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Poly(Acrylamide-Sepiolite) Composite Hydrogels: Preparation, Swelling and Dye Adsorption Properties

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Summary

Polymer-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.

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Authors and Affiliations

  1. Chemistry Department, Çanakkale 18 Mart University, Çanakkale, Turkey

    Sema Ekici

  2. Chemistry Department, Hydrogel Research Lab., Cumhuriyet University, 58140, Sivas, Turkey

    Yasemin Işıkver & Dursun Saraydın

Authors
  1. Sema Ekici
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  2. Yasemin Işıkver
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  3. Dursun Saraydın
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Correspondence to Dursun Saraydın.

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Ekici, S., Işıkver, Y. & Saraydın, D. Poly(Acrylamide-Sepiolite) Composite Hydrogels: Preparation, Swelling and Dye Adsorption Properties. Polym. Bull. 57, 231–241 (2006). https://doi.org/10.1007/s00289-006-0552-0

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  • DOI: https://doi.org/10.1007/s00289-006-0552-0

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