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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 284-287Texture Evaluation of Sol-Gel Derived Mesoporous...

Texture Evaluation of Sol-Gel Derived Mesoporous Bioactive Glass

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Abstract:

Recent years mesoporous bioactive glasses (MBGs) have become important biomaterials because of their high surface area and the superior bioactivity. Various studies have reported that when MBGs implanted in a human body, hydroxyl apatite layers, constituting the main inorganic components of human bones, will form on the MBG surfaces to increase the bioactivity. Therefore, MBGs have been widely applied in the fields of tissue regeneration and drug delivery. The sol-gel process has replaced the conventional glasses process for MBG synthesis because of the advantages of low contamination, chemical flexibility and lower calcination temperature. In the sol-gel process, several types of surfactants were mixed with MBG precursor solutions to generate micelle structures. Afterwards, these micelles decompose to form porous structures after calcination. Although calcination is significant for contamination, crystalline and surface area in MBG, to the best of the authors’ knowledge, only few systematic studies related to calcination were reported. This study correlated the calcination parameters and the microstructure of MBGs. Microstructure evaluation was characterized by transmission electron microscopy and nitrogen adsorption/desorption. The experimental results show that the surface area and the pore size of MBGs decreased with the increasing of the calcination temperature, and decreased dramatically at 800°C due to the formation of crystalline phases.

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Periodical:

Applied Mechanics and Materials (Volumes 284-287)

Pages:

230-234

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.284-287.230

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Online since:

January 2013

Authors:

Yu Jen Chou, Chi Jen Shih, Shao Ju Shih

Keywords:

Hydroxyl Apatite, Mesoporous Bioactive Glass, Morpholoy, Sol-Gel (SG), Transmission Electron Microscopy (TEM)

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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