TY  - JOUR
TI  - Production and Characterization of Wollastonite Particles Reinforced Hydroxyapatite Composite Granules for Biomedical Applications
AB  - Hydroxyapatite (HA) is the main inorganic component of bone and teeth and having high bioactivity,biocompatibility and osteointegration capability. Recently, wollastonite (WT) has been offered toreinforce HA to further increase biocompatibility and also mechanical strength. The focus of this study was to produce and characterize HA/WT composite granules with spray drying. Commercial WTparticles were introduced into the lab made HA nanoparticles in order to prepare a slurry for spraydrying. Spray dried HA/WT granules (SD-HA/WT) were investigated in terms of thermo-physicalproperties by SEM, FTIR, granule size analyzer, TG-DTA and XRD. The investigations proved thatcomposite granules were comprised both HA and WT phases. The granules contained HAnanoparticles (as a matrix) and WT particles that entangled in the HA matrix and on the surface of thegranules. The heat treatment at 750 °C led to the calcination of synthesized HA nanoparticles, while,the nanoparticles were sintered together by the heat treatment at 1000 °C and 1250 °C, thus themechanical integrity of the granules was developed. The phase structure of the granules wasremained stable (dominantly crystalline HA and WT) after the heat treatments. However, WTreinforcement caused to decrease the dehydroxylation temperature of HA and other calciumphosphates were formed after the heat treatment at 1000 °C. Rietveld Refinement analysis revealedthat composite granules had 82.3% and 15.6% HA and WT phases, respectively. Spherical shapedgranules with 36 μm median size (d50) would be used in thermal spraying, 3d printing or hotpressingprocesses.
AU  - BASTAN, FATIH ERDEM
AU  - Ustel, Fatih
AU  - Karaarslan, Onurcan
DO  - 10.21205/deufmd.2021236701
PY  - 2021
JO  - Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen ve Mühendislik Dergisi
VL  - 23
IS  - 67
SN  - 1302-9304
SP  - 1
EP  - 9
DB  - TRDizin
UR  - http://search/yayin/detay/423064
ER  -