Work
accidents are a risk for every human being who carries out a job, many workers
still often ignore the K3 (Occupational Health and Safety) element so that this
causes work accident victims to increase every year. Based on BPJS Employment
data, around 35% of work accident victims in Indonesia experience bone damage.
Efforts to repair bone damage are by replacing it with another object that has
the same properties and function. In the world of modern medicine,
hydroxyapatite material is widely used as a replacement for damaged human
bones, because its structure is very similar and compatible with human bones.
Therefore, the need for hydroxyapatite biomaterials is increasing. As time goes
by, hydroxyapatite can be obtained naturally, one of which is by using cow
bones.
In
this research, the hydrothermal method was used with the aim of the resulting
hydroxyapatite having high crystallinity and purity as well as good morphology.
The hydrothermal method uses a temperature of 121°C with time variations of 25
minutes, 50 minutes, 75 minutes and 100 minutes, using an autoclave. Then the
final hydroxyapatite product was characterized using XRD (X-Ray Diffraction) to
determine its purity and crystallinity, and using SEM (Scanning Electron
Microscope) to determine the surface morphology and the influence of
hydrothermal time.
After
XRD test the 25 minute specimen produced crystallinity 76,38% with purity
86,56%, the 50 minute specimen produced cystallinity 81,30% with purity 86,04%,
the 75 minute specimen produced crystallinity 79,42% with purity of 85.40%, and
the 100 minute specimen produced a crystallinity of 73.82% with a purity of
85.03%. Meanwhile, for the SEM test results in all specimens, the particle
shape tends to be the same, namely granular.
Keywords :
Biomaterial, Hydroxyapatite, Hydrothermal, Bovine.