"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Thermal and spectroscopic investigation of sol-gel derived aluminosilicate bioglass matrices

V. SIMON1,* , D. ENIU2, A. GRITCO1, S. SIMON1

Affiliation

  1. Babes-Bolyai University, Faculty of Physics, 400084 Cluj-Napoca,Romania
  2. University of Medicine and Pharmacy, Faculty of Pharmacy, 400010 Cluj-Napoca, Romania

Abstract

Aluminosilicate samples obtained by sol-gel route, using as SiO2 source silicic acid or tetraethylorthosilicate (TEOS) are investigated by differential thermal analysis and infrared spectroscopy. Thermal analysis points out that the removal of free water takes place at significant lower temperature for samples prepared with silicic acid. Infrared active functional groups were identified from FT-IR spectra. The shift to lower wavenumbers recorded for IR absorption bands corresponding to Si- O-Si bonds and Al-O vibrations as the samples are prepared with TEOS as SiO2 source show a stiffer and more disordered network in these samples as compared with that of the samples obtained with silicic acid..

Keywords

Thermal analysis, FT-IR spectroscopy, Sol-gel, Aluminoslilicates.

Submitted at: March 23, 2007
Accepted at: Nov. 16, 2007

Citation

V. SIMON, D. ENIU, A. GRITCO, S. SIMON, Thermal and spectroscopic investigation of sol-gel derived aluminosilicate bioglass matrices, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 11, pp. 3368-3371 (2007)