Characterization of apatite from human teeth via XRD, FT-IR and TGA techniques

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Author listPankaew P., Hoonnivathana E., Sujinnapram S., Thamaphat K., Limsuwan P., Naemchanthara K.

PublisherTrans Tech Publications

Publication year2012

Volume number506

Start page90

End page93

Number of pages4

ISBN9783037854068

ISSN1022-6680

eISSN1662-8985

URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84860821586&doi=10.4028%2fwww.scientific.net%2fAMR.506.90&partnerID=40&md5=d67d7c59b79ab10b95a4e4de2fba1ad0

LanguagesEnglish-Great Britain (EN-GB)


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Abstract

Human teeth (HT) are natural composites which consist of nano hydroxyapatite (HAp) arranged in lamellae and bound to collagen. In present study, prepared HT powders with different ages were characterized by X-Ray Diffraction (XRD), Fourier transform infrared (FT-IR) and thermogravimetric anlysis (TGA) techniques. HT at age ranges of 1-10, 11-20, 21-30, 31-40, 41-50 and 51-60 years old were selected for tests. To prepare samples, human teeth were washed in boiling water for 1 h and left in 1 M KOH solution for 6 h to remove any organic material. After HT samples were cleaned with ultrasonic in ethanol, they were then finely grounded using agate mortar. The results from XRD indicate that the major diffraction peaks of all samples with different ages were very closely identified to that of stoichiometric HAp. All HT powders were found to be nanocrystalline structure. Furthermore, it was found that the decrease in HAp crystallinity seem to increase with higher age of 31-40 years old. To investigate chemical structure confirmed by FT-IR, All HT powders showed the band positions and function groups, which are similar to that of HAp. CO 3 2- group found in chemical structure indicates the structure of carbonated apatite. TGA results were found that the increase of weight loss seem to increase with higher age. ฉ (2012) Trans Tech Publications.


Keywords

Carbonated apatiteHuman teethX-Ray Diffraction


Last updated on 2023-15-10 at 07:36