Safety Treatment of Hazardous Liquid Waste Using Functionalized Copolymers Prepared by Using Ionizing Radiation

Abstract

1- MeOH/H2o mixture was found to be the most proper solvent for each monomer, for Acrylic Acid (AAc), Acrylamide (AAm), vinyl alcohol (VA) it was(70: 30% wt) while for styrene(sty) it was (80: 20% wt). 2- The optimum gel % obtained at comonomer composition (50: 50)wt % and at irradiation dose 30KGy which is called gelation dose. 3- The water uptake of the prepared hydrogels increased with swelling time, reaching maximum equilibrium of swelling at 24h. The swelling behavior of PAAm in distilled water is higher than that for PAAc, PVA and Psty. The water absorbency of such hydrogels, decreases in the order PAAm, PVA, PAAc and Psty. The swelling of copolymers follows the order PAAm/ PAAc> PAAm/ PVA> Psty/PAAc. 4- The water uptake percentage increased with irradiation dose up to 30KGy and then any increase in radiation dose leads to decrease in water absorbency due to the increase