About: Modeling elongational and shear rheology of two LDPE melts

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Experimental data of two low-density polyethylene (LDPE) melts at 200C for both shear flow (transient and steady shear viscosity as well as transient and steady first normal stress coefficient) and elongational flow (transient and steady-state elongational viscosity) as published by Pivokonsky et al. (J Non- Newtonian Fluid Mech 135:58–67, 2006) were analysed using the molecular stress function model for broadly distributed, randomly branched molecular structures. For quantitative modelling of melt rheology in both types of flow and in a very wide range of deformation rates, only three nonlinear viscoelastic material parameters are needed: Whilst the rotational parameter, a2, and the structural parameter, β, are found to be equal for the two melts considered, the melts differ in the parameter f 2 max describing maximum stretch of the polymer chains. Experimental data of two low-density polyethylene (LDPE) melts at 200C for both shear flow (transient and steady shear viscosity as well as transient and steady first normal stress coefficient) and elongational flow (transient and steady-state elongational viscosity) as published by Pivokonsky et al. (J Non- Newtonian Fluid Mech 135:58–67, 2006) were analysed using the molecular stress function model for broadly distributed, randomly branched molecular structures. For quantitative modelling of melt rheology in both types of flow and in a very wide range of deformation rates, only three nonlinear viscoelastic material parameters are needed: Whilst the rotational parameter, a2, and the structural parameter, β, are found to be equal for the two melts considered, the melts differ in the parameter f 2 max describing maximum stretch of the polymer chains. (en)
Title	Modeling elongational and shear rheology of two LDPE melts Modeling elongational and shear rheology of two LDPE melts (en)
skos:prefLabel	Modeling elongational and shear rheology of two LDPE melts Modeling elongational and shear rheology of two LDPE melts (en)
skos:notation	RIV/67985874:_____/09:00328827!RIV10-AV0-67985874
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(IAA200600703), Z(AV0Z20600510), Z(MSM7088352101)
http://linked.open...iv/cisloPeriodika	6
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Filip, Petr Pivokonský, Radek
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 pro hydrodynamiku AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	326815
http://linked.open...ai/riv/idVysledku	RIV/67985874:_____/09:00328827
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Rheology; MSF model; Shear flow; Elongational flow; Strain hardening; Low-density polyethylene; Polymer melts (en)
http://linked.open.../riv/klicoveSlovo	Low-density polyethylene Polymer melts Rheology Strain hardening Elongational flow MSF model Shear flow
http://linked.open...odStatuVydavatele	DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV	[EE01D73E1FB6]
http://linked.open...i/riv/nazevZdroje	Rheologica Acta
http://linked.open...in/vavai/riv/obor	BK
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Investigation of flow behaviour for a novel class of metallocene-based polymers
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	48
http://linked.open...iv/tvurceVysledku	Filip, Petr Zatloukal, M. Pivokonský, Radek Rolón-Garrido, V. H. Wagner, M. H.
http://linked.open...ain/vavai/riv/wos	000267058300008
http://linked.open...n/vavai/riv/zamer	Dynamics of Fluid Systems and Transformation Processes in Hydrosphere Multifunctional Composite Systems Based on Natural and Synthetic Polymers
issn	0035-4511
number of pages	7 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Modeling elongational and shear rheology of two LDPE melts Modeling elongational and shear rheology of two LDPE melts Modeling elongational and shear rheology of two LDPE melts Modeling elongational and shear rheology of two LDPE melts

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