A structural approach in the study of bones: fossil and burnt bones at nanosize scale

Giampaolo Piga, Maria Dolors Baró, Irati Golvano Escobal, David Gonçalves, Calil Makhoul, Ana Amarante, Assumpció Malgosa, Stefano Enzo, Sebastiano Garroni

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Abstract

© 2016, Springer-Verlag Berlin Heidelberg. We review the different factors affecting significantly mineral structure and composition of bones. Particularly, it is assessed that micro-nanostructural and chemical properties of skeleton bones change drastically during burning; the micro- and nanostructural changes attending those phases manifest themselves, amongst others, in observable alterations to the bones colour, morphology, microstructure, mechanical strength and crystallinity. Intense changes involving the structure and chemical composition of bones also occur during the fossilization process. Bioapatite material is contaminated by an heavy fluorination process which, on a long-time scale reduces sensibly the volume of the original unit cell, mainly the a-axis of the hexagonal P63/m space group. Moreover, the bioapatite suffers to a varying degree of extent by phase contamination from the nearby environment, to the point that rarely a fluorapatite single phase may be found in fossil bones here examined. TEM images supply precise and localized information, on apatite crystal shape and dimension, and on different processes that occur during thermal processes or fossilization of ancient bone, complementary to that given by X-ray diffraction and Attenuated Total Reflection Infrared spectroscopy. We are presenting a synthesis of XRD, ATR-IR and TEM results on the nanostructure of various modern, burned and palaeontological bones.
Original languageEnglish
Article number1031
JournalApplied Physics A: Materials Science and Processing
Volume122
Issue number12
DOIs
Publication statusPublished - 1 Dec 2016

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    Piga, G., Baró, M. D., Escobal, I. G., Gonçalves, D., Makhoul, C., Amarante, A., Malgosa, A., Enzo, S., & Garroni, S. (2016). A structural approach in the study of bones: fossil and burnt bones at nanosize scale. Applied Physics A: Materials Science and Processing, 122(12), [1031]. https://doi.org/10.1007/s00339-016-0562-1