Elastic behaviour and low-temperature specific heat of linear and reticulated amorphous polymers (Articolo in rivista)

Type
Label
  • Elastic behaviour and low-temperature specific heat of linear and reticulated amorphous polymers (Articolo in rivista) (literal)
Anno
  • 1999-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1080/014186399256033 (literal)
Alternative label
  • G d'Angelo, G Tripodo, G Carini, A Bartolotta, G Salvato, VP Privalko (1999)
    Elastic behaviour and low-temperature specific heat of linear and reticulated amorphous polymers
    in Philosophical magazine. B. Physics of condensed matter. Electronic, optical and magnetic properties; TAYLOR & FRANCIS LTD, London (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • G d'Angelo, G Tripodo, G Carini, A Bartolotta, G Salvato, VP Privalko (literal)
Pagina inizio
  • 1889 (literal)
Pagina fine
  • 1895 (literal)
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  • 79 (literal)
Rivista
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  • 7 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 11-12 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • ] Univ Messina, Dipartimento Fis, I-98166 Messina, Italy Univ Messina, Ist Nazl Fis Mat, I-98166 Messina, Italy CNR, Istituto Tecniche Spettroscopiche, I-98166 Messina, Italy Natl Acad Sci Ukraine, Inst Macromol Chem, UA-253160 Kyiv, Ukraine (literal)
Titolo
  • Elastic behaviour and low-temperature specific heat of linear and reticulated amorphous polymers (literal)
Abstract
  • The mechanical characteristics in the region of the primary relaxation and the low-temperature specific heats have been measured in linear (bisphenol-A-polycarbonate and polyurethane) and reticulated (a fully cross-linked heterocyclic network) amorphous polymers. The behaviours revealed have been analysed in order to throw light on their correlation to the polymer morphology. It is found that a cross-linked polymer shows values of fragility, anharmonicity and low-temperature specific heat which are significantly smaller than those of linear polymers, characterized by weak interchain interactions. It is also shown that the fragility appears to scale with the anharmonicity of the system, the less fragile polymer being characterized by the smallest degree of anharmonicity. (literal)
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