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dc.contributor.authorRomanini, Michela
dc.contributor.authorMartínez García, Julio Cesar
dc.contributor.authorTamarit Mur, José Luis
dc.contributor.authorRzosca, S. J.
dc.contributor.authorBarrio Casado, María del
dc.contributor.authorPardo Soto, Luis Carlos
dc.contributor.authorDrozd Rzosca, A.
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear
dc.date.accessioned2010-05-26T12:22:32Z
dc.date.available2010-05-26T12:22:32Z
dc.date.created2009-11-14
dc.date.issued2009-11-14
dc.identifier.citationRomanini, M. [et al.]. Scaling the dynamics of orientationally disordered mixed crystals. "Journal of chemical physics", 14 Novembre 2009, vol. 131, núm. 18, p. 184504-1-184504-6.
dc.identifier.issn0021-9606
dc.identifier.urihttp://hdl.handle.net/2117/7383
dc.description.abstractThe evolution of the primary relaxation time of orientationally disordered (OD) mixed crystals [(CH3)2C(CH2OH)2]1−X[(CH3)C(CH2OH)3]X, with 0<X ≤ 0.5, on approaching the glass temperature (Tg) is discussed. The application of the distortion-sensitive, derivative-based procedure revealed a limited adequacy of the Vogel–Fulcher–Tammann parametrization and a superiority of the critical-like description τ∝(T−TC)−ϕ′, ϕ′=9–11.5, and TC ∼ Tg−10 K. Basing on these results as well as that of Drozd-Rzoska et al. [J. Chem. Phys. 129, 184509 (2008)] the question arises whether such behavior may be suggested as the optimal universal pattern for dynamics in vitrifying OD crystals (plastic crystals). The obtained behavior is in fair agreement with the dynamic scaling model(DSM)[R. H. Colby, Phys. Rev. E 61, 1783(2000)], originally proposed for vitrifying molecular liquids and polymers. The application of DSM made it possible to estimate the size of the cooperatively rearranging regions (“heterogeneities”) in OD phases near Tg.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria química::Química física
dc.subject.lcshGlass transition temperature
dc.subject.lcshOrganic compounds -- Mathematical models
dc.titleScaling the dynamics of orientationally disordered mixed crystals
dc.typeArticle
dc.subject.lemacCristalls mixtos -- Models matemàtics
dc.contributor.groupUniversitat Politècnica de Catalunya. GCM - Grup de Caracterització de Materials
dc.identifier.doi10.1063/1.3254207
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac1767098
dc.description.versionPostprint (published version)
local.citation.authorRomanini, M.; Martinez, J.; Tamarit, J.; Rzoska, S.J.; Del Barrio, M.; Pardo, L.; Drozd-Rzoska, A.
local.citation.publicationNameJournal of chemical physics
local.citation.volume131
local.citation.number18
local.citation.startingPage184504-1
local.citation.endingPage184504-6


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