Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/24543
Registo completo
Campo DC | Valor | Idioma |
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dc.contributor.author | Teixeira, P. F. | - |
dc.contributor.author | Hilliou, L. | - |
dc.contributor.author | Covas, J. A. | - |
dc.contributor.author | Maia, J. M. | - |
dc.date.accessioned | 2013-07-03T13:59:39Z | - |
dc.date.available | 2013-07-03T13:59:39Z | - |
dc.date.issued | 2013 | - |
dc.identifier.issn | 0035-4511 | por |
dc.identifier.uri | https://hdl.handle.net/1822/24543 | - |
dc.description.abstract | The most promising method capable of providing accurate measurements of the first and second normal-stress differences in shear flows at shear rates typical of polymer processing is the so-called hole-pressure method, but its use has not been as widespread as would be expected, namely due to the experimental difficulties associated with performing such experiments accurately. In this work, we use a small-scale modular slit die to assess the practical utility of the method for in-line monitoring of polymer melt flow. We provide a quantitative analysis of intrinsic error sources and use state-of-the-art data acquisition tools to minimize errors associated with pressure transducers. Our results demonstrate that the method can be used to accurately measure the viscosity and first normal-stress difference in melts but probably not the second normal-stress difference because the intrinsic errors are too high, even when the influence of all the potential error sources is minimized or eliminated. | por |
dc.description.sponsorship | The authors acknowledge the financial support of the Center for Layered Polymeric Systems (NSF grant 0423914) and of the Foundation for Science and Technology, Portugal, through grants SFRH/BD/25311/2005, POCI/ EME/62461/2004, and PPCDT/EME/62461/2004 | por |
dc.language.iso | eng | por |
dc.publisher | Springer | por |
dc.rights | restrictedAccess | por |
dc.subject | First normal-stress difference | por |
dc.subject | Second normal-stress difference | por |
dc.subject | Slit rheometry | por |
dc.subject | Polymer melt | por |
dc.subject | Polymer melts | por |
dc.title | Assessing the practical utility of the hole-pressure method for the in-line rheological characterization of polymer melts | por |
dc.type | article | - |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | http://link.springer.com/content/pdf/10.1007%2Fs00397-013-0695-5.pdf | por |
sdum.publicationstatus | published | por |
oaire.citationStartPage | 661 | por |
oaire.citationEndPage | 672 | por |
oaire.citationIssue | 7 | por |
oaire.citationTitle | Rheologica Acta | por |
oaire.citationVolume | 52 | por |
dc.identifier.doi | 10.1007/s00397-013-0695-5 | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Rheologica Acta | por |
Aparece nas coleções: | IPC - Artigos em revistas científicas internacionais com arbitragem |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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rheologica acta 2013 pressure hole.pdf Acesso restrito! | author copy | 820,49 kB | Adobe PDF | Ver/Abrir |