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Titolo:
ANALYSIS OF THE LOW-TEMPERATURE SPECIFIC-HEAT IN POLYETHYLENE
Autore:
CARINI G; DANGELO G; TRIPODO G; BARTOLOTTA A; DIMARCO G;
Indirizzi:
UNIV MESSINA,DIPARTIMENTO FIS,CONTRADA PAPARDO SALITA SPERONE 31 I-98166 MESSINA ITALY UNIV MESSINA,IST NAZL FIS MAT I-98166 MESSINA ITALY CNR,IST TECN SPETTROSCOP I-98166 MESSINA ITALY
Titolo Testata:
Philosophical magazine. B. Physics of condensed matter.Statistical mechanics, electronic, optical and magnetic
fascicolo: 2, volume: 77, anno: 1998,
pagine: 443 - 448
SICI:
1364-2812(1998)77:2<443:AOTLSI>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
FRAGILE GLASS FORMERS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
13
Recensione:
Indirizzi per estratti:
Citazione:
G. Carini et al., "ANALYSIS OF THE LOW-TEMPERATURE SPECIFIC-HEAT IN POLYETHYLENE", Philosophical magazine. B. Physics of condensed matter.Statistical mechanics, electronic, optical and magnetic, 77(2), 1998, pp. 443-448

Abstract

The low-temperature specific heats of polyethylene polymers with different degrees of crystallinity have been reproduced by considering a linear overlap of the contributions from both the crystalline and the amorphous phases characterizing the polymer. The excess specific heat over that provided from the Debye theory is assumed to be due to the amorphous phase and has been described by an empirical phonon-fracton density of vibrational states. A comparison between the 'fragility' of the amorphous fraction of the polymers and the excess specific heat hasbeen tried. Within the range of crystallinities explored, no correlation has been found between the fragility and the density of additionallow-energy vibrations.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 10:00:27