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Freeze casting of porous bioactive glass and bioceramics
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Mallick, Kajal (2009) Freeze casting of porous bioactive glass and bioceramics. In: The 10th International Conference on Ceramic Processing Science (ICCPS- 10), Inuyama, Aichi, Japan, May 25–28, 2008. Published in: Journal of the American Ceramic Society, Vol.92 (No.1 Suppl. 1). S85-S94. doi:10.1111/j.1551-2916.2008.02784.x ISSN 0002-7820.
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Official URL: http://dx.doi.org/10.1111/j.1551-2916.2008.02784.x
Abstract
Highly porous network structures of hydroxyapatite, tricalcium phosphates, a bioactive glass as well as their composites have been fabricated using variations of camphene-, glycerol-, and ice-based freeze-casting techniques. The ball-milled slurries containing 10%-60% solid loading were cast at ambient temperature, followed by sublimation at temperatures between -70 degrees and 60 degrees C. The green body was sintered in air to a maximum temperature of 1100 degrees C for 4 h, which produced excellent three-dimensionally (3-D) interconnected structures with open pores. The nature of the pore channels varied from dendritic, columnar, and cellular to mixed geometry, with dense outer shells in some cases, depending on the particular method used. A monotonic increase in porosity with loading was observed with a decrease in the loading volume. Microstructural analysis was used for porous structures to extract information on geometry, porosity, and pore size distribution. This proved particularly useful to assess whether some of the 3-D structures produced by these methods are suitable for tissue engineering applications. Differential thermal analysis-thermogravimetry, scanning electron microscopy, X-ray diffraction, and density were used to characterize precursor powders, slurry, and sintered products.
Item Type: | Conference Item (Paper) | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TP Chemical technology |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||
Journal or Publication Title: | Journal of the American Ceramic Society | ||||
Publisher: | Wiley-Blackwell Publishing Ltd. | ||||
ISSN: | 0002-7820 | ||||
Official Date: | January 2009 | ||||
Dates: |
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Volume: | Vol.92 | ||||
Number: | No.1 Suppl. 1 | ||||
Number of Pages: | 10 | ||||
Page Range: | S85-S94 | ||||
DOI: | 10.1111/j.1551-2916.2008.02784.x | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Open Access (Creative Commons) | ||||
Conference Paper Type: | Paper | ||||
Title of Event: | The 10th International Conference on Ceramic Processing Science (ICCPS- 10) | ||||
Type of Event: | Conference | ||||
Location of Event: | Inuyama, Aichi, Japan | ||||
Date(s) of Event: | May 25–28, 2008 |
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