Preparation of Alginate/Silica Composite Beads with In Vitro Apatite-Forming Ability

Abstract:

Alginate/silica composite beads of mm-size for biomedical applications were prepared from water glass and sodium alginate via a simple sol-gel route. They kept their original shapes when soaked in the phosphate solution of lower pH. In this case, faint calcium phosphate peaks were observed in X-ray diffraction. Peaks corresponding to phosphate group were also found in FT-IR. Apatite was obtained on the surface of beads made with calcium chloride after soaking in phosphate solution while monetite was formed on the surface of beads made with calcium nitrate.

• Periodical: Advanced Materials Research (Volumes 236-238)
• Pages: 1889-1892
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.236-238.1889
• Online since: May 2011
• Authors: Fan Xiao, Fei Gao, Zhi Xian Zhang, Wei Li
• Keywords: Apatite, Biomedical, Composite Beads, Monetite, Silica, Water Glass

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