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Modelling elongational and shear rheology of two LDPE melts

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dc.title Modelling elongational and shear rheology of two LDPE melts en
dc.contributor.author Rolón-Garrido, Víctor Hugo
dc.contributor.author Pivokonský, Radek
dc.contributor.author Filip, Petr
dc.contributor.author Zatloukal, Martin
dc.contributor.author Wagner, Manfred Hermann
dc.relation.ispartof Rheologica Acta
dc.identifier.issn 0035-4511 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2009
utb.relation.volume 48
utb.relation.issue 6
dc.citation.spage 691
dc.citation.epage 697
dc.type article
dc.language.iso en
dc.publisher Springer New York LLC en
dc.identifier.doi 10.1007/s00397-009-0366-8
dc.relation.uri http://www.springerlink.com/content/d27335653w7r0472/
dc.subject reologie cs
dc.subject MSF model cs
dc.subject smykový tok cs
dc.subject elongační tok cs
dc.subject Rheology en
dc.subject MSF model en
dc.subject Shear flow en
dc.subject Elongational flow en
dc.description.abstract V této praci byly analyzovány experimentální reologické data dvou tavenin LDPE pomocí MSF modelu. Bylo zjištěno, že pro kvantitativní modelování obou toků bylo nutné použít pouze tři nelineární viskoelastické materiálové parametry. cs
dc.description.abstract Experimental data of two low-density polyethylene (LDPE) melts at 200 degrees C 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, a(2), and the structural parameter, beta, are found to be equal for the two melts considered, the melts differ in the parameter f(max)(2) describing maximum stretch of the polymer chains. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1001000
utb.identifier.rivid RIV/70883521:28110/09:63508106!RIV10-MSM-28110___
utb.identifier.obdid 43860823
utb.identifier.scopus 2-s2.0-67549091247
utb.identifier.wok 000267058300008
utb.source j-riv
utb.contributor.internalauthor Pivokonský, Radek
utb.contributor.internalauthor Zatloukal, Martin
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