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Evaluation of temperature-strain rate dependent uniaxial and planar elongational viscosities for branched LDPE polymer melt

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dc.title Evaluation of temperature-strain rate dependent uniaxial and planar elongational viscosities for branched LDPE polymer melt en
dc.contributor.author Zatloukal, Martin
dc.relation.ispartof Novel Trends in Rheology V
dc.identifier.issn 0094-243X Scopus Sources, Sherpa/RoMEO, JCR
dc.identifier.isbn 978-0-7354-1151-7
dc.date.issued 2013
utb.relation.volume 1526
dc.citation.spage 184
dc.citation.epage 193
dc.event.title International Conference on Novel Trends in Rheology V
dc.event.location Zlín
utb.event.state-en Czech Republic
utb.event.state-cs Česká republika
dc.event.sdate 2013-07-30
dc.event.edate 2013-07-31
dc.type conferenceObject
dc.language.iso en
dc.publisher American Institute of Physics (AIP) en
dc.identifier.doi 10.1063/1.4802613
dc.relation.uri http://proceedings.aip.org/resource/2/apcpcs/1526/1/184_1?bypassSSO=1
dc.subject Orifice die en
dc.subject Planar elongational viscosity en
dc.subject Uniaxial elongational viscosity en
dc.subject Cogswell model en
dc.subject Entrance pressure drop en
dc.subject Polymer melts en
dc.subject Capillary rheometer en
dc.subject Constitutive equations en
dc.description.abstract In this work, novel rectangle and circular orifice dies have been utilized for temperature-strain rate dependent planar and uniaxial elongational viscosity measurements for the LDPE polymer melt by using standard twin bore capillary rheometer and Cogswell model and the capability of three different constitutive equations (novel generalized Newtonian model, modified White-Metzner model, modified Leonov model) to describe the measured experimental data has been tested. It has been shown that chain branching causes the strain hardening occurrence in both, unixial and planar elongational viscosities and its maximum is shifted to the higher strain rates if the temperature is increased. The level of uniaxial elongational strain hardening for the branched LDPE sample has been found to be higher in comparison with the planar elongational viscosity within wide range of temperatures. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1003382
utb.identifier.obdid 43870337
utb.identifier.scopus 2-s2.0-84876893745
utb.identifier.wok 000319829500015
utb.source d-wok
dc.date.accessioned 2013-07-27T14:55:34Z
dc.date.available 2013-07-27T14:55:34Z
dc.rights.access openAccess
utb.contributor.internalauthor Zatloukal, Martin
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