Reactivity-Mapping Tool Based on Diffusion Techniques for Characterization of Biocolloids

Abstract:

The universal reactivity-mapping tool was developed for characterization and study on barrier properties of selected biopolymers. The reactivity of biocolloids (humic acids) was studied by both diffusion techniques (break-through diffusion technique and non-stationary diffusion). The rate of reactivity of humic acids was compared by the interactions with basic cationic organic dye (Methylene Blue) because of the positive interactions among anionic supramolecular humic acids and cationic organic dyes were expected. The reactivity and barrier properties of biocolloids were compared by determination of fundamental diffusion parameters such as effective diffusion coefficient, sorption capacity, break-through time (the time needed for penetration of chosen organic dye through hydrogel porous barrier) or the concentration of organic dye on the interface hydrogel-solution. The original combination of simple diffusion experiments of suitable diffusion probe (organic dye) with the advantages of hydrogel porous media (simple preparation of hydrogels, the diffusion is undisturbed by convection, etc.) provides very valuable information about the reactivity of chosen biocolloids.

• Periodical: Materials Science Forum (Volume 851)
• Pages: 130-134
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.851.130
• Online since: April 2016
• Authors: Jiří Smilek*, Michal Kalina, Marcela Laštůvková, Irena Türkeová, Petr Sedlacek, Martina Klučáková
• Keywords: Biocolloids, Diffusion, Humic Acids, Hydrogels, Reactivity

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