About: Stability and Rheology of Dilute TiO2

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Apparent wall slip (AWS) effect, accompanying flow of colloidal dispersions in confined geometries, can be important for applications of nanofluids in heat transfer and microfluidics. In this contribution, a series of stable dilute TiO2 aqueous dispersions was prepared and tested for possible presence of the AWS effect by using a novel viscometric technique. The nanofluids, prepared from TiO2 rutile or anatase nanopowders by ultrasonic dispersing in water, were stabilized by adjusting pH to maximum zeta potential. The resulting stable nanofluid samples were extremely dilute, below 0.7 vol%. All they manifest Newtonian behavior with the fluidities following the Einstein formula. No case of important slip contribution was detected: the Navier slip coefficient about 2 mm Pa-1s-1 would affect the apparent fluidity data in a 100 mkm gap by less than 1% Apparent wall slip (AWS) effect, accompanying flow of colloidal dispersions in confined geometries, can be important for applications of nanofluids in heat transfer and microfluidics. In this contribution, a series of stable dilute TiO2 aqueous dispersions was prepared and tested for possible presence of the AWS effect by using a novel viscometric technique. The nanofluids, prepared from TiO2 rutile or anatase nanopowders by ultrasonic dispersing in water, were stabilized by adjusting pH to maximum zeta potential. The resulting stable nanofluid samples were extremely dilute, below 0.7 vol%. All they manifest Newtonian behavior with the fluidities following the Einstein formula. No case of important slip contribution was detected: the Navier slip coefficient about 2 mm Pa-1s-1 would affect the apparent fluidity data in a 100 mkm gap by less than 1% (en)
Title	Stability and Rheology of Dilute TiO2 – Water Nanofluids Stability and Rheology of Dilute TiO2 – Water Nanofluids (en)
skos:prefLabel	Stability and Rheology of Dilute TiO2 – Water Nanofluids Stability and Rheology of Dilute TiO2 – Water Nanofluids (en)
skos:notation	RIV/67985858:_____/11:00358867!RIV12-AV0-67985858
http://linked.open...avai/predkladatel	Ústav chemických procesů Akademie Věd ČR, v.v.i.
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA104/08/0428), P(GA104/09/0972), Z(AV0Z40720504)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Pěnkavová, Věra Wein, Ondřej Tihon, Jaroslav
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav chemických procesů AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	231842
http://linked.open...ai/riv/idVysledku	RIV/67985858:_____/11:00358867
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	nanofluids; zeta potential; aws viscometry (en)
http://linked.open.../riv/klicoveSlovo	aws viscometry nanofluids zeta potential
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[78617E61344F]
http://linked.open...i/riv/nazevZdroje	Nanoscale Research Letters
http://linked.open...in/vavai/riv/obor	CI
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Effect of the surface roughness, ohmic resistance, and electrode kinetics on autocalibration of electrodiffusion friction probes Wall effects in flowing microdispersion liquids: apparent slip and electrokinetic potential
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	6
http://linked.open...iv/tvurceVysledku	Pěnkavová, Věra Tihon, Jaroslav Wein, Ondřej
http://linked.open...ain/vavai/riv/wos	000290525700137
http://linked.open...n/vavai/riv/zamer	Investigation of multiphase reacting systems for the design of processes important in synthesis and preparation of novel materials, in energy production and in environmental protection
issn	1931-7573
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1186/1556-276X-6-273
is http://linked.open...avai/riv/vysledek of	Stability and Rheology of Dilute TiO2 – Water Nanofluids Stability and Rheology of Dilute TiO2 – Water Nanofluids

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