34 Uranyl ion binding properties of poly(hydroxamic acid) hydrogels

Author(s): Saraydin, D; Isikver, Y; Sahiner, N

Title: Uranyl ion binding properties of poly(hydroxamic acid) hydrogels

Source: POLYMER BULLETIN, 47 (1): 81-89 SEP 2001

Language: English

Document Type: Article

Author Keywords: poly(hydroxamic acid); adsorption; uranyl ion; swelling; binding

Keywords Plus: AQUEOUS-SOLUTIONS; ADSORPTION; BEHAVIORS

Abstract: Poly(hydroxamic acid) (PHA) hydrogels, obtained from the synthesis of crosslinked poly(acrylamide) (PAAm) gels have been prepared, and their uranyl ion binding properties from two different sources were investigated. Swelling and binding parameters of crosslinked PHA gels were determined from swelling and uranyl ion adsorption studies. The effect of uranyl ion concentration, pH, temperature and mass of adsorbent on the uranyl ion adsorption were examined. The binding process between PHA and uranyl ions complies with the S type adsorption according to Giles classification. Free energies of the adsorptions found as negative values indicating spontaneous adsorption process. The structure and hydrophilicity of the used crosslinkers, the ionogenity of PHA polymers and the source of uranyl ions found to be effective on the swelling and binding behaviors of PHA hydrogels.

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: 15

Times Cited: 6

Publisher: SPRINGER-VERLAG

Publisher Address: 175 FIFTH AVE, NEW YORK, NY 10010 USA

ISSN: 0170-0839

29-char Source Abbrev.: POLYM BULL

ISO Source Abbrev.: Polym. Bull.

Source Item Page Count: 9

Subject Category: POLYMER SCIENCE

ISI Document Delivery No.: 475KU