Study of the Mechanical Property of Magnetite/ Hydroxyapatite/ Chitosan Nano-Composite

摘要

Magnetite/hydroxyapatite/chitosan rods have been prepared via in situ compositing method. The mechanical properties were characterized and evaluated for suitability as a bone repair materials. Scanning electron microscopy (SEM) was carried out to investigate the microstructure of CS/HA/Fe{sub}3O{sub}4 composite. Effect of inorganic content on the mechanical properties of the CS/HA/Fe{sub}3O{sub}4 composite was also investigated. It was observed that the mechanical properties of the composite in the dry condition improved as the percentage of CS content increased. Mechanical properties of CS/HA/Fe{sub}3O{sub}4 composite rod are much better than that prepared via traditional method. Bending strength, bending modulus of CS/HA/Fe{sub}3O{sub}4 composite are 118.5MPa, 2.3GPa, respectively. All of these material properties are twice or three times stronger compared with that of nature bone of human being.