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Titolo:
Effects of crystallinity and stress state on the yield strain of polyethylene
Autore:
Brooks, NWJ; Duckett, RA; Ward, IM;
Indirizzi:
Univ Leeds, IRC Polymer Sci & Technol, Leeds LS2 9JT, W Yorkshire, EnglandUniv Leeds Leeds W Yorkshire England LS2 9JT S2 9JT, W Yorkshire, England
Titolo Testata:
POLYMER
fascicolo: 26, volume: 40, anno: 1999,
pagine: 7367 - 7372
SICI:
0032-3861(199912)40:26<7367:EOCASS>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
RATE DEPENDENCE; TEMPERATURE; POINTS;
Keywords:
polyethylene; dynamic mechanical thermal analysis (DMTA); stress-strain;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
11
Recensione:
Indirizzi per estratti:
Indirizzo: Brooks, NWJ Univ Leeds, IRC Polymer Sci & Technol, Leeds LS2 9JT, W Yorkshire, England Univ Leeds Leeds W Yorkshire England LS2 9JT rkshire, England
Citazione:
N.W.J. Brooks et al., "Effects of crystallinity and stress state on the yield strain of polyethylene", POLYMER, 40(26), 1999, pp. 7367-7372

Abstract

The yield strain has been measured over a wide range of temperatures for four polyethylene grades which differ with respect to both their short chainbranch content and their molecular weight. The results have shown that allthe materials exhibit a transition in their mechanical behaviour at sub-ambient temperatures. The transition temperature is shown to increase as the crystallinity is increased. It is proposed that this transition temperatureis related to an interlamellar sheer process. The yield strain measured over a range of temperatures generally increases as the crystallinity is reduced. (C) 1999 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 11/08/20 alle ore 14:36:11