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dc.contributor.author
Horst, María Fernanda
dc.contributor.author
Quinzani, Lidia Maria
dc.contributor.author
Failla, Marcelo Daniel
dc.date.available
2017-09-22T13:54:55Z
dc.date.issued
2014-01-01
dc.identifier.citation
Horst, María Fernanda; Quinzani, Lidia Maria; Failla, Marcelo Daniel; Rheological and barrier properties of nanocomposites of HDPE and exfoliated Montmorillonite; Sage Publications Ltd; Journal Of Thermoplastic Composite Materials; 27; 1; 1-1-2014; 106-125
dc.identifier.issn
0892-7057
dc.identifier.uri
http://hdl.handle.net/11336/24912
dc.description.abstract
Polyethylene (PE) / clay nanocomposites were prepared by melt mixing using polyethylene grafted with maleic anhydride (PEg) as compatibilizer. Concentrations between 2 and 15 wt% of an organophilic montmorillonite (MMT) and concentration ratios of 1:1, 2:1 and 3:1 of PEg/MMT were employed. The materials were characterized using X-ray diffraction, scanning electron microscopy (SEM) and thermogravimetry. The SEM images show that the presence of PEg gives place to a large degree of exfoliation at all clay concentrations. For 5 wt% MMT, the best degree of exfoliation is obtained for a 2:1 ratio of PEg/MMT. This ratio also gives place to the largest increase of the elastic modulus, mainly at low frequencies, with respect to that of the corresponding matrix. As the clay concentration increases, for a 2:1 ratio of PEg/MMT, the dynamic moduli increases showing pseudo solid-like behavior at clay concentrations higher than 8 wt%. Moreover, the nanocomposites show rheological properties that are affected by annealing at 200°C signaling further exfoliation or improved platelet and tactoid distributions. The oxygen permeability of PE gradually decreases with clay concentration, reaching a maximum reduction of ~30% for 15 wt% MMT.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Sage Publications Ltd
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Nanocomposites
dc.subject
Polyethylene
dc.subject
Rheological Properties
dc.subject
Permeability
dc.subject.classification
Compuestos
dc.subject.classification
Ingeniería de los Materiales
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
Rheological and barrier properties of nanocomposites of HDPE and exfoliated Montmorillonite
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-05-02T20:59:49Z
dc.journal.volume
27
dc.journal.number
1
dc.journal.pagination
106-125
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Los Angeles
dc.description.fil
Fil: Horst, María Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
dc.description.fil
Fil: Quinzani, Lidia Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
dc.description.fil
Fil: Failla, Marcelo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
dc.journal.title
Journal Of Thermoplastic Composite Materials
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1177/0892705712443248
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://journals.sagepub.com/doi/10.1177/0892705712443248
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