.roneverhart.com/MagnaFlow-2001-2005-Honda-Civic-Street-Series-Cat-Back-Performance-Exhaust-System/