| Popis: |
Type 1 collagen and sintered hydroxyapatite pellets were immersed in supersaturated calcium phosphate solutions, the pH of which ranged from from 3.5 to 5.4. On collagen, TCP precipitated as a “carpet-like” coverage at low pH, but as the pH increased, efflorescences of DCPD crystals grew on top of TCP. However on HAP, only DCPD efflorescences were obtained. Each of these efflorescences contains up to 16 petals, the angles between which are in close agreement with the proposition that the closed-packed {110} plane is the common plane between adjacent petals. Frank's method was also employed to analyse the crystallography of the HAP-DCPD interface, and the Burgers vectors of interfacial dislocations have thus been predicted. |
