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Photodegradation of PEEK sheets under tensile stress

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Title: Photodegradation of PEEK sheets under tensile stress
Authors: Nakamura, Hiroshi Browse this author
Nakamura, Takashi2 Browse this author →KAKEN DB
Noguchi, Toru Browse this author →KAKEN DB
Imagawa, Kichiro Browse this author
Authors(alt): 中村, 孝2
Keywords: Photodegradation
Space environment
Applying stress
Fourier transform infrared
X-ray photoelectron spectroscopy
Differential scanning calorimeter
Mechanical properties
Issue Date: Apr-2006
Publisher: Elsevier
Journal Title: Polymer Degradation and Stability
Volume: 91
Issue: 4
Start Page: 740
End Page: 746
Publisher DOI: 10.1016/j.polymdegradstab.2005.06.003
Abstract: The photochemical reaction of poly(ether ether ketone) (PEEK) sheets under tensile loads has been investigated. Two types of UV irradiation tests were carried out in a vacuum environment: with and without a cooling apparatus. Chemical structures, thermal properties, and mechanical properties were measured to clarify photo-deterioration. Chemical analysis based on Fourier Transform Infrared Spectrometry (FT-IR) and X-ray Photoelectron Spectroscopy (XPS) showed photochemical scission caused by UV exposure. Thermal properties, measured by Differential Scanning Calorimetry (DSC), indicated that a crosslinking reaction occurred during the radiation tests. Tensile properties of PEEK sheets after UV radiation clearly showed a tendency to embrittlement affected not only by crosslinking but also by the orientation of molecular chains resulting from the temperature rise of the specimens. Furthermore, applied tensile stress during exposure accelerated molecular scission and disturbed the crosslinking effects of the tensile properties.
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 中村 孝

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