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Viscosity measurements of poly(ethyleneglycol) 400 [PEG 400] at temperatures from 293 K to 348 K and at pressures up to 50 MPa using the vibrating wire technique

2019-09-25Journal article Restricted access
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dc.contributor.authorSequeira, Maria C. M.
dc.contributor.authorPereira, Marta F. V.
dc.contributor.authorAvelino, Helena Maria Da Nóbrega Teixeira
dc.contributor.authorCaetano, Fernando
dc.contributor.authorFareleira, João
dc.date.accessioned2019-07-19T09:05:12Z
dc.date.available2019-07-19T09:05:12Z
dc.date.issued2019-09-25
dc.description.abstractThe article reports new measurements of the viscosity of Poly(ethyleneglycol) 400 [PEG 400] in the range (293-348) K and pressures up to 50 MPa. Complementary measurements of the density of the same sample of PEG 400 have been made covering the ranges of temperature and pressure, (293-353) K and (0.1-50) MPa, respectively. The viscosity measurements were performed using the vibrating wire technique in the forced mode of oscillation and the density measurements were carried out with an Anton Paar vibrating U-tube densimeter. The density raw data were corrected for viscosity effects. The overall uncertainty of the viscosity measurements is estimated to be less than +/- 2% for viscosities up to 68 mPa s and less than +/- 2.6% for higher viscosities. The densities have an estimated overall uncertainty of +/- 0.2%. The rheological behaviour of Poly(ethylene Glycol) 400 has also been studied, using a cone-plate Brookfield viscometer, in a temperature range between (293 and 333) K. The measurements were carried out at shear rates up to 20 s(-1) and shear stresses up to 2.20 Pa and have evidenced Newtonian behaviour. The viscosity data obtained were correlated by means of a modified hard-sphere based correlation technique. The relative root mean square, rms, deviation of the experimental results from the correlation equations is 0.54%, and their bias is practically zero. The density data obtained were correlated using a Tait-type equation. As a complement of the present study, the surface tension of PEG 400 was measured by the pendant drop method. This study aims to be useful for viscosity measurements using capillary viscometers. As far as the authors are aware, the present viscosity measurements are the first results to be published for PEG 400 at pressures higher than atmospheric pressure.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSEQUEIRA, Maria C. M.; [et al] – Viscosity measurements of poly(ethyleneglycol) 400 [PEG 400] at temperatures from 293 K to 348 K and at pressures up to 50 MPa using the vibrating wire technique. Fluid Phase Equilibria. ISSN 0378-3812. Vol. 496 (2019), pp. 7-16pt_PT
dc.identifier.doi10.1016/j.fluid.2019.05.012pt_PT
dc.identifier.issn0378-3812
dc.identifier.issn1879-0224
dc.identifier.urihttp://hdl.handle.net/10400.21/10335
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationUID/QUI/00100/2019 - FCTpt_PT
dc.relation.publisherversionhttps://reader.elsevier.com/reader/sd/pii/S0378381219302225?token=6043CB0DFC3E910CAB44D920512B9B13D596FE6C205699711D60690ACB5E17EFFFCBB30C8E6FD3C413760CEC3688AACDpt_PT
dc.subjectPolyethylene glycolpt_PT
dc.subjectPEGpt_PT
dc.subjectViscositypt_PT
dc.subjectVibrating wirept_PT
dc.subjectHigh pressurept_PT
dc.titleViscosity measurements of poly(ethyleneglycol) 400 [PEG 400] at temperatures from 293 K to 348 K and at pressures up to 50 MPa using the vibrating wire techniquept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FQUI%2F00100%2F2013/PT
oaire.citation.endPage16pt_PT
oaire.citation.startPage7pt_PT
oaire.citation.titleFluid Phase Equilibriapt_PT
oaire.citation.volume496pt_PT
oaire.fundingStream5876
person.familyNameAvelino
person.familyNameCaetano
person.familyNameFareleira
person.givenNameHelena Maria da Nóbrega Teixeira
person.givenNameFernando
person.givenNameJoão
person.identifier.ciencia-id9615-6337-5695
person.identifier.ciencia-idDE17-708E-317F
person.identifier.ciencia-id8E1B-F54C-8ABD
person.identifier.orcid0000-0001-6516-2164
person.identifier.orcid0000-0002-6821-1694
person.identifier.orcid0000-0002-8442-9386
person.identifier.ridH-8325-2012
person.identifier.scopus-author-id14919229800
person.identifier.scopus-author-id7004474824
person.identifier.scopus-author-id6603840268
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication9465688d-83d6-42bb-9ec3-c86eb756f458
relation.isAuthorOfPublication7734157f-7114-47ec-ae01-884fd60a64fa
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relation.isAuthorOfPublication.latestForDiscoveryab3bfbcc-4968-4aac-bc63-381857d1927b
relation.isProjectOfPublication42e2c67b-cc38-4020-bc4d-950bf9ae00c9
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