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Synergistic effect of hydroxyapatite nanopowders' high crystallinity and non-ordered particles’ boundary regions on low-temperature sintering

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2012
435.pdf (204.1Kb)
Authors
Lukić, Miodrag J.
Veselinović, Ljiljana
Marković, Smilja
Uskoković, Dragan
Conference object (Published version)
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Abstract
One of the goals in the field of biomaterials for bone and dental tissue reconstruction is preparation of highly sinterable hydroxyapatite nanopowder; low-temperature sintering behavior could provide microstructural refinement yielding to dense nanostructured ceramics as well as preservation of surface functional groups important for bioactivity. Today, there is plenty of hydroxyapatite nanopowders prepared by different methods but with very distinct sintering behavior. Generally, powder properties like average particle size and size distribution, morphology, crystallinity and specific surface area are important. However, since sintering process could be governed by different mechanisms, particles’ interior and boundary regions microstructure can play a significant role. This study is about sintering behavior of hydroxyapatite nanopowders with different crystallinity and microstructure of nanoparticles’ boundary regions. Three hydroxyapatite nanopowders were synthesized and their detai...led analyses (XRD, FTIR, SSA, FESEM, TEM) were performed. TEM results imply three types of systems: type I - low crystallinity/non-ordered boundaries, type II – middle crystallinity/ordered boundaries and type III - high crystallinity/nonordered boundaries. Sintering curves showed that type III exhibits the lowest sintering temperature, around 900 °C. The obtained results stressed the importance of the synergistic effects of particles’ microstructural characteristics and properties of nanopowder, directing towards the most valuable consumption of supplied energy during sintering process.

Keywords:
hydroxyapatite / low-temperature sintering / nanopowders
Source:
The Fourteenth Annual Conference YUCOMAT 2012: Programme and the Book of Abstracts, 2012, 75-75
Publisher:
  • Belgrade : Materials Research Society of Serbia
Projects:
  • Molecular designing of nanoparticles with controlled morphological and physicochemical characteristics and functional materials based on them (RS-45004)
[ Google Scholar ]
URI
http://dais.sanu.ac.rs/123456789/438
Collections
  • ITN SANU - Opšta kolekcija / ITS SASA - General collection
Institution
Институт техничких наука САНУ / Institute of Technical Sciences of SASA
TY  - CONF
AU  - Lukić, Miodrag J.
AU  - Veselinović, Ljiljana
AU  - Marković, Smilja
AU  - Uskoković, Dragan
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/438
AB  - One of the goals in the field of biomaterials for bone and dental tissue reconstruction is preparation of highly sinterable hydroxyapatite nanopowder; low-temperature sintering behavior could provide microstructural refinement yielding to dense nanostructured ceramics as well as preservation of surface functional groups important for bioactivity. Today, there is plenty of hydroxyapatite nanopowders prepared by different methods but with very distinct sintering behavior. Generally, powder properties like average particle size and size distribution, morphology, crystallinity and specific surface area are important. However, since sintering process could be governed by different mechanisms, particles’ interior and boundary regions microstructure can play a significant role. This study is about sintering behavior of hydroxyapatite nanopowders with different crystallinity and microstructure of nanoparticles’ boundary regions. Three hydroxyapatite nanopowders were synthesized and their detailed analyses (XRD, FTIR, SSA, FESEM, TEM) were performed. TEM results imply three types of systems: type I - low crystallinity/non-ordered boundaries, type II – middle crystallinity/ordered boundaries and type III - high crystallinity/nonordered boundaries. Sintering curves showed that type III exhibits the lowest sintering temperature, around 900 °C. The obtained results stressed the importance of the synergistic effects of particles’ microstructural characteristics and properties of nanopowder, directing towards the most valuable consumption of supplied energy during sintering process.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Fourteenth Annual Conference YUCOMAT 2012: Programme and the Book of Abstracts
T1  - Synergistic effect of hydroxyapatite nanopowders' high crystallinity and non-ordered particles’ boundary regions on low-temperature sintering
SP  - 75
EP  - 75
ER  - 
@conference{
author = "Lukić, Miodrag J. and Veselinović, Ljiljana and Marković, Smilja and Uskoković, Dragan",
year = "2012",
url = "http://dais.sanu.ac.rs/123456789/438",
abstract = "One of the goals in the field of biomaterials for bone and dental tissue reconstruction is preparation of highly sinterable hydroxyapatite nanopowder; low-temperature sintering behavior could provide microstructural refinement yielding to dense nanostructured ceramics as well as preservation of surface functional groups important for bioactivity. Today, there is plenty of hydroxyapatite nanopowders prepared by different methods but with very distinct sintering behavior. Generally, powder properties like average particle size and size distribution, morphology, crystallinity and specific surface area are important. However, since sintering process could be governed by different mechanisms, particles’ interior and boundary regions microstructure can play a significant role. This study is about sintering behavior of hydroxyapatite nanopowders with different crystallinity and microstructure of nanoparticles’ boundary regions. Three hydroxyapatite nanopowders were synthesized and their detailed analyses (XRD, FTIR, SSA, FESEM, TEM) were performed. TEM results imply three types of systems: type I - low crystallinity/non-ordered boundaries, type II – middle crystallinity/ordered boundaries and type III - high crystallinity/nonordered boundaries. Sintering curves showed that type III exhibits the lowest sintering temperature, around 900 °C. The obtained results stressed the importance of the synergistic effects of particles’ microstructural characteristics and properties of nanopowder, directing towards the most valuable consumption of supplied energy during sintering process.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Fourteenth Annual Conference YUCOMAT 2012: Programme and the Book of Abstracts",
title = "Synergistic effect of hydroxyapatite nanopowders' high crystallinity and non-ordered particles’ boundary regions on low-temperature sintering",
pages = "75-75"
}
Lukić MJ, Veselinović L, Marković S, Uskoković D. Synergistic effect of hydroxyapatite nanopowders' high crystallinity and non-ordered particles’ boundary regions on low-temperature sintering. The Fourteenth Annual Conference YUCOMAT 2012: Programme and the Book of Abstracts. 2012;:75-75
Lukić, M. J., Veselinović, L., Marković, S.,& Uskoković, D. (2012). Synergistic effect of hydroxyapatite nanopowders' high crystallinity and non-ordered particles’ boundary regions on low-temperature sintering.
The Fourteenth Annual Conference YUCOMAT 2012: Programme and the Book of AbstractsBelgrade : Materials Research Society of Serbia., null, 75-75. 
Lukić Miodrag J., Veselinović Ljiljana, Marković Smilja, Uskoković Dragan, "Synergistic effect of hydroxyapatite nanopowders' high crystallinity and non-ordered particles’ boundary regions on low-temperature sintering" null (2012):75-75

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