Biomedical Engineering Reference
In-Depth Information
constant. The maximum allowable temperature of the PVC film used for capsule II is 140˚C,
and the treatment temperature was set to be 135˚C due to the temperature limitation. The
pressure was kept at 40MPa using pressure regulator. After the treatment, the vessel was
naturally cooled down to a room temperature, and the capsules removed from the vessel. In
order to investigate the effects of treatment time on the HA coating properties, the treatment
time was varied within the range of 3-24 hours.
Fig. 12. Schematic illustrations of a double layered capsule in a cross section view.
Fig. 13. Schematic illustration of the hydrothermal method and the capsule used in this study.
