http://www.cnr.it/ontology/cnr/individuo/prodotto/ID1793
Relaxation dynamics in tert-butylpyridine/tristyrene mixture investigated by broadband dielectric spectroscopy (Articolo in rivista)
- Type
- Label
- Relaxation dynamics in tert-butylpyridine/tristyrene mixture investigated by broadband dielectric spectroscopy (Articolo in rivista) (literal)
- Anno
- 2007-01-01T00:00:00+01:00 (literal)
- Alternative label
Kessairi, K; Capaccioli, S; Prevosto, D; Lucchesi, M; Rolla, P (2007)
Relaxation dynamics in tert-butylpyridine/tristyrene mixture investigated by broadband dielectric spectroscopy
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Kessairi, K; Capaccioli, S; Prevosto, D; Lucchesi, M; Rolla, P (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Univ Pisa, INFM, CNR, PolyLab, I-56127 Pisa, Italy; Univ Pisa, Dipartmento Fis, I-56127 Pisa, Italy; Univ Pisa, INFM, CNR, CRS SOFT Roma, I-56127 Pisa, Italy (literal)
- Titolo
- Relaxation dynamics in tert-butylpyridine/tristyrene mixture investigated by broadband dielectric spectroscopy (literal)
- Abstract
- We investigated, by means of dielectric spectroscopy, the relaxation dynamics of glass forming binary mixtures composed by the quite rigid polar molecules tert-butylpyridine dissolved in the apolar solvent tristyrene. By changing the relative concentration of the components we observed a transition from a relaxation scenario with a structural process and an excess wing to that with a structural process and a well resolved secondary process. Another relaxation process, slower than the latter, was observed, well below T-g. Our detailed analysis evidenced that the secondary relaxation with shorter relaxation time can be identified as the Johari-Goldstein relaxation for all the mixtures, whereas the new relaxation process was attributed to a different type of motion of tert-butylpyridine needing a larger amount of free volume for the molecular rotation. (c) 2007 American Institute of Physics. (literal)
- Prodotto di
- Autore CNR
- Insieme di parole chiave
Incoming links:
- Autore CNR di
- Prodotto
- Insieme di parole chiave di