Rheometric Study of Apparent Wall Slip in Microdispersions

0360997 - ÚCHP 2012 RIV SE eng C - Conference Paper (international conference)
Večeř, M. - Pěnkavová, Věra - Wein, Ondřej
Rheometric Study of Apparent Wall Slip in Microdispersions.
Annual Transactions the Nordic Rheology Society. Göteborg: Chalmers Reproservice, 2011 - (Sjoqvist, M.), s. 307-312. ISBN 978-952-15-2589-6. ISSN 1601-4057.
[The Nordic Rheology Conference. Helsinki (FI), 08.06.2011-10.06.2011]
R&D Projects: GA ČR GA104/09/0972; GA ČR GA104/07/1110
Institutional research plan: CEZ:AV0Z40720504
Keywords : apparent wall slip * microdispersion * rheology
Subject RIV: CI - Industrial Chemistry, Chemical Engineering
http://arl-repository.lib.cas.cz/nusl/UCHP-M/cav_un_epca-0360997_01.pdf

Rheometric evidence of the apparent wall slip (AWS) effect is the main subject of this paper. It is necessary, to treat together primary viscometric data from viscometric configurations with different hydraulic radii (e.g. different gap thickness h). The simultaneous using of several configurations is the feature which distinguishes a classical viscometry from the AWS viscometry. Three various sensors for the AWS rotational viscometry are considered here. Two conventional sensors – coaxial cylinders (ZZ) and parallel plates (PP) – are compared with a novel sensor, the coaxial Morse-cone (KK), which seems to be most suitable for the viscometry under AWS effect. The related viscometric theory, based on two material functions – for fluidity and slip - is implemented to the PC software AWSWork, which supports the joint treating of primary viscometric data from different sensors.
Permanent Link: http://hdl.handle.net/11104/0198419