Small molecule diffusion into swelling Iota-Carrageenan gels: A fluorescence study
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CitationAtaman, E., & Pekcan, Ö. (2007). Small molecule diffusion into swelling iota-carrageenan gels: A fluorescence study. Journal of Biomolecular Structure and Dynamics, 24(5), 505-513. doi:10.1080/07391102.2007.10507139
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.