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Influence of electronic irradiations on the chemical and structural properties of PEEK for space applications

Rival, Guilhem and Paulmier, Thierry and Dantras, Eric Influence of electronic irradiations on the chemical and structural properties of PEEK for space applications. (2019) Polymer Degradation and Stability, 168. 1-8. ISSN 0141-3910

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Official URL: https://doi.org/10.1016/j.polymdegradstab.2019.108943

Abstract

Polymer materials used in satellite manufacturing are exposed to severe environmental conditions. Irradiation by high-energy electrons induces chemical modifications of macromolecules. PolyEtherEtherKetone (PEEK) is used in space industry and therefore, its behaviour regarding electronic irradiations has to be studied. Thus, the aim of this work is to investigate the effect of experimental electronic irradiations on the physical and chemical structure of PEEK. In this way, PEEK films were irradiated under high vacuum by a mono-energetic electron beam. Doses deposited are representatives of 15 years in geostationary electronic environment. The study of irradiated samples revealed modifications of the chemical and physical structures. Irradiation predominantly induces cross-linking phenomena in the amorphous phase in front of chain scission phenomena. Irradiation also leads to a decrease in crystallite size and crystallinity ratio.

Item Type:Article
HAL Id:hal-02307101
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 - INPT (FRANCE)
French research institutions > Office National d'Etudes et Recherches Aérospatiales - ONERA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Laboratory name:
Funders:
Région Occitanie
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Deposited By: cirimat webmestre
Deposited On:07 Oct 2019 10:07

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