INTEC   05402
INSTITUTO DE DESARROLLO TECNOLOGICO PARA LA INDUSTRIA QUIMICA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Synthesis and characterization of semi-crystalline hidroxiapatites
Autor/es:
ADRIANA RICAURTE; LEILA B. ROMERO; IGNACIO RINTOUL
Lugar:
Puerto Iguazu
Reunión:
Congreso; 13º Congreso Internacional en Ciencia y Tecnologia de Metalurgia y Materiales; 2013
Institución organizadora:
Universidad Nacional de Misiones y Asociacion Argentina de Materiales
Resumen:
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Bone
fracture is most extended cause for disability in the World. In
addition, they are take an important part of health and pension
systems. The development of materials for bone fixing and restoration
is critical for the improvement of the life quality of afected
persons and to reduce the expenses of health and pension systems.
Hydroxyapatite based materials (HA) are one of the most promising
research fields in hard tissue engineering. The ideal material must
be able the be molded, carved, fastened and in-situ settled during
during surgery. It must acquire an intimal bonding to the contours
and relief of affected bones restore of the biomechanic function of
bones. Further, it must be quickly osteo-integrated and it must
provide the key components to promote and accelerate the growing of
natural bone. This contribution deals with the synthesis and
characterization of semi-crystalline HA. The main goal of the work
was to control the crystalline degree of HA varying the formulatioon
of the synthesis medium and the precipitation conditions. HA was
obtained by precipitation of 0.25 M of Ca(NO3)2.4H2O solution in 30%
(NH4)2HPO4 aqueous medium at 30ºC at pH between 7.5 y 10,5. The
samples were finely ground and studied using XDR. The spectra were
obtained using a Seifert JSO Debyeflex 2002 instrument. The results
were compared against femoral human bone obtained from a healthy male
adult deceased in 2012. The effect on the crystalline degree of HA of
different cations composing the pH compensatory solutions during the
precipitation process is particularly detailed.