**Fellow, The American Ceramic Society.
Preparation of Transparent Glass Sponges via Replica Method using High-Purity Silica
Article first published online: 29 OCT 2009
© 2009 The American Ceramic Society
Journal of the American Ceramic Society
Volume 93, Issue 1, pages 111–114, January 2010
How to Cite
Bucharsky, E. C., Schell, K. G., Oberacker, R. and Hoffmann, M. J. (2010), Preparation of Transparent Glass Sponges via Replica Method using High-Purity Silica. Journal of the American Ceramic Society, 93: 111–114. doi: 10.1111/j.1551-2916.2009.03366.x
J. Hanan—contributing editor
- Issue published online: 21 DEC 2009
- Article first published online: 29 OCT 2009
- Manuscript No. 26269. Received May 13, 2009; approved August 11, 2009.
A polymer sponge replication technique was used to prepare open-celled transparent glass sponges. Stabilized high concentration aqueous slurries from SiO2 nanopowders were used to infiltrate polyurethane polymers with cell sizes of 20 ppi (pores per inch), which served as templates. The optimal conditions for obtaining transparent glass sponges are discussed, such as temperature for both, burning out the polymer and the subsequent sintering of the remaining SiO2 structure. X-ray diffractometry, scanning electron microscopy, and light microscopy were used to characterize the resulting sponge structure.