R. Moreno—contributing editor
Dispersion of Aqueous Alumina Suspensions with Biodegradable Polymers
Article first published online: 13 APR 2011
© 2011 The American Ceramic Society
Journal of the American Ceramic Society
Volume 94, Issue 10, pages 3276–3281, October 2011
How to Cite
Xiao, C., Chen, H., Yu, X., Gao, L. and Guo, L. (2011), Dispersion of Aqueous Alumina Suspensions with Biodegradable Polymers. Journal of the American Ceramic Society, 94: 3276–3281. doi: 10.1111/j.1551-2916.2011.04526.x
This work was financially supported by the Science and Technology Pillar Program of Jiangsu Province (BE2009169), China and also funded by the Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions.
- Issue published online: 4 OCT 2011
- Article first published online: 13 APR 2011
- Manuscript No. 28783. Received October 15, 2010; approved February 24, 2011.
Polyaspartic acid (PASP) and polyepoxysuccinic acid (PESA) were proved to be strong biodegradable candidates to replace traditional ceramic dispersant polyacrylic acid (PAA) as evidenced by rheological measurements. At low dosages (0.2 wt%), alumina suspensions with PAA were completely flocculated, while those with PESA as dispersant obtained good dispersion, and exhibited much lower viscosity than those with PASP. With further small addition of citric acid (CA), dispersion of alumina suspensions was greatly enhanced than those with single dispersant PASP or PESA. Combination of PASP/PESA–CA as ceramic dispersant is effective in dispersing aqueous alumina suspensions until high solid loading.