DSC characterisation of compression moulded PEEK-PTFE plaques
- Publication Type:
- Journal Article
- Citation:
- Journal of Thermal Analysis and Calorimetry, 2003, 72 (2), pp. 675 - 679
- Issue Date:
- 2003-07-03
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2003000368.pdf | 269.29 kB |
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Compression moulded plaques of a range of poly(ether ether ketone) (PEEK)- poly(tetrafluoroethylene) (PTFE) blends (100, 92, 48, 29, 9.5 and 0 mass% PEEK) have been characterised using differential scanning calorimetry (DSC) and wide angle X-ray crystallography (WAXD). A shift in the melting peak of the PEEK phase from 347 to 358°C was observed with increasing proportion of PTFE in the blend. A narrowing of the melting range was also observed. Correspondingly, WAXD measurements showed a reduction in the d-spacings. The observed changes in morphology are rationalised in terms of a higher degree of order imparted on the PEEK crystalline phase by the transmission of an applied 'hydrostatic' pressure by the presence of the PTFE.
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