Effect of elastic properties modification on the vibrational density of states: A joint Brillouin and Raman scattering study (Articolo in rivista)

Type
Label
  • Effect of elastic properties modification on the vibrational density of states: A joint Brillouin and Raman scattering study (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1002/app.34780 (literal)
Alternative label
  • S. Caponi (1,2); S. Corezzi (3,4); D. Fioretto (3); A. Fontana (1,5); F. Rossi (1,5) (2011)
    Effect of elastic properties modification on the vibrational density of states: A joint Brillouin and Raman scattering study
    in Journal of applied polymer science (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • S. Caponi (1,2); S. Corezzi (3,4); D. Fioretto (3); A. Fontana (1,5); F. Rossi (1,5) (literal)
Pagina inizio
  • 3672 (literal)
Pagina fine
  • 3676 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • Special Issue: Contributions from the 5th International Conference on Times of Polymers (TOP) and Composites, Ischia, Italy, June 20-23, 2010. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://onlinelibrary.wiley.com/doi/10.1002/app.34780/abstract (literal)
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  • 122 (literal)
Rivista
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  • 6 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Dipartimento di Fisica, Università di Trento, via Sommarive 14, I-38050 Povo (Trento), Italy (2) Istituto Officina dei Materiali-Consiglio Nazionale delle Ricerche (IOM-CNR) c/o Università di Perugia, via A. Pascoli, I-06100 Perugia, Italy (3) Dipartimento di Fisica, Università di Perugia, via A. Pascoli, I-06100 Perugia, Italy (4) Istituto Sistemi Complessi-Consiglio Nazionale delle Ricerche (ISC-CNR), via dei Taurini 19, I-00185 Roma, Italy (5) Istituto per i Processi Chimico Fisici, Consiglio Nazionale delle Ricerche, IPCF-CNR, Unit à Organizzativa di Supporto di Roma, Piazzale Aldo Moro 2, I-00185 Roma, Italy (literal)
Titolo
  • Effect of elastic properties modification on the vibrational density of states: A joint Brillouin and Raman scattering study (literal)
Abstract
  • The modification of the vibrational density of states in a reactive epoxy-amine mixture during isothermal polymerization at different temperatures was characterized by Brillouin and Raman scattering measurements. During the reaction, the system underwent the glass-transition passing from the liquid to the glassy phase. The relative variations of the boson peak (BP) and the elastic moduli were investigated. We found that the intensity variation and the shift of the BP could be completely explained in terms of the elastic medium transformation. A master curve of the spectra in the BP region can always be obtained both as a function of the reaction temperature and as a function of the reaction time. Moreover, the Brillouin light-scattering results gave evidence of the validity of a Cauchy-like relation for the real part of the elastic moduli measured at finite frequencies also in a relaxing regime (literal)
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