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Title: Calcium phosphate glasses: silanation process and effect on the bioactivity behavior of Glass-PMMA composites
Author: Morejon Alonso, Lizette
Delgado García-Menocal, José Ángel
Tarragó Aymerich, Mariona
Alvarez Guichard, Julio Andrés
Garcia Vallès, Maite
Martínez Manent, Salvador
Ginebra, Maria Pau
Keywords: Calci
Issue Date: Feb-2014
Publisher: Wiley
Abstract: This article presents the results of a study of the efficiency of silanation process of calcium phosphate glasses particles and its effect on the bioactivity behavior of glasspoly( methyl methacrylate) (PMMA) composites. Two different calcium phosphate glasses: 44.5CaO-44.5P2O5-11Na2O (BV11) and 44.5CaO-44.5P2O5-6Na2O-5TiO2 (G5) were synthesized and treated with silane coupling agent. The glasses obtained were characterized by Microprobe and BET while the efficiency of silanation process was determined using Fourier Transform Infrared Spectroscopy (FTIR), X-ray Photoelectron Spectroscopy (XPS) and Thermal Analysis (DTA and TG)techniques. The content of coupling agent chemically tightly bond to the silanated glasses ascended to 1.69 6 0.02 wt % for BV11sil glass and 0.93 6 0.01 wt % for G5sil glass. The in vitro bioactivity test carried out in Simulated Body Fluid (SBF) revealed certain bioactive performance with the use of both silanated glasses in a 30% (by weight) as filler of the PMMA composites because of a superficial deposition of an apatite-like layer with low content of CO3 22 and HPO4 22 in its structure after soaking for 30 days occurred. VC 2013 Wiley Periodicals,Inc. J Biomed Mater Res Part B: Appl Biomater 00B: 000-000, 2013.
Note: Versió postprint del document publicat a: 10.1002/jbmb.32996
It is part of: Journal of Biomedical Materials Research Part B: Applied Biomaterials , 2014, vol. 102, num. 2, p. 205-213
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ISSN: 1552-4973
Appears in Collections:Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)

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