30 Radiation induced superabsorbent hydrogels. Acrylamide/itaconic acid copolymers

Author(s): Karadag, E; Saraydin, D; Guven, O

Title: Radiation induced superabsorbent hydrogels. Acrylamide/itaconic acid copolymers

Source: MACROMOLECULAR MATERIALS AND ENGINEERING, 286 (1): 34-42 JAN 2001

Language: English

Document Type: Article

Keywords Plus: BOVINE SERUM-ALBUMIN; CROSS-LINK DENSITY; CATIONIC DYES; AQUEOUS-SOLUTIONS; DRUG DELIVERY; ADSORPTION; WATER; POLYMERS; GELS; BIOCOMPATIBILITY

Abstract: Acrylamide/itaconic acid hydrogels in the form of rods are prepared by gamma -irradiation of ternary mixtures of acrylamide/itaconic acid/water with 2.00-5.71 kGy gamma -rays. Spectroscopic and thermal characteristic the copolymers were examined. Dynamic and equilibrium swelling behavior of superabsorbent acrylamide/itaconic acid hydrogels was investigated in water. The equilibrium swelling degree, the swelling rate coefficient, the diffusion constant, the diffusion exponent, the diffusion coefficient, and the intrinsic diffusion coefficient of acrylamide/itaconic acid hydrogels were calculated. The superabsorbent hydrogels have shown mass swelling capabilities in the range 650-700% (for polyacrylamide hydrogels) and 900-2100% (for acrylamide-itaconic acid hydrogels) Diffusion type of the hydrogels is non-Fickian diffusion. The equilibrium swelling studies were used to determine important parameters of the crosslinked structure of the hydrogels, including the average molar mass between crosslink density.

Addresses: Adnan Menderes Univ, Dept Chem, TR-09010 Aydin, Turkey; Cumhuriyet Univ, Dept Chem, TR-58140 Sivas, Turkey; Hacettepe Univ, Dept Chem, TR-06532 Ankara, Turkey

Reprint Address: Karadag, E, Adnan Menderes Univ, Dept Chem, TR-09010 Aydin, Turkey.

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Cited Reference Count: 56

Times Cited: 9

Publisher: WILEY-V C H VERLAG GMBH

Publisher Address: PO BOX 10 11 61, D-69451 BERLIN, GERMANY

ISSN: 1438-7492

29-char Source Abbrev.: MACROMOL MATER ENG

ISO Source Abbrev.: Macromol. Mater. Eng.

Source Item Page Count: 9

Subject Category: MATERIALS SCIENCE, MULTIDISCIPLINARY; POLYMER SCIENCE

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