Investigation of principles of water and model molecule sorption onto highly swollen chemically crosslinked acrylamide/itaconic acid hydrojels

In this study, it was aimed that synthesis of chemically crosslinked polymersby using acrylamide as monomer with itakonic acid as comonomer and PEG forwater-absorbent composite system, characterization and the investigation ofadsorption properties of synthesized polymers. Chemically crosslinkedacrylamide/itakonic acid/PEG copolymers were prepared by free radicalpolymerization in aqueous solution using trimethylopropane triacrylate ascrosslinkers. Ammonium persulphate as initiator and N,N,N',N'-tetramethylethylenediamine as accelerator were used in the reaction.Structural characterization of chemically crosslinked acrylamide/itakonic acid/PEG copolymers was made with Fourier Transform Infrared Spectroscopy (FT-IR)analysis. Dynamic swelling tests were applied to chemically crosslinkedacrylamide/itakonic acid/PEG copolymers at 25oC for swelling characterization.Parameters about swelling kinetics and diffusion mechanism were calculated byusing of the results of swelling studies.Basic Blue 12 (BB 12) and uranium acetate (for uranyl ions) were selected asmodel molecules to investigate adsorption properties of chemically crosslinkedacrylamide/itakonic acid/PEG copolymers. Adsorption properties were investigatedby interacting chemically crosslinked acrylamide/itakonic acid/PEG copolymerssamples with BB 12 and uranium acetate (for uranyl ions) until equilibrium at 25oC.At the end of the experiments %53-64 BB 12, %25-57 Uranyl ions adsorptions weredetermined.