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Bioactivity of tape cast and sintered bioactive glass-ceramic in simulated body fluid

Paper ID Volume ID Publish Year Pages File Format Full-Text
13454 856 2002 8 PDF Available
Title
Bioactivity of tape cast and sintered bioactive glass-ceramic in simulated body fluid
Abstract

A common ceramic processing technique, tape casting, was used to produce thin, flexible sheets of bioactive glass (Bioglass® 45S5) particulate in an organic matrix. Tape casting offers the possibility of producing three-dimensional shapes, as the final material is built up layer by layer. Bioactive glass tapes were sintered together to form small discs for in vitro bioactivity testing in simulated body fluid (SBF). Four different sintering schedules were investigated: 800, 900, and 1000°C for 3 h; and 1000°C for 6 h. Each schedule produced a crystalline material of major phase Na2Ca2Si3O9. Tape cast and sintered bioactive glass-ceramic processed at 1000°C formed crystalline hydroxyapatite layers after 20–24 h in SBF as indicated by Fourier transform infrared spectroscopy, Scanning electron microscopy, and EDS data. FTIR revealed that the greatest amount of hydroxyapatite formation after 2 h was observed for samples sintered at 900°C. The differences in bioactive response were likely caused by the variation in the extent of sintering and, consequently, the amount of surface area available for reaction with SBF.

Keywords
Bioactive glass-ceramic; Hydroxyapatite; SBF; FTIR; Tape casting
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Bioactivity of tape cast and sintered bioactive glass-ceramic in simulated body fluid
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 23, Issue 12, June 2002, Pages 2599–2606
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us