Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/50454
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dc.contributor.authorBernabei, Marco-
dc.contributor.authorMoreno, Ángel J.-
dc.contributor.authorColmenero, Juan-
dc.date.accessioned2014-02-20T10:29:36Z-
dc.date.available2014-02-20T10:29:36Z-
dc.date.issued2008-12-15-
dc.identifier.issn0031-9007-
dc.identifier.urihttp://hdl.handle.net/2445/50454-
dc.description.abstractWe present molecular dynamics simulations of a simple model for polymer melts with intramolecular barriers. We investigate structural relaxation as a function of the barrier strength. Dynamic correlators can be consistently analyzed within the framework of the mode coupling theory of the glass transition. Control parameters are tuned in order to induce a competition between general packing effects and polymer-specific intramolecular barriers as mechanisms for dynamic arrest. This competition yields unusually large values of the so-called mode coupling theory exponent parameter and rationalizes qualitatively different observations for simple bead-spring and realistic polymers. The systematic study of the effect of intramolecular barriers presented here also establishes a fundamental difference between the nature of the glass transition in polymers and in simple glass formers.-
dc.format.extent4 p.-
dc.format.mimetypeapplication/pdf-
dc.language.isoeng-
dc.publisherAmerican Physical Society-
dc.relation.isformatofReproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevLett.101.255701-
dc.relation.ispartofPhysical Review Letters, 2008, vol. 101, p. 255701-1-255701-4-
dc.relation.urihttp://dx.doi.org/10.1103/PhysRevLett.101.255701-
dc.rights(c) American Physical Society, 2008-
dc.subject.classificationDinàmica molecular-
dc.subject.classificationPolímers-
dc.subject.classificationMacromolècules-
dc.subject.classificationMatèria condensada-
dc.subject.otherMolecular dynamics-
dc.subject.otherPolymers-
dc.subject.otherMacromolecules-
dc.subject.otherCondensed matter-
dc.titleDynamic arrest in polymer melts: competition between packing and intramolecular barriers-
dc.typeinfo:eu-repo/semantics/article-
dc.typeinfo:eu-repo/semantics/publishedVersion-
dc.identifier.idgrec633745-
dc.date.updated2014-02-20T10:29:36Z-
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess-
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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