Rheology of the particulate model suspensions

Tomi Kemppinen*, Martti Toivakka

*Korresponderande författare för detta arbete

Forskningsoutput: Kapitel i bok/konferenshandlingFörord/efterord

Sammanfattning

Rheological properties of model colloidal and non-colloidal suspensions were investigated. Colloidal bidisperse suspensions were studied with rotational rheometry and monodisperse suspensions studied with Stokesian dynamics simulations at high volume concentrations. Capillary and rotational rheometry was used in non-colloidal suspensions studies. Viscosity minimum for bidisperse suspensions was found when fraction of small particles was 40%. Numerical simulations show that increasing electrolyte concentration decreases the viscosity of the suspension, which was contributed to the reduction of the hydrodynamic radius of the particles. Non-colloidal hollow glass sphere suspensions were measured with the rotational rheometry and data could be fitted with Krieger-Dougherty model. Capillary rheometry results showed apparent shear thinning behavior.

OriginalspråkEngelska
Titel på gästpublikationRheological materials in process industry / ReoMaT Final Report
RedaktörerMarkku kataja
Sidor10-20
Antal sidor11
Utgåva2428
StatusPublicerad - 2008
MoE-publikationstypB2 Del av bok eller annan forskningsbok

Publikationsserier

NamnVTT Tiedotteita - Valtion Teknillinen Tutkimuskeskus
Nummer2428
ISSN (tryckt)1235-0605

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