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Thermal, mechanical and dielectric behaviour of poly(aryl ether ketone) with low melting temperature

Audoit, Jérémie and Rivière, Lisa and Dandurand, Jany and Lonjon, Antoine and Dantras, Eric and Lacabanne, Colette Thermal, mechanical and dielectric behaviour of poly(aryl ether ketone) with low melting temperature. (2019) Journal of Thermal Analysis and Calorimetry, 135 (4). 2147-2157. ISSN 1388-6150

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Official URL: https://doi.org/10.1007/s10973-018-7292-x


New poly(aryl ether ketone)s (PAEKs) with a low melting temperature (relative to PEEK) are of interest in order to simplify the manufacturing of high-performance polymers or composites. In this study, we propose to investigate the physical properties of a new PAEK from Victrex, namely PAEK LM. Combinations of thermal analyses were used as follows: standard and modulated temperature differential scanning calorimetry, dynamic mechanical analysis, dynamic dielectric analysis and guarded hot plate technique. We found that the global mechanical, dielectric and thermal properties are very similar to the PEEK reference. The glass transition temperature was observed in the same range than PEEK (∼ 150 °C) while the melting temperature Tm was measured at 307 °C for PAEK LM which is about 35 °C below the melting temperature of PEEK. The degree of crystallinity of PAEK LM was found to be 27% while for PEEK it is 38%, depending on the processing conditions. This work explored crystalline structure–property relationships to explain the behaviour of PAEK LM.

Item Type:Article
HAL Id:hal-02067744
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
Deposited On:14 Mar 2019 11:28

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