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Effect of a silica nanofiller on the structure, dynamics and thermostability of LDPE in LDPE/silica nanocomposites

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dc.affiliation.dptoUC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Químicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Materiales compuestos poliméricos e interfaseses
dc.contributor.authorOlmos Díaz, Dania
dc.contributor.authorGonzalez Gaitano, Gustavo
dc.contributor.authorGonzález Benito, Francisco Javier
dc.contributor.funderMinisterio de Ciencia e Innovación (España)es
dc.contributor.funderMinisterio de Educación, Cultura y Deporte (España)es
dc.date.accessioned2021-07-02T10:18:40Z
dc.date.available2021-07-02T10:18:40Z
dc.date.issued2015
dc.description.abstractThe effect of the presence of silica nanoparticles on the structure, thermal stability and dynamics of low density polyethylene, LDPE, has been studied. Different loads of nanoparticles were dispersed within a LDPE matrix using high energy ball milling (HEBM) as a preliminary processing step to ensure a uniform dispersion of nanofiller to obtain nanocomposites in the form of films by hot pressing. The monitoring of the FTIR-ATR spectra of the samples as a function of the temperature has proven as a convenient method to study the interactions at a molecular scale between the polyethylene chains and the nanofiller. Band splitting observed in the bending and rocking modes of the ethylene groups indicated formation of crystalline phases whereas the analysis of absorbance band ratios from the stretching vibrations of PE accounted for the behavior of the polymer bulk. No evidence of strong polymer–filler interactions were found with the exception of a thermal relaxation process observed at 55 °C. Structural, morphological and thermal characterization of the nanocomposites did not reveal remarkable changes at low loads of filler, indicating that in the case of LDPE–silica nanocomposites, where weak interactions between the polymer and filler occur, the volume fraction of nanoparticles must be relatively high in order to produce changes in the bulk properties.en
dc.description.sponsorshipThe authors acknowledge financial support from projects MAT2007-65752 and MAT2010-16815, and the assistance of S. Martínez with the TGA and FTIR-ATR experiments.en
dc.format.extent6
dc.identifier.bibliographicCitationOlmos, D., González-Gaitano, G. & González-Benito, J. (2015). Effect of a silica nanofiller on the structure, dynamics and thermostability of LDPE in LDPE/silica nanocomposites. RSC Advances, 5(44), pp. 34979–34984.en
dc.identifier.doihttps://doi.org/10.1039/C5RA00738K
dc.identifier.issn2046-2069
dc.identifier.publicationfirstpage34979
dc.identifier.publicationissue44
dc.identifier.publicationlastpage34984
dc.identifier.publicationtitleRSC Advancesen
dc.identifier.publicationvolume5
dc.identifier.urihttps://hdl.handle.net/10016/32987
dc.identifier.uxxiAR/0000016854
dc.language.isoeng
dc.publisherRoyal Society of Chemistryen
dc.relation.projectIDGobierno de España. MAT2010-16815es
dc.relation.projectIDGobierno de España. MAT2007-65752es
dc.rights© The Royal Society of Chemistry 2015en
dc.rights.accessRightsopen accessen
dc.subject.ecienciaQuímicaes
dc.titleEffect of a silica nanofiller on the structure, dynamics and thermostability of LDPE in LDPE/silica nanocompositesen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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