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Nmr relaxation reveals modifications in rubber phase dynamics during long-term degradation of high-impact polystyrene (HIPS)

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Nmr relaxation reveals modifications in rubber phase dynamics during long-term degradation of high-impact polystyrene (HIPS)

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dc.contributor.author Vilaplana, Francisco es_ES
dc.contributor.author Karlsson, Sigbritt es_ES
dc.contributor.author Ribes-Greus, A. es_ES
dc.contributor.author Schade, Christian es_ES
dc.contributor.author Nestle, Nikolaus es_ES
dc.date.accessioned 2018-03-18T05:28:01Z
dc.date.available 2018-03-18T05:28:01Z
dc.date.issued 2011 es_ES
dc.identifier.issn 0032-3861 es_ES
dc.identifier.uri http://hdl.handle.net/10251/99499
dc.description.abstract [EN] The microstructure of rubber-modified polystyrene after thermal ageing at 90 °C and multiple extrusion was analyzed by time-domain nuclear magnetic resonance (TD-NMR) in a non-destructive manner. The transverse magnetization decay behaviour observed in TD-NMR was related to the total rubber fraction and its cross-linking density. The data reveal different mechanisms of long-term rubber degradation in high-impact polystyrene (HIPS) during thermo-oxidation and multiple processing: Multiple processing causes a slight increase in the cross-linking density of the rubber phase, without appreciably altering the total amount of rubber fraction. Thermo-oxidation is accompanied by a significant overall decrease of the rubber fraction, an increase of the cross-linking density, and a pronounced increase of the non-crosslinked fraction (chain ends and fragmented segments). The NMR results correlate well with spectroscopic observations and moderately with macroscopic mechanical properties. © 2011 Elsevier Ltd. All rights reserved. es_ES
dc.description.sponsorship The lab support for the NMR studies by Jens Schober and Cornelia Willax is gratefully acknowledged. FV thanks the economical support of the Spanish Ministry of Science and Innovation through the FPU doctoral program. en_EN
dc.language Inglés es_ES
dc.publisher ELSEVIER SCI LTD es_ES
dc.relation.ispartof Polymer es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject High-impact polystyrene (HIPS) es_ES
dc.subject Nuclear magnetic resonance relaxation es_ES
dc.subject Polybutadiene rubber es_ES
dc.subject Chain-ends es_ES
dc.subject Cross-linking density es_ES
dc.subject Crosslinked es_ES
dc.subject Different mechanisms es_ES
dc.subject High-impact polystyrene es_ES
dc.subject Multiple extrusion es_ES
dc.subject Multiple processing es_ES
dc.subject NMR relaxation es_ES
dc.subject Non destructive es_ES
dc.subject Phase dynamics es_ES
dc.subject Thermal ageing es_ES
dc.subject Time domain es_ES
dc.subject Transverse magnetization es_ES
dc.subject Degradation es_ES
dc.subject Mechanical properties es_ES
dc.subject Oxidation es_ES
dc.subject Polybutadienes es_ES
dc.subject Polystyrenes es_ES
dc.subject Resonance es_ES
dc.subject Rubber es_ES
dc.subject Nuclear magnetic resonance es_ES
dc.subject.classification MAQUINAS Y MOTORES TERMICOS es_ES
dc.title Nmr relaxation reveals modifications in rubber phase dynamics during long-term degradation of high-impact polystyrene (HIPS) es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.polymer.2011.02.005 es_ES
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Máquinas y Motores Térmicos - Departament de Màquines i Motors Tèrmics es_ES
dc.description.bibliographicCitation Vilaplana, F.; Karlsson, S.; Ribes-Greus, A.; Schade, C.; Nestle, N. (2011). Nmr relaxation reveals modifications in rubber phase dynamics during long-term degradation of high-impact polystyrene (HIPS). Polymer. 52(6):1410-1416. doi:10.1016/j.polymer.2011.02.005 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://doi.org/10.1016/j.polymer.2011.02.005 es_ES
dc.description.upvformatpinicio 1410 es_ES
dc.description.upvformatpfin 1416 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 52 es_ES
dc.description.issue 6 es_ES
dc.relation.pasarela 40697 es_ES


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