Abstract
Semi-IPN hydrogels based gelatin (GEL) and/or poly (ethylene glycol) (PEG) were prepared with acrylamide (AAm) and 4-styrenesulfonic acid sodium salt, (SSS) as a water adsorbent for cationic dye (methyl violet, MV) sorption. For this, chemically crosslinked copolymer of AAm/SSS copolymer with GEL and/or PEG were prepared by polymerization of aqueous solution of AAm and SSS using ammonium persulfate (APS)/N,N,N′,N′-tetramethylethylenediamine (TEMED) as redox initiating pair in presence of poly(ethylene glycol)diacrylate (PEGDA) as crosslinker. FT-IR analysis was used to identify the presence of different repeating units in the semi-IPNs. Surface morphology was characterized by scanning electron microscopy (SEM). Some swelling and diffusion characteristics were calculated for different semi-IPNs and hydrogels prepared under various formulations. Water uptake, and dye sorption properties of the crosslinked polymeric systems such as AAm/SSS, AAm/GEL/SSS, AAm/PEG/SSS and AAm/GEL/PEG/SSS hydrogel systems were investigated as a function of chemical composition of the hydrogels. MV have used in sorption studies.
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