Preparation of adsorbent for palladium ions by amination of acrylonitrile grafted polypropylene nonwoven fabrics

A new chelating fabrics are synthesized by radiation induced grafting of acrylonitrile (AN) onto polypropylene nonwoven fabrics (PP fabrics) and subsequent conversion of cyano to an imine by reaction with ethylene diimine (EDA). Influence of various parameters such as initial concentration, pH and adsorption time on the adsorption amount for palladium ions was investigated. It was found that adsorbent achieved excellent adsorption performance in palladium ion removal in the pH range of 1.88-5.70. The adsorption amount of ions increased with shaking time and initial concentration of palladium ions. The grafted and aminated fabrics were characterized by FT-IR, TGA and SEM. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 116: 1414-1421, 2010