Small molecule diffusion into swelling Iota-Carrageenan gels: A fluorescence study


Ataman E., Pekcan O.

JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS, vol.24, no.5, pp.505-513, 2007 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 24 Issue: 5
  • Publication Date: 2007
  • Doi Number: 10.1080/07391102.2007.10507139
  • Title of Journal : JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
  • Page Numbers: pp.505-513

Abstract

Small molecule diffusion into Iota-Carrageenan gel was studied by using steady-state fluorescence (SSF) technique. Pyranine, dissolved in water was used as fluorescence probe. Fluorescence emission intensity, I-p, and scattered light intensity, I-sc, were monitored to study diffusion and swelling processes at various temperatures respectively. Fickian and Li-Tanaka models were elaborated to produce diffusion, D, and collective diffusion, D-0, coefficients. Diffusion and swelling activation energies were also obtained and found to be 20.5 kj mol(-1) and 28.2 kj mol(-1). respectively.