Synthesis of Graft Copolymer of Poly(acrylic acid) and Poly(vinyl alcohol) in the Presence of Methylene Bisacrylamide Crosslinker and Investigation of its Efficiency in Removing Lead Ion from Aqueous Solution

摘要

A novel graft copolymer of acrylic acid onto poly(vinyl alcohol) has been synthesized and it is crosslinked by methylene bisacrylamidefor the investigation of its efficiency in removing lead ion from aqueous solution. The chemical nature of the ion exchange resin hasbeen elucidated with the help of chemical test, FTIR, TGA and DSC. Particle size (0.20 mm), surface area (85.6 m~2/g), ion exchangecapacity (5.3 meq H~+/g), optimum pH (4.5), time (60 min) and temperature (40°C) for Pb(II) adsorption were determined. Metalion adsorption kinetics, isotherms and thermodynamics have been studied. A plausible mechanism for lead ion exchange has beensuggested.