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Titolo:
THE EFFECT OF SOLVENT UPTAKE ON THE RELAXATION BEHAVIOR, MORPHOLOGY AND MECHANICAL-PROPERTIES OF A POLY(ETHER ETHER KETONE) POLY(ETHERIMIDE) BLEND
Autore:
BROWNE MM; FORSYTH M; GOODWIN AA;
Indirizzi:
MONASH UNIV,DEPT MAT ENGN CLAYTON VIC 3168 AUSTRALIA MONASH UNIV,DEPT MAT ENGN CLAYTON VIC 3168 AUSTRALIA
Titolo Testata:
Polymer
fascicolo: 6, volume: 38, anno: 1997,
pagine: 1285 - 1290
SICI:
0032-3861(1997)38:6<1285:TEOSUO>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
SEMICRYSTALLINE MORPHOLOGY; CRYSTALLIZATION BEHAVIOR; GLASS-TRANSITION; IMIDE) BLENDS; POLY(ARYL-ETHER-ETHER-KETONE); PEEK; COMPOSITES; ABSORPTION;
Keywords:
POLY(ETHER ETHER KETONE); POLY(ETHERIMIDE); SOLVENT UPTAKE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
19
Recensione:
Indirizzi per estratti:
Citazione:
M.M. Browne et al., "THE EFFECT OF SOLVENT UPTAKE ON THE RELAXATION BEHAVIOR, MORPHOLOGY AND MECHANICAL-PROPERTIES OF A POLY(ETHER ETHER KETONE) POLY(ETHERIMIDE) BLEND", Polymer, 38(6), 1997, pp. 1285-1290

Abstract

The effects of solvent uptake on the relaxation behaviour, morphologyand mechanical properties of poly(ether ether ketone) (PEEK), poly(etherimide) (PEI) and a 50/50 PEEK/PEI blend have been investigated. Amorphous films were immersed in acetone at 25 degrees C, 35 degrees C and 45 degrees C until equilibrium uptake was achieved. The films were then examined by wide angle X-ray scattering (WAXS), differential scanning calorimetry (d.s.c.), dynamic mechanical relaxation spectroscopy and mechanical testing. WAXS and d.s.c. revealed that the degree of solvent induced crystallinity in PEEK is constant with immersion temperature, whereas the degree of induced crystallinity in the 50/50 blend isstrongly temperature dependent. The dynamic mechanical studies confirmed that a significant decrease in glass transition temperature results from the plasticizing effect of the solvent and that solvent and thermally crystallized samples have different relaxation characteristics. Mechanical property tests showed that the yield stress and tensile strength of the blend are dominated by PEEK and the degree of crystallinity, while the modulus is more sensitive to the extent of plasticization. (C) 1997 Elsevier Science Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 15:37:42