BIPHASIC CALCIUM PHOSPHATE SCAFFOLDS DERIVED FROM HYDROTHERMALLY SYNTHESIZED POWDERS
Autoři:
Ana S. Neto; José M. F. Ferreira
Působiště autorů:
Aveiro, Portugal
; Department of Materials and Ceramic Engineering, CICECO, University of Aveiro
Vyšlo v časopise:
Lékař a technika - Clinician and Technology No. 3, 2018, 48, 77-83
Kategorie:
Original research
Souhrn
Biphasic calcium phosphate (BCP) scaffolds were successfully produced by robocasting. The BCP powder was prepared by hydrothermal synthesis (150 °C for 4 h) and calcined at 1000 °C. The as-obtained powder was milled to obtain a suitable particle size distribution (PSD) for optimizing the rheological properties of the suspensions and pastes prepared thereof. Scaffolds with different pore dimensions (300×300, 500×500, 250×500 and 300×600 µm) were prepared by extruding the pastes through 410 µm diameter nozzles. The green scaffolds were dried and posteriorly sintered at 1100 °C. The compressive strength of the sintered scaffolds was well within the range of the mechanical properties reported from cancellous bone, being intrinsically related with the particle size distribution. Moreover, the obtained scaffolds demonstrated to have good biomineralization ability. The obtained scaffolds by robocasting revealed to possess promising features for their applications in bone regeneration and tissue engineering.
Keywords:
biphasic calcium phosphates, hydrothermal synthesis, robocasting
Zdroje
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BiomedicínaČlánok vyšiel v časopise
Lékař a technika
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