Novel Composite of Nano-Sized SiO2/Chitosan Induce the Growth of HAp Crystal

Abstract:

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A novel hybrid material of chitosan/nano-sized SiO2/hydroxyapatite (HAp) composite was prepared through a biomimetic approach. HAp deposited in situ on the surface of chitosan/ nano-sized SiO2 composite film in simulate body fluid (SBF) solution at 36.5°C. The X-ray diffraction (XRD) and scanning electron microscopy (SEM) were performed to study composition and morphological characteristics of the HAp crystal. The results indicated that nano-sized SiO2 dispersed in the chitosan film provided initial nucleation sites for the growth of the HAp in SBF solution by adsorbing further PO4 3−, Ca2+ due to the induction of HAp formed. The strength of the composite was largely improved because of the addition of nano-sized SiO2.

Info:

Periodical:

Key Engineering Materials (Volumes 361-363)

Main Theme:

Edited by:

Guy Daculsi and Pierre Layrolle

Pages:

483-486

DOI:

10.4028/www.scientific.net/KEM.361-363.483

Citation:

S. W. Huang et al., "Novel Composite of Nano-Sized SiO2/Chitosan Induce the Growth of HAp Crystal ", Key Engineering Materials, Vols. 361-363, pp. 483-486, 2008

Online since:

November 2007

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Price:

$35.00

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