POLY(4-VINYLPYRIDINE-CO-ACRYLAMIDE) RESIN AND ITS RETENTION PROPERTIES FOR METAL-IONS

The poly(4-vinylpyridine-co-acrylamide) resin was synthesized by radic al polymerization using AlBN and divinylbenzene as initiator and cross linker agents respectively. The resin was completely insoluble in wate r. Both homopolymers, poly(4-vinylpyridine) and poly(acrylamide) were also synthesized as reference materials. The resin was characterized b y elemental analyses and FT-IR spectroscopy. The retention properties of these resins were studied by batch equilibrium procedure, consideri ng the effect of the pH on the retention of Cu(II), Fe(II), Fe(III), a nd U(VI), maximum capacity of load for U(VI) at optimum pH; elution by Na2CO3 and H2SO4 of U(VI) from the loaded resin; retention behaviour of U(VI) from a binary mixture, Cu(II)-U(VI). Finally the thermal stab ility was investigated by dynamic thermogravimetry.