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Hybrid HDPE/MCM-41 nanocomposites: crystalline structure and viscoelastic behaviour

dc.contributor.authorCerrada, María L.
dc.contributor.authorPérez, Ernesto
dc.contributor.authorLourenço, J. P.
dc.contributor.authorCampos, João M.
dc.contributor.authorRibeiro, M. R.
dc.date.accessioned2013-01-04T12:03:41Z
dc.date.available2013-01-04T12:03:41Z
dc.date.issued2010
dc.date.updated2013-01-03T10:39:12Z
dc.description.abstractPolyethylene-based nanocomposites have been prepared by in situ polymerisation of ethylene with mesostructured MCM-41 within a large range of nanofiller concentrations. The structural, thermal and viscoelastic studies have shown that the use of mesoporous MCM-41 as catalyst carrier and its further presence in the final material is an effective route for the successful attainment of nanocomposites. Data shows that minimal changes in crystallinity are observed but crystallites become thicker as MCM-41 content is raised in the nanocomposites. A confinement effect is found and a delay in the crystallisation process of the macrochains within pores and channels is observed. These novel self-reinforced nanocomposites present an enhanced rigidity, which becomes more important as temperature is raised. Accordingly, they exhibit an improved mechanical performance without varying the final processing temperature since Tm is the same for all of the specimens. In agreement with other works, it is confirmed that the MCM-41 acts as promoter for polyethylene degradation, an easier degradability being observed in these nanocomposites.por
dc.identifier.citationCerrada, María L.; Pérez, Ernesto; Lourenço, João Paulo; Campos, João M.; Rosário Ribeiro, M. Hybrid HDPE/MCM-41 nanocomposites: crystalline structure and viscoelastic behaviour, Microporous and Mesoporous Materials, 130, 1-3, 215-223, 2010.por
dc.identifier.issn1387-1811
dc.identifier.otherAUT: JLO01215;
dc.identifier.urihttp://hdl.handle.net/10400.1/2047
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.subjectNanocompositespor
dc.subjectMCM-41por
dc.subjectEthylene polimerisationpor
dc.subjectStiffnesspor
dc.titleHybrid HDPE/MCM-41 nanocomposites: crystalline structure and viscoelastic behaviourpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage223por
oaire.citation.issue1-3por
oaire.citation.startPage215por
oaire.citation.titleMicroporous and Mesoporous Materialspor
oaire.citation.volume130por
person.familyNameLourenço
person.givenNameJoão P.
person.identifier634248
person.identifier.ciencia-idF81F-A1F0-2A7C
person.identifier.orcid0000-0002-0501-6672
person.identifier.ridA-7758-2008
person.identifier.scopus-author-id57195730600
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationf66ab886-d989-4c1d-9550-527507723c26
relation.isAuthorOfPublication.latestForDiscoveryf66ab886-d989-4c1d-9550-527507723c26

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