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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/restrictedAccess
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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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)