The formation of polymer and hydrogel from aqueous solutions having 20

30 and 40% concentrations ofacrylamide monomer by γ-ray irradiation processing in the dose range 0.06-30 kGy using a Co-60 source and theircharacterization have been observed. Polymer conversion and gel fraction are found to depend on radiation doses. Polymerconversion increases with the increase of dose

depending on the solution concentration

where maximum conversion isachieved at 0.18

0.16 and 0.10 kGy for 20%

30% and 40% concentrations

respectively.On the other hand

gel fraction increases with dose from the gel point(0.12 kGy) for all concentrations

where 100% conversion of gel occurs at doses ≥ 5 kGy.Tensile strength

wiscosity and molecular weight(Mw) of polymer samples increase with both the dose and the concentration

showing a high value of Mw up to ≈102.Swelling of hydrogels under water with respect to time varies due to the variation of cross-linking density formed in the gels and the maximum swelling mainly within 24 h.A remarkable change of surface morphology reveals characteristic features of monomer

polymer and hydrogel films.