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Titolo:
The deformation mechanism of polyphenylquinoxaline films
Autore:
Liu, WJ; Shen, JS; Wang, Z; Lu, FC; Xu, M;
Indirizzi:
Chinese Acad Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China Chinese Acad Sci Beijing Peoples R China 100080 100080, Peoples R China Jilin Univ Technol, Dept Appl Chem, Changchun 130022, Peoples R China Jilin Univ Technol Changchun Peoples R China 130022 022, Peoples R China
Titolo Testata:
POLYMER
fascicolo: 17, volume: 42, anno: 2001,
pagine: 7461 - 7464
SICI:
0032-3861(200108)42:17<7461:TDMOPF>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHEMICAL-STRUCTURE; POLYMERS;
Keywords:
polyphenylquinoxaline; entanglement; deformation mechanism;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
7
Recensione:
Indirizzi per estratti:
Indirizzo: Liu, WJ Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China Chinese Acad Sci ChangchunPeoples R China 130022 eoples R China
Citazione:
W.J. Liu et al., "The deformation mechanism of polyphenylquinoxaline films", POLYMER, 42(17), 2001, pp. 7461-7464

Abstract

The deformation mechanism of polyphenylquinoxaline (PPQ-E) film has been studied by theoretical prediction and microscopic observation. The entanglement density, estimated from the plateau modulus on the dynamic mechanical property curves, was used to predict the deformation mechanism of PPQ-E. Polarized light microscope (PLM) was used to observe the morphology of the PPQ-E film during tensile deformation, it is found that the deformation mechanism of PPQ-E is both crazing and sheer yielding, which is in agreement withthe prediction by entanglement density. The craze morphology of PPQ-E is mainly of fibril craze consisting of micro-fibrils and micro-voids as observed by transmission electron microscope (TEM). The interface between the bulk and craze is distinct. Multiple crazes, blunting of craze tips and homogeneous deformation zones have also been observed. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/09/20 alle ore 12:07:18