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dc.contributor.authorOlmo, Cristian
dc.contributor.authorAmestoy Muñoz, Hegoi
dc.contributor.authorCasas, María Teresa
dc.contributor.authorMartínez, Juan Carlos
dc.contributor.authorFranco, Lourdes
dc.contributor.authorSarasua Oiz, José Ramón
dc.contributor.authorPuiggalí, Jordi
dc.date.accessioned2018-06-14T13:00:43Z
dc.date.available2018-06-14T13:00:43Z
dc.date.issued2017-08
dc.identifier.citationPolymers 9(8) : (2016) // Article ID 322es_ES
dc.identifier.issn2073-4360
dc.identifier.urihttp://hdl.handle.net/10810/27530
dc.description.abstractUltrasound micro-molding technology was successfully applied to prepare nanocomposites based on a poly(epsilon-caprolactone) (PCL) matrix and multi-walled carbon nanotubes (MWCNTs). Optimization of processing parameters (i.e., amplitude, force and time) was crucial to obtain nanocomposites without any evidence of degradation, high material saving and short processing time (7-8 s). Good dispersion of nanotubes was achieved after processing previously formed solvent casting films. This dispersion was even partially detected in pieces directly obtained from powder mixtures of both components. Incorporation of MWCNTs had a remarkable influence on melting and crystallization processes, which were systematically studied by time resolved synchrotron experiments. Results indicated higher melting and crystallization temperatures for the nanocomposite, with temperature differences higher than 5 degrees C. Carbon nanotubes were effective nucleating agents and had an influence on crystallinity, crystallization rate and even on lamellar morphology, which was evaluated by analysis of the correlation function of small angle diffraction profiles. Crystallinity within lamellar stacks was lower for the solvent casting nanocomposite, but in this case lamellae underwent a thickening process during heating that accounted for the increase in the melting temperature. Crystallization from the melt rendered similar lamellar morphologies at the end of the process due to a lamellar insertion mechanism.es_ES
dc.description.sponsorshipThe authors acknowledge support from MINECO and FEDER (MAT2015-69547-R and MAT2015-69367-R), and the Generalitat de Catalunya (2014SGR188). Diffraction experiments were performed at NCD beamline at ALBA Synchrotron with the collaboration of ALBA staff.es_ES
dc.language.isoenges_ES
dc.publisherMDPIes_ES
dc.relationinfo:eu-repo/grantAgreement/MINECOes_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subjectmicro-molding technologyes_ES
dc.subjectultrasoundses_ES
dc.subjectnanocompositeses_ES
dc.subjectcarbon nanotubeses_ES
dc.subjectcrystallizationes_ES
dc.subjectmorphological parameterses_ES
dc.subjectsynchrotron radiationes_ES
dc.subjectresolved x-rayes_ES
dc.subjectcrystal-structurees_ES
dc.subjectbehaviores_ES
dc.subjecthybrides_ES
dc.subjectthermoplasticses_ES
dc.subjectpolyesterses_ES
dc.subjectscatteringes_ES
dc.subjectvibrationes_ES
dc.titlePreparation of Nanocomposites of Poly(ε-caprolactone) and Multi-Walled Carbon Nanotubes by Ultrasound Micro-Molding. Influence of Nanotubes on Melting and Crystallizationes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.holder2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).es_ES
dc.rights.holderAtribución 3.0 España*
dc.relation.publisherversionhttp://www.mdpi.com/2073-4360/9/8/322es_ES
dc.identifier.doi10.3390/polym9080322
dc.departamentoesIngeniería Minera y Metalúrgica y Ciencia de los Materialeses_ES
dc.departamentoeuMeatze eta metalurgia ingeniaritza materialen zientziaes_ES


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2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access
article distributed under the terms and conditions of the Creative Commons Attribution
(CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Except where otherwise noted, this item's license is described as 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).