Abstract
We have investigated the formation of silica/alginate biocomposites. The silica gel was first obtained by the sol-gel route using aqueous precursors, in the presence of the polymer. Gelation of the trapped alginate could be consequently performed by addition of a divalent metal cation. Thermogravimetric analysis, SEM and nitrogen adsorption-desorption experiments indicated that the polymer is located in the macroporosity of the biocomposites so that it can be partially removed by citrate treatment. Even though only weak hydrogen bonds are expected, the morphological features of the composites revealed to depend on the biopolymer content of the initial solution.
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Coradin, T., Livage, J. Synthesis and Characterization of Alginate/Silica Biocomposites. Journal of Sol-Gel Science and Technology 26, 1165–1168 (2003). https://doi.org/10.1023/A:1020787514512
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DOI: https://doi.org/10.1023/A:1020787514512