43 Radiation crosslinked poly(acrylamide/2-hydroxypropyl methacrylate/maleic acid) and their usability in the uptake of uranium

Author(s): Saraydin, D; Solpan, D; Isikver, Y; Ekici, S; Guven, O

Title: Radiation crosslinked poly(acrylamide/2-hydroxypropyl methacrylate/maleic acid) and their usability in the uptake of uranium

Source: JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY, A39 (9): 969-990 2002

Language: English

Document Type: Article

Author Keywords: radiation; hydrogel; poly(acrylamide/2-hydroxy propylmethacrylate/maleic acid); uranyl ion; adsorption

Keywords Plus: AQUEOUS-SOLUTIONS; URANYL IONS; HYDROGELS; ADSORPTION; AMIDOXIME; SORPTION; BEHAVIOR; WATER; BIOSORPTION; GOETHITE

Abstract: The terpolymeric poly(acrylamide/2-hydroxy propylmethacrylate/maleic acid) (AAm/HPMA/MA) hydrogels in the rod form have been prepared by gamma radiation of quaternary mixtures of acrylamide/2-hydroxy propylmethacrylate/ maleic acid/water. Spectroscopic and thermal analyses of AAm/HPMA/MA were made. The hydrogels were used in experiments on swelling, diffusion and adsorptions of uranyl ions from aqueous uranyl acetate solutions. For the hydrogels, the parameters of swelling and diffusion were calculated. In the experiment of uranyl ions adsorption, Type L (Langmuir) adsorption isotherm in Giles classification system was found. Binding parameters such as the initial binding constant (K-i), the equilibrium binding constant (K), monolayer coverage (n), site-size (u), maximum fractional occupancy (theta) were calculated for hydrogel/uranyl ion system by using the linearization methods such as Klotz, Scatchard and Langmuir methods. Thermodynamic parameters such as adsorption free energy (DeltaG), adsorption enthalpy (DeltaH) and adsorption entropy (DeltaS) were also calculated. Finally, the effect of MA contents of the hydrogel and irradiation doses was Studied on the adsorption of uranyl ion from its aqueous solution.

Addresses: Cumhuriyet Univ, Dept Chem, Hydrogel Res Lab, TR-58140 Sivas, Turkey; Hacettepe Univ, Dept Chem, TR-06532 Ankara, Turkey

Reprint Address: Saraydin, D, Cumhuriyet Univ, Dept Chem, Hydrogel Res Lab, TR-58140 Sivas, Turkey.

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Cited Reference Count: 27

Times Cited: 1

Publisher: MARCEL DEKKER INC

Publisher Address: 270 MADISON AVE, NEW YORK, NY 10016 USA

ISSN: 1060-1325

29-char Source Abbrev.: J MACROMOL SCI PURE APPL CHEM

ISO Source Abbrev.: J. Macromol. Sci.-Pure Appl. Chem.

Source Item Page Count: 22

Subject Category: POLYMER SCIENCE

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