The effect of solvent uptake on the relaxation behaviour, morphology and mechanical properties of a poly(ether ether ketone)/poly(etherimide) blend

Browne, M. M., Forsyth, M. and Goodwin, A. A. 1997, The effect of solvent uptake on the relaxation behaviour, morphology and mechanical properties of a poly(ether ether ketone)/poly(etherimide) blend, Polymer, vol. 38, no. 6, pp. 1285-1290.

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Title The effect of solvent uptake on the relaxation behaviour, morphology and mechanical properties of a poly(ether ether ketone)/poly(etherimide) blend
Author(s) Browne, M. M.
Forsyth, M.
Goodwin, A. A.
Journal name Polymer
Volume number 38
Issue number 6
Start page 1285
End page 1290
Publisher Elsevier Ltd.
Place of publication Oxford, England
Publication date 1997-03
ISSN 0032-3861
1873-2291
Keyword(s) poly(ether ether ketone)
poly(etherimide)
solvent uptake
Summary The effects of solvent uptake on the relaxation behaviour, morphology and 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°C, 35°C and 45°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 is strongly 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.
Language eng
Field of Research 039999 Chemical Sciences not elsewhere classified
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©1997, Elsevier Science Ltd.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30030079

Document type: Journal Article
Collection: Institute for Technology Research and Innovation
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