Swelling Characterization of Nanocomposite Hydrogels of Poly (acrylamide-N-vinylimidazole)

In this study, a hydrogel composed of acrylamide (aam) with n-vinylimidazole (nvi) as co-monomer, with a cross-linker such as n, n` methylenebisacrylamide and potassium peroxodisulfate as an initiator solution was prepared. poly (aam/nvi) hydrogels were synthesized by free radical solution polymerization. swelling experiments were performed in water at 25°c, gravimetrically. here, it was of interest to increase the water absorption capacity of aam hydrogels with add vi. aam is a highly hydrophilic monomer, and vi monomer is neutral. the one purpose of this study is to combine both monomers in one polymer. in this respect, a series of hydrogels was synthesized by changing the content of aam and vi. then, some swelling of these hydrogels was studied in water.