This research focusing on the improvement of physical properties of silica by acidic precipitation from water glass and optimize the cost of this production. One of the prominent applications of silica nanoparticles is as a filler or reinforcement in advanced composite materials. A nanosilica was characterized by many tests such as particle size analyzing, XRD, FTIR, TEM, SEM and EDS. The results show that morphous SiO2 particles with an average size less than 100 nm, with 100% purity with very fine white powder, and density of 0.2817 g/ml.

This research focusing on the improvement of physical properties of silica by acidic precipitation from water glass and optimize the cost of this production. One of the prominent applications of silica nanoparticles is as a filler or reinforcement in advanced composite materials. A nanosilica was characterized by many tests such as particle size analyzing, XRD, FTIR, TEM, SEM and EDS. The results show that morphous SiO2 particles with an average size less than 100 nm, with 100% purity with very fine white powder, and density of 0.2817 g/ml.