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Preparation, Characterization, Bioactive and Metal Uptake Studies of Alginate/phosphorylated Chitin Blend Films

Publication Type : Journal Article

Thematic Areas : Nanosciences and Molecular Medicine

Publisher : International Journal of Biological Macromolecules

Source : International Journal of Biological Macromolecules, Volume 44, Number 1, p.107-111 (2009)

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Keywords : adsorption, adsorption kinetics, Alginates, alginic acid, article, Biomimetics, calcium chloride, chitin, chitin derivative, copper ion, cross linking, Electron, Fourier Transform Infrared, Glucuronic Acid, Heavy, Hexuronic Acids, Hydroxyapatite, Infrared, infrared spectroscopy, kinetics, Macromolecular Substances, Materials Testing, Metals, microscopy, Nickel, Phosphorylation, Scanning, scanning electron microscopy, spectrophotometry, Spectroscopy, zinc ion

Campus : Kochi

School : Center for Nanosciences

Center : Nanosciences

Department : Nanosciences and Molecular Medicine

Year : 2009

Abstract : Alginate/phosphorylated chitin (P-chitin) blend films were prepared by mixing of 2% of alginate and P-chitin in water and then cross-linked with 4% CaCl2 solution. The blended films were characterized by FT-IR. Then, the bioactivity of blend films was studied by biomimetic method in simulated body fluid solution (SBF) for 7, 14 and 21 days. After 7, 14 and 21 days and films were characterized by FT-IR and SEM studies. The SEM and FT-IR studies showed that the hydroxyapatite was formed on the surface of the blend films after 7, 14 and 21 days in the SBF solution. These studies confirmed that the alginate/P-chitin blend films are bioactive. Furthermore, the adsorption of Ni2+, Zn2+and Cu2+onto alginate/P-chitin blend films has been investigated. The parameters studied include the pH, contact time, and initial metal ion concentrations. The maximum adsorption capacity of alginate/P-chitin blend films for Ni2+, Zn2+and Cu2+ at pH 5.0 was found to be 5.67, 2.85 and 11.7 mg/g, respectively. These results suggest that alginate/P-chitin blend films-based technologies may be developed for water purification and metal ions separation and enrichment.

Cite this Research Publication : R. Jayakumar, Rajkumar, M., Freitas, H., Selvamurugan, N., Nair, S. V., Furuike, T., and Tamura, H., “Preparation, Characterization, Bioactive and Metal Uptake Studies of Alginate/phosphorylated Chitin Blend Films”, International Journal of Biological Macromolecules, vol. 44, pp. 107-111, 2009.

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