Silica/ Charcoal Addition to the Composite Polyvinyl Fluoride Membranes for Water /Organic Vapor Separation
Dr. Falak O.Abas , Raghad O. Abas , Nagham H.Abood
Abstract

In the present work, Supported polyvinyl fluoride (PVF)/S/Ch membrane were prepared by wet/dry inversion method where PVF powder was dissolved in a required suitable solvent at dissolving percent 30% vol PVF/DMF at 50 °C for 15 min and 500 cycle /min stirring velocity then different mixing weight ratio of organic and inorganic ceramic material (nano charcoal and SiO2 ) are added (0.5,0.75, 1.0,1.25, and1.5)w/w to this solution with continuous stirring until reach homogeneity then a suitable membrane were molded in thickness (1 mm) and thinner then curing this membranes at 170°C for 24 hrs afterward chemical and physical properties are measured. The results of (apparent density, porosity, and chemical absorption under moisture and acidic solution) proved that good chemical and physical properties were shown for samples supported by organic fillers (charcoal) than inorganic one of silica, and best samples have high chemical absorption and high permeability of membranes is PVF m/Ch A5 and PVF m/SiO2 A3 for both organic and inorganic one.
Keywords: PVF/Charcoal- Silica membrane. Physical and chemical properties.