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Synthesis and Characterization of Chitosan-Nanosilver Microsphere by Ultrasonic Irradiation
Corresponding Author(s) : Hongyan Zhang
Asian Journal of Chemistry,
Vol. 26 No. 6 (2014): Vol 26 Issue 6
Abstract
Chitosan-nanosilver microspheres were synthesized by emulsion cross-linking method by ultrasonic irradiation. The microspheres were characterized by means of FTIR, XRD, SEM and DSC-TGA, respectively. FTIR showed that nanocomposites were embedded in microspheres. X-ray diffraction showed that chitosan was amorphous crystal and silver nanoparticles were face-centered cubic silver. Scanning electron microscopic evidenced that the morphology of samples all spherical with mean diameters 90 μ. TGA-DSC showed that chitosan molecules were changed, crystallization of chitosan was decreased, so the heat was low when the microspheres were decomposed.
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References
A. Grenha, C.I. Grainger, L.A. Dailey, B. Seijo, G.P. Martin, C. Remuñán-López and B. Forbes, Eur. J. Pharm. Sci., 31, 73 (2007); doi:10.1016/j.ejps.2007.02.008.
D. Li, L. Liu, K. Tian, J. Liu and X. Fan, Carbohydr. Polym., 67, 40 (2007); doi:10.1016/j.carbpol.2006.04.022.
G.D. Liang, S.P. Bao and S.C. Tjong, Mater. Sci. Eng. B, 142, 55 (2007); doi:10.1016/j.mseb.2007.06.028.
M.O.E. Ahmed and W.K. Leong, J. Organomet. Chem., 691, 1055 (2006); doi:10.1016/j.jorganchem.2005.11.015.
R. Vaidyanathan, K. Kalishwaralal, S. Gopalram and S. Gurunathan, Biotechnol. Adv., 27, 924 (2009); doi:10.1016/j.biotechadv.2009.08.001.