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Interparticle forces and rheological properties of ceramic suspensions
YKI – Ytkemiska institutet.
YKI – Ytkemiska institutet.
1999 (English)In: Key Engineering Materials, ISSN 1013-9826, E-ISSN 1662-9795, Vol. 159-160, 119-126. p.Article in journal (Refereed)
Abstract [en]

Dispersants have a profound influence on the suspension properties of ceramic slurries. We will illustrate the effect of polymers and polyelectrolytes on the colloidal stability and the rheological properties in both aqueous and non-aqueous media. We have related direct measurements of polymerically induced interparticle forces to the rheological properties of different ceramic systems. Simple estimates of the effective volume fractions of non-aqueous, polymerically stabilized silicon nitride suspensions gave a reasonable correspondence between calculated and measured polymer layer thicknesses. We show that PAA stabilize zirconia by an electrosteric mechanism; also, we found an excellent agreement between the presence of bridging attraction and poor colloidal stability at low surface coverage. In addition, the van der Waals forces have been quantified by theoretical calculations and direct measurements.

Place, publisher, year, edition, pages
1999. Vol. 159-160, 119-126. p.
Keyword [en]
Rheology, ceramics, processing, colloid, suspension, Hamaker, electrosteric, viscosity, polymer, dispersant
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-27076OAI: oai:DiVA.org:ri-27076DiVA: diva2:1054080
Note
A1154Available from: 2016-12-08 Created: 2016-12-08Bibliographically approved

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