Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 109: Issue 1
Thermal analysis and SANS characterisation of hybrid materials for biomedical applications
Authors:
J. J. H. Lancastre Physics and Accelerators Unit, Nuclear and Technological Institute, E.N. 10, 2686–953, Sacavém, Portugal

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F. M. A. Margaça Physics and Accelerators Unit, Nuclear and Technological Institute, E.N. 10, 2686–953, Sacavém, Portugal

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L. M. Ferreira Physics and Accelerators Unit, Nuclear and Technological Institute, E.N. 10, 2686–953, Sacavém, Portugal

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A. N. Falcão Physics and Accelerators Unit, Nuclear and Technological Institute, E.N. 10, 2686–953, Sacavém, Portugal

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I. M. Miranda Salvado Department of Glass and Ceramics Engineering, CICECO, Aveiro University, 3810–193, Aveiro, Portugal

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M. S. M. S. Nabiça Department of Glass and Ceramics Engineering, CICECO, Aveiro University, 3810–193, Aveiro, Portugal

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M. H. V. Fernandes Department of Glass and Ceramics Engineering, CICECO, Aveiro University, 3810–193, Aveiro, Portugal

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L. Almásy Laboratory for Neutron Scattering, PSI, 5232, Villigen, Switzerland
Research Institute for Solid State Physics and Optics, POB 49, 1525, Budapest, Hungary

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Pages:
413–418
Online Publication Date:
24 Mar 2011
Publication Date:
01 Jul 2012
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-011-1459-z
Keywords:
Ormosils; Sol–gel; Thermal analysis; SANS; Bioactive material; Simulated body fluid
Restricted access

Abstract

Silicate hybrid materials were prepared by the sol–gel process with the addition of x mass% of zirconium propoxide (x = 0 and 1). The thermal behaviour as well as the influence of Zr addition was studied by thermal gravimetric analysis and differential thermal analysis. The microstructure evolution with temperature was investigated by X-ray diffraction and small-angle neutron scattering. It was found that the beginning of polymer degradation occurs at a higher temperature in the material prepared with addition of Zr than in the one prepared without. At the nanometric scale, the materials prepared without Zr show smooth interfaces, whereas those with Zr present a mass fractal structure. This structure is also observed in the material without Zr after thermal treatment at 200 °C. The results showed that bioactivity is favoured by mass fractal structures in comparison with one consisting of smooth surfaces.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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