Preparation and properties of modif ied hydroxyapatites/ highdensity polyethylene artificial bone composites

The surface of Hydroxyapatite ( HA) particles was modified by monophosphatase coupling agent . Themodified HA/ high density polyethylene ( HDPE) artificial bone composites were prepared with the fusing and mixingmethod. The composites were investigated by IR , TGA and burning test ; the rheological properties , thermal andmechanical properties were studied in detail. The result s show that the modified composites possess better rheologi2cal and mechanical properties than those of unmodified ones , good thermal properties and homogeneity. The artifi2cial bone biomaterials with good mechanical properties can be prepared through cont rolling the content of modifiedHA or HDPE in the composites.