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Title: Infrared absorption spectroscopy of some bio-glasses before and after immersion in various solutions
Authors: Badry, Kh M El
Moustaffa, F A
Azooz, M A
Batal, F H El
Issue Date: Nov-2000
Publisher: NISCAIR-CSIR, India
Abstract: The infrared absorption spectra of some selected bioglasses were investigated. By using powdered samples of the bioglasses, detailed infrared absorption spectra were generated over the 4000-200 cm-1 range, both before and after the glass powder were immersed in the studied solutions for 1 hr at 95°C. The absorption spectra differed with the bioglass composition and with the type of the leaching solution. Characteristic absorption bands due to vibrations of BO3, BO4, AlO4, MgO4 or ZnO4 groups could he separately identified or combined as composite bands with that due to silicate chains. The Si-O non-bridging stretching band at ~950 cm-1 in the mid region and a far infrared band at ~280 cm-1 due possibly to Na cations vibration were the hands most sensitive to immersion hydration process. Changes were also seen in the appearance of absorption hands at ~1320, ~1460 and ~1640 cm-1 which could be attributed to phosphate, carbonate and water, respectively.
Page(s): 741-761
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.38(11) [November 2000]

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