57 Swelling characterization of gamma-radiation induced crosslinked acrylamide/maleic acid hydrogels in urea solutions

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

Title: Swelling characterization of gamma-radiation induced crosslinked acrylamide/maleic acid hydrogels in urea solutions

Source: MATERIALS & DESIGN, 27 (7): 576-584 2006

Language: English

Document Type: Article

Author Keywords: gamma-radiation; swelling; acrylamide/maleic acid; hydrogel; urea

Keywords Plus: PHYSIOLOGICAL BODY-FLUIDS; AQUEOUS-SOLUTION; BIOMEDICAL APPLICATIONS; POLYMERS; ADSORPTION; BEHAVIORS

Abstract: Swelling behaviors of crosslinked acrylamide/maleic acid (CAMA) hydrogels synthesized by gamma-radiation crosslinking of acrylamide and maleic acid in aqueous urea solutions were investigated. CAMA hydrogels containing different amounts of maleic acid were obtained in the form of rods via a radiation technique. Swelling experiments were performed in two different urea concentrations at 25 degrees C, gravimetrically. The hydrogels showed enormous swelling in aqueous medium and displayed swelling characteristics that were highly dependent on the chemical composition of the hydrogels and irradiation dose. Diffusion behavior and some swelling kinetics parameters were investigated. The values of the swelling percent of CAMA hydrogels were between 935% and 5212%, while the values of the swelling percent of acrylamide hydrogels were between 669% and 923%. The difference of the concentrations of urea solutions was not affected by the swelling properties of the hydrogel systems. Urea/water diffusion into hydrogels was found to be non-Fickian in character. Equilibrium urea/water contents of the hydrogel systems were changed between 0.8699 and 0.9812. (C) 2004 Elsevier Ltd. All rights reserved.

Addresses: Adnan Menderes Univ, Fen Edebiyat Fac, 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, Fen Edebiyat Fac, Dept Chem, TR-09010 Aydin, Turkey.

E-mail Address: ekaradag@adu.edu.tr

Cited References: ALI AEH, 2003, EUR POLYM J, V39, P2337.
BHATTACHARYA A, 2000, PROG POLYM SCI, V25, P371.
CHEN JP, 2000, ENZYME MICROB TECH, V26, P359.
CLOUGH RL, 2001, NUCL INSTRUM METH B, V185, P8.
GUVEN O, 1999, RADIAT PHYS CHEM, V56, P381.
JABBARI E, 2000, EUR POLYM J, V36, P2685.
KAETSU I, 1995, RADIAT PHYS CHEM, V46, P1025.
KARADAG E, 1996, BIOMATERIALS, V17, P67.
KARADAG E, 2002, EUR POLYM J, V38, P2133.
KARADAG E, 2004, NUCL INSTRUM METH B, V225, P489.
LUAGO AB, 2001, NUCL INSTRUM METH B, V185, P37.
PENICHE C, 1997, POLYMER, V38, P5977.
PEPPAS NA, 1983, J POLYM SCI POL PHYS, V21, P983.
ROSIAK JM, 1999, NUCL INSTRUM METH B, V151, P56.
ROSIAK JM, 1999, RADIAT PHYS CHEM, V55, P139.
SAFRANY A, 1997, NUCL INSTRUM METH B, V131, P376.
SARAYDIN D, 1995, POLYM ADVAN TECHNOL, V6, P719.
SARAYDIN D, 1995, SEPARATIOIN SCI TECH, V30, P3747.
SARAYDIN D, 2001, POLYM BULL, V46, P91.
SARAYDIN D, 2002, NUCL INSTRUM METH B, V187, P340.
SARAYDIN D, 2004, J MACROMOL SCI CHEM, V41, P421.
SCHMIDT T, 2003, NUCL INSTRUM METH B, V208, P331.
TIGHE BJ, 1986, BRIT POLYM J, V18, P8.
URUZHIZAKI F, 1990, INT J PHARM, V58, P135.

Cited Reference Count: 24

Times Cited: 0

Publisher: ELSEVIER SCI LTD

Publisher Address: THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND

ISSN: 0261-3069

29-char Source Abbrev.: MATER DESIGN

ISO Source Abbrev.: Mater. Des.

Source Item Page Count: 9

Subject Category: Materials Science, Multidisciplinary

ISI Document Delivery No.: 024UU