Elastic incoherent neutron scattering studies on glass forming hidrogen bonded systems (Articolo in rivista)

Type
Label
  • Elastic incoherent neutron scattering studies on glass forming hidrogen bonded systems (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Alternative label
  • F. Migliardo, S. Magazu, C. Mondelli (2004)
    Elastic incoherent neutron scattering studies on glass forming hidrogen bonded systems
    in Journal of molecular liquids (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • F. Migliardo, S. Magazu, C. Mondelli (literal)
Pagina inizio
  • 7 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 110 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Dipartimento di Fisica and INFM, Universit√† di Messina, P.O. Box 55, S.ta Sperone C.da Papardo, S. Agata, Messina 98166, Italy b INFM-Operative Group Grenoble CRG IN13 and Institut Laue-Langevin, Grenoble Cedex 9 38042, France (literal)
Titolo
  • Elastic incoherent neutron scattering studies on glass forming hidrogen bonded systems (literal)
Abstract
  • Neutron incoherent elastic scattering data have been collected on homologues disaccharides (trehalose, maltose, sucrose)/H2O mixtures as a function of temperature. The results show a dynamical transition at T~238 K, T~235 K and T~233 K for trehalose, maltose and sucrose/H2O mixtures, respectively, marking a cross-over in molecular fluctuations between harmonic and non-harmonic dynamical regimes, proving a higher 'rigidity' of trehalose mixture with respect to maltose and sucrose mixtures. This finding accounts for the higher cryptobiotic effectiveness of trehalose, namely a capability to encapsulate biostructures in a more rigid environment. (literal)
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