FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (8): 33-35.doi: 10.7506/spkx1002-6630-200908003

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Preparation and Characterization of Sodium Alginate /TiO2 Nano-composites

TIAN Da-ting,FENG Fu,JI Xiao-xiong   

  1. (School of Chemical and Environmental Engineering, Hubei Institute for Nationalities, Enshi 445000, China)
  • Received:2008-05-29 Revised:2008-09-28 Online:2009-04-15 Published:2010-12-29
  • Contact: TIAN Da-ting, E-mail:tiandating@163.com

Abstract:

With titanium dioxide (TiO2) nano-particles as raw material and sodium alginate (SA) as matrix, SA/TiO2 nano-composites were prepared by blending method. Then the nano-composites were characterized using Fourier transform infrared spectra (FTIR), thermogravimetry (TG), and transmission electron microscopy (TEM). The results indicated that some wave numbers of FTIR characteristic peaks of SA are changed evidently because of the introduction of nano-TiO2, and the nano-TiO2 particles may well dispersed in the SA/TiO2 nano-composites. Moreover, the thermal stability and the mechanical performance of SA/TiO2 nano-composites are better than those of pure SA film.

Key words: sodium alginate (SA), nano-TiO2, nano-composites, blending

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