Preparation and Characterization of Poly (Vinylidene Fluoride)/MCM-41 Nano-Composite Flat Sheet Membrane for Water Purification
Abstract
In this research, an effort has been done to enhance the Poly vinylidene fluoride (PVDF) membrane by addition of mobile composition of materials (MCM-41) nanoparticles prepared by chemical reaction for water purification. The membranes were prepared by wet phase inversion method, using N, N-dimethylformamide (DMF) as solvent and different percentage weight of MCM-41 nanoparticles (0.0, 0.01, 0.02, 0.04, 0.06, 0.1). The membranes structure and properties were characterized by scanning electron microscopic (SEM) and atomic force microscopic (AFM). The investigation of the effect of addition of MCM-41 nanoparticles to the polymer mixture shows no change in the morphology while an increase of the hydrophicity and porosity occurs, which lead to an increase about 19.2 % of water flux at optimal concentration (0.04wt% of MCM-41) at pressure 4 bars and temperature 23±10C. Mechanical properties of the PVDF membranes containing 0.04 wt. % of MCM-41 shows an increase in tensile stress about 18% relative to membrane without nanomaterial's
