Skip to main content

Reduction of Viscosity of Alumina Nanopowder Aqueous Suspensions by the Addition of Polyalcohols and Saccharides

Buy Article:

$51.00 plus tax (Refund Policy)


Flow behavior of nanosize alumina suspensions in the presence of polyalcohols was investigated. Viscosity of high solids content (35 vol%) alumina nanopowders was measured at room temperature. It was shown that after the first advancing shear rate branch, viscosity measurements show excellent reproducibility. All the suspensions showed the formation of large clusters, which are broken down as shear rate increases indicating reversible cluster breaking and reforming. Viscosity of suspensions decreases dramatically with up to 10 wt% polyalcohol addition. Only ethylene glycol showed an increase in viscosity indicating no interaction with the particle surface. The addition of polyalcohols is believed to prevent the formation of large and/or strong clusters by modifying the alumina particle surface. The exact nature and quantitative description of viscosity reduction by polyalcohol addition have yet to be established.

Document Type: Research Article


Affiliations: 1: Department of Chemistry, Koc University, Sariyer 034450, Istanbul, Turkey 2: Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011

Publication date: September 1, 2010

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more