COMPETITIVE ADSORPTION OF CITRIC-ACID AND POLY(VINYL ALCOHOL) ONTO ALUMINA AND ITS INFLUENCE ON THE BINDER MIGRATION DURING DRYING

Authors
HIDBER PC GRAULE TJ GAUCKLER LJ
Citation
Pc. Hidber et al., COMPETITIVE ADSORPTION OF CITRIC-ACID AND POLY(VINYL ALCOHOL) ONTO ALUMINA AND ITS INFLUENCE ON THE BINDER MIGRATION DURING DRYING, Journal of the American Ceramic Society, 78(7), 1995, pp. 1775-1780
Citations number
31
Categorie Soggetti
Material Science, Ceramics
Journal title
Journal of the American Ceramic Society → ACNP
ISSN journal
00027820
Volume
78
Issue
7
Year of publication
1995
Pages
1775 - 1780
Database
ISI
SICI code
0002-7820(1995)78:7<1775:CAOCAP>2.0.ZU;2-5
Abstract
Poly(vinyl alcohol) (PVA) and citric acid (CA) are a commonly used bin der and dispersant, respectively, for aqueous Al2O3 slurries, The comp etitive adsorption of these additives on Al2O3 from aqueous solution w as studied, as was the influence of this competition on the binder mig ration in centrifugally cast compacts during the drying process, PVA d id not influence the adsorption behavior of CA. However, the adsorptio n of PVA on alpha-Al2O3 was strongly reduced by the presence of CA, Th is displacement of PVA by CA led to a drastically increased segregatio n of PVA during the drying process.