A model for the viscosity of dilute smectite gels
2011 (English)In: Physics and Chemistry of the Earth, ISSN 1474-7065, E-ISSN 1873-5193, Vol. 36, no 17-18, 1792-1798 p.Article in journal (Refereed) Published
A simple yet accurate model describing the viscosity of dilute suspensions of sodium montmorillonite in dilute homoionic solutions is presented. Taking the clay particle and the surrounding clouds of ions as a whole as an uncharged but soft, coin-like particle, the Huggins’ equation for a suspension of uncharged particles is extended in the model to account for not only the primary and the secondary electroviscous effects, but also the multi-particle interaction. The agreements between the predicted and measured results are excellent. The Huggins’ coefficient obtained compares favorably with available data, while the intrinsic viscosity reduces to the Simha’s equation in the large limit of ionic strength, suggesting that the model is robust.
Place, publisher, year, edition, pages
Elsevier, 2011. Vol. 36, no 17-18, 1792-1798 p.
Viscosity model, Sodium montmorillonite, Dilute suspension, Electroviscous effects, Intrinsic viscosity, Huggins’ equation
IdentifiersURN: urn:nbn:se:kth:diva-84251DOI: 10.1016/j.pce.2011.07.081ISI: 000299195200039ScopusID: 2-s2.0-82955247605OAI: oai:DiVA.org:kth-84251DiVA: diva2:499257
QC 201202212012-02-132012-02-132012-02-21Bibliographically approved