Hybrid Polyamide Membranes Obtained by the Immersion Precipitation Method

Abstract

This research explores replacing petrochemical derivatives with renewable resources, focusing on developing natural fiber composites. Hybrid membranes composed of polyamide 6 and sodium hydroxide-treated sisal fiber were fabricated using immersion precipitation. The membranes were analyzed for water absorption, porosity, permeability fluxes, and yield. Results indicate that the fiber content influences porosity and pore radius. Pure membranes and those containing 1% fiber exhibited higher porosity than those with 3% and 0.33% fiber. All membranes demonstrated high dye removal efficiency, achieving yields above 95%. The study concludes that incorporating sisal fiber enhances the membrane properties, making them highly effective for textile dye separation and microfiltration applications.