Ekici, SemaIsikver, YaseminSaraydin, Dursun2025-01-272025-01-2720060170-08391436-2449https://doi.org/10.1007/s00289-006-0552-0https://hdl.handle.net/20.500.12428/23781Polymer-clay hydrogel composite was prepared on the basis of polyacrylamide (PAAm) gel containing the clay mineral sepiolite. The properties of swelling and dye adsorption of poly(acrylamide-sepiolite) (AAm/Sep) composite hydrogel were investigated. The parameters of swelling and diffusion in water and dye solutions were calculated for the AAm and AAm/Sep hydrogels. It was found that the equilibrium swelling degree of obtained composite higher than that of AAm gel. Spectroscopic analysis of composite and composite-dye systems was done with FT-IR method. Adsorption of monovalent cationic dyes such as Basic Blue 12 (BB-12) Basic Blue 9 (BB-9), and Basic Violet 1 (BV-1), was studied on the composite. In the adsorption experiments, S (Sigmoidal) type for composite gel adsorption isotherms in the Giles classification system was found. Adsorption studies indicated that the amounts of adsorbed dyes on the AAm/Sep composite hydrogel were increased with following order; BB-12 > BB-9 > BV-1. The composite hydrogel may be considered as good candidate for environmental application to retain more water and dyes.eninfo:eu-repo/semantics/closedAccessIncorporated BentoniteModel-CalculationsIonic SurfactantsCationic DyesSepioliteGelsWaterMontmorilloniteSilicatesPolymersArticle57223124110.1007/s00289-006-0552-0Q3WOS:0002376493000122-s2.0-33646761660Q1