Applied Chemistry, Vol.2, No.1, 32-35, May, 1998
Preparation of Polypropylene Fabric Adsorbent Containing Phosphoric Acid by Radiation-Induced Graft Copolymerization, and Adsorption of Pb2+, Cu2+ and Co2+
The cation-exchange adsorbent (CEA) was prepared by radiation-induced grafting of glycidyl methacrylate (GMA) onto polypropylene fabric and its subsequently phosphonation. The adsortion characteristics of Pb2+, Cu2+ and Co2+ to the CEA were discussed. The degree of grafting (%) for GMA increased with increasing reaction time, reaction temperature, and pre-irradiation dose. The maximum grafting yield was observed around 60% GMA concentration. The content of phosphoric acid ranged from 0.1 to 1.2 mmole/g with the 15% phosphoric acid aqueous solution. The adsontion of Pb2+ Cu2+ and Co2+ for the CEA was enhanced with increasing phosphoric acid content. The order of adsontion capacity of CEA was Pb2+>Cu2+> Co2+.