Study of local and cooperative molecular movements in Polyethyleneoxide-Potassium thiocyanate complexes by mechanical measurements (Articolo in rivista)

Type

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

Label

• Study of local and cooperative molecular movements in Polyethyleneoxide-Potassium thiocyanate complexes by mechanical measurements (Articolo in rivista) (literal)

Anno

• 1991-01-01T00:00:00+01:00 (literal)

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

• 10.1007/BFb0115967 (literal)

Alternative label

• A. Bartolotta, G. Di Marco, G. Tripodo and G. Carini (1991)
  Study of local and cooperative molecular movements in Polyethyleneoxide-Potassium thiocyanate complexes by mechanical measurements
  in Progress in colloid & polymer science
  (literal)

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

• A. Bartolotta, G. Di Marco, G. Tripodo and G. Carini (literal)

Pagina inizio

• 215 (literal)

Pagina fine

• 218 (literal)

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

• 84 (literal)

Rivista

• Progress in colloid & polymer science (Rivista)

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

• IPCF-CNR UNIME (literal)

Titolo

• Study of local and cooperative molecular movements in Polyethyleneoxide-Potassium thiocyanate complexes by mechanical measurements (literal)

Abstract

• The mechanical characteristics (internal friction and dynamic elastic modulus) of polyethylene oxide (PEO)-KSCN complexes are studied as a function of temperature (120-300 K) and frequency. The mechanical spectrum is characterized by the presence of the ?-relaxation at low temperatures and of the aa-relaxation at high temperatures, respectively arising from local and cooperative molecular motions. The salt addition modifies the ?-relaxation region, which consists of a single loss peak in pure PEO, and gives rise to two close low temperature relaxations. The behavior of the relaxation strengths with the salt content permits to assign them to local motions within the amorphous regions of the polymer. -- The aa-relaxation shifts to higher temperatures by increasing the KSCN content. Moreover, an enhancement of the amorphous phase of the polymer has been revealed in the low concentration region. (literal)

Prodotto di

• Dispositivi fotoelettrochimici, polimeri e termodinamica dei processi irreversibili (MD.P01.014.005) (Modulo)
• Istituto per i processi chimico-fisici (IPCF) (Istituto)

Autore CNR

• GAETANO DI MARCO (Persona)
• ANTONINO BARTOLOTTA (Unità di personale interno)

Incoming links:

Prodotto

• Istituto per i processi chimico-fisici (IPCF) (Istituto)
• Dispositivi fotoelettrochimici, polimeri e termodinamica dei processi irreversibili (MD.P01.014.005) (Modulo)

Autore CNR di

• ANTONINO BARTOLOTTA (Unità di personale interno)
• GAETANO DI MARCO (Persona)

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

• Progress in colloid & polymer science (Rivista)