PREPARATION AND MECHANICAL-PROPERTIES OF CALCIUM-PHOSPHATE COPOLY-L-LACTIDE COMPOSITES

New artificial bone materials were prepared using calcium phosphates, hydroxyapatite and beta-tricalicum phosphate, and copoly-L-lactide, CP LA. Calcium phosphate powder and CPLA were mixed at 453 K for 10 min w ith various mixing ratios. Scanning electron microscope observations i ndicated that the composites of beta-tricalicum phosphate and CPLA wer e homogeneously dispersed and highly adhesive. Young's modulus of the composites was the same as bone, and bending strength was over half th at of bone. The improvement of Young's modulus compared to the origina l two materials was due to a composite effect. The composites are expe cted to be usable as artificial bone materials.