42 Incorporation of malonic acid into acrylamide hydrogel by radiation technique and its effect on swelling behavior

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

Title: Incorporation of malonic acid into acrylamide hydrogel by radiation technique and its effect on swelling behavior

Source: JOURNAL OF MATERIALS SCIENCE, 37 (15): 3217-3223 AUG 1 2002

Language: English

Document Type: Article

Keywords Plus: CONTROLLED-RELEASE SYSTEMS; AQUEOUS-SOLUTION; DYE ADSORPTION; COPOLYMERS; BIOCOMPATIBILITY; POLYMERS

Abstract: Different amounts of malonic acid (MAc) containing acrylamide (AAm) hydrogels were obtained in the form of rods via a radiation technique. Swelling experiments were performed in water at 25 degreesC, gravimetrically. The influence of absorbed dose and malonic acid content of the hydrogels on swelling properties were examined. Diffusion behaviour and network parameters were investigated. Swelling of AAm/MAc hydrogels is increased up to ca. 900%, while pure AAm hydrogels swelled up to ca. 700%. Water diffusion into hydrogels was found to be non-Fickian in character. Diffusion coefficients of AAm/MAc hydrogels were calculated by the short time approximation and found to be 6 4 x 10(-7)-10.4 x 10(-7) cm(2) sec(-1). A possible mechanism for AAm/MAc hydrogels was also suggested. (C) 2002 Kluwer Academic Publishers.

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

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

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Cited Reference Count: 28

Times Cited: 1

Publisher: KLUWER ACADEMIC PUBL

Publisher Address: VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS

ISSN: 0022-2461

29-char Source Abbrev.: J MATER SCI

ISO Source Abbrev.: J. Mater. Sci.

Source Item Page Count: 7

Subject Category: MATERIALS SCIENCE, MULTIDISCIPLINARY

ISI Document Delivery No.: 572EQ