Fragility and glass transition temperature in the rheological response of azobenzene copolymers (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Fragility and glass transition temperature in the rheological response of azobenzene copolymers (Articolo in rivista) (literal)

Anno

• 2006-01-01T00:00:00+01:00 (literal)

Alternative label

• Andreozzi, L; Faetti, M; Giordano, M; Zulli, F (2006)
  Fragility and glass transition temperature in the rheological response of azobenzene copolymers
  
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Andreozzi, L; Faetti, M; Giordano, M; Zulli, F (literal)

Pagina inizio

• 373 (literal)

Pagina fine

• 382 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 450 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Univ Pisa, Dipartimento Fis E Fermi, I-56127 Pisa, Italy; Univ Pisa, PolyLab INFM, I-56127 Pisa, Italy; Univ Pisa, Dipartimento Chim & Chim Ind, I-56127 Pisa, Italy; Univ Pisa, INSTM, I-56127 Pisa, Italy (literal)

Titolo

• Fragility and glass transition temperature in the rheological response of azobenzene copolymers (literal)

Abstract

• Two copolymers containing nonmesogenic methyl methacrylate (MMA) and nematogenic azobenzene methacrylate (MA4) side groups (30/70 and 40/60 copolymers) azobenzene were studied in the linear viscoelastic regime. The time-temperature superposition principle was found to hold over the whole investigated temperature range, even across the nematic-isotropic transition in the 30/70 copolymer. Rheological steady state and oscillatory measurements were used to obtain the temperature dependence of the zero shear viscosity. The strength and dynamic fragility of these two copolymers were compared with those of the corresponding PMA4 and PMMA homopolymers, which pointed out the role of the structure of the main chain in dictating the relaxational dynamics. (literal)

Prodotto di

• Film di materiali polimerici: effett di confinamento superficiale ed applicazioni (MD.P01.017.001) (Modulo)

Autore CNR

• LAURA ANDREOZZI (Unità di personale esterno)

Insieme di parole chiave

• Parole chiave di "Fragility and glass transition temperature in the rheological response of azobenzene copolymers" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• LAURA ANDREOZZI (Unità di personale esterno)

Prodotto

• Film di materiali polimerici: effett di confinamento superficiale ed applicazioni (MD.P01.017.001) (Modulo)

Insieme di parole chiave di

• Parole chiave di "Fragility and glass transition temperature in the rheological response of azobenzene copolymers" (Insieme di parole chiave)