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


Saraydin D., Karadag E., Sahiner N., Guven O.

JOURNAL OF MATERIALS SCIENCE, vol.37, no.15, pp.3217-3223, 2002 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 37 Issue: 15
  • Publication Date: 2002
  • Doi Number: 10.1023/a:1016170630750
  • Title of Journal : JOURNAL OF MATERIALS SCIENCE
  • Page Numbers: pp.3217-3223

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.