Synthesis, characterization, and biological properties of composites of hydroxyapatite and hexagonal boron nitride.

Synthesis, characterization, and biological properties of composites of hydroxyapatite and hexagonal boron nitride.

J Biomed Mater Res B Appl Biomater. 2017 Nov 23;:

Authors: Unal S, Ekren N, Sengil AZ, Oktar FN, Irmak S, Oral O, Sahin YM, Kilic O, Agathopoulos S, Gunduz O

Abstract
Hydroxyapatite (HA), obtained from bovine bones, was successfully reinforced with hexagonal boron nitrite (h-BN). h-BN/HA composites, with BN content up to 1.5 wt %, were sintered at various temperatures between 1000 and 1300°C, in air. Well-sintered samples were obtained after sintering at 1200 and 1300°C. The presence of h-BN contributed to dense, fine, and well-crystallized microstructure. The results of X-ray diffraction analysis and FT-IR spectroscopy showed that the produced composites comprised biphasic β-TCP/HCA (HCA: carbonate partially substituted HA). High values of mechanical properties were achieved, namely compression strength 155 MPa for the sample 0.5% h-BN/HA and Vickers microhardness of 716 HV for the samples 1.5% h-BN/HA, both sintered at 1300°C. U2OS human bone osteosarcoma proliferation and cell viability showed no adverse effect in the presence of h-BN/HA, suggesting the potential use of the produced materials as safe biomaterials in bone tissue engineering. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2017.

PMID: 29168913 [PubMed - as supplied by publisher]

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