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dc.contributor.authorDiaz Calleja, Ricardo
dc.contributor.authorFriederichs, S.
dc.contributor.authorJaímes, C.
dc.contributor.authorSanchis, Jose Maria
dc.contributor.authorBelana Punseti, Juan
dc.contributor.authorCañadas Lorenzo, Juan Carlos
dc.contributor.authorDiego Vives, José Antonio
dc.contributor.authorMudarra López, Miguel
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física
dc.date.accessioned2020-10-19T17:39:49Z
dc.date.issued1998-05
dc.identifier.citationDiaz, R. [et al.]. Comparative study of mechanical and electrical relaxations in poly(etherimide). Part 2. "Polymer international", Maig 1998, vol. 46, núm. 1, p. 20-28.
dc.identifier.issn0959-8103
dc.identifier.urihttp://hdl.handle.net/2117/330450
dc.description.abstractThe curves describing the relaxation behaviour of poly(etherimide) at several frequencies shows in the dielectric lossÈtemperature plot c and b relax- ations centred at [95¡C and 100¡C, respectively, at 10 Hz. The glassÈrubber relaxation or a process appears at 225¡C at 10 Hz; at this temperature free charge conductivity and blocking electrode phenomena become dominant at fre- quencies below 10 Hz. The same three relaxations are observed by dynamic mechanical thermal analysis (DMS). The strength of the c and a relaxations can be estimated from the Ðtting of empirical relaxation functions, such as the FuossÈ Kirkwood and HavriliakÈNegami equations, to the dielectric data measured in the frequency domain. An electric model was used to separate the dipolar response from conductivity contributions in the glassÈrubber relaxation. Finally, the e†ect of water on the low-temperature relaxation has been demonstrated by dielectric and mechanical measurements.
dc.description.sponsorshipWe gratefully acknowledge the financial support of the European Commission for the ARPEGE network
dc.format.extent9 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Física
dc.subject.lcshThermoplastics--Mechanical properties
dc.subject.lcshDielectric relaxation
dc.subject.lcshElectric conductivity
dc.subject.otherPoly(etherimide)
dc.subject.otherDielectric permittivity
dc.subject.otherRelaxations
dc.subject.otherConductivity
dc.subject.otherInterfacial contributions
dc.titleComparative study of mechanical and electrical relaxations in poly(etherimide). Part 2
dc.typeArticle
dc.subject.lemacTermoplàstics -- Propietats mecàniques
dc.subject.lemacRelaxació dielèctrica
dc.subject.lemacConductivitat elèctrica
dc.contributor.groupUniversitat Politècnica de Catalunya. DILAB - Laboratori de física dels materials dielèctrics
dc.identifier.doi10.1002/(SICI)1097-0126(199805)46:1%3C20::AID-PI944%3E3.0.CO;2-U
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://onlinelibrary.wiley.com/doi/epdf/10.1002/%28SICI%291097-0126%28199805%2946%3A1%3C20%3A%3AAID-PI944%3E3.0.CO%3B2-U
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac29435141
dc.description.versionPostprint (published version)
dc.date.lift10000-01-01
local.citation.authorDiaz, R.; Friederichs, S.; Jaímes, C.; Sanchis, J.; Belana, J.; Cañadas, J.C.; Diego, J.; Mudarra, M.
local.citation.publicationNamePolymer international
local.citation.volume46
local.citation.number1
local.citation.startingPage20
local.citation.endingPage28


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