Terahertz absorption spectroscopy of poly(ether ether ketone)

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

The crystallinity of sheets of poly(ether ether ketone) (PEEK) was changed by thermal treatments conducted at 295 oC for various periods and their terahertz (THz) and Fouriertransform infrared absorption (FT-IR) spectra were obtained. As a result, it has been confirmed that an absorption peak appears at around 3.5 THz in the sheet samples that exhibit clear X-ray diffraction patterns at 20= 18.8, 20.8, 22.8, and 28.8o. In contrast, no obvious sample-dependent changes were observed in FT-IR spectra. The absorption at around 3.5 THz shows a shift in frequency to a degree proportional to the crystallinity. Its maximum intensity is also in proportion to the crystallinity. These results indicate that the absorption at 3.62 THz has a close relation with the crystallinity of PEEK This in turn means that the THz absorption spectroscopy can be used for estimating the crystallinity of PEEK.

Original languageEnglish
Title of host publicationProceedings of 2017 International Symposium on Electrical Insulating Materials, ISEIM 2017
PublisherInstitute of Electrical Engineers of Japan
Pages539-542
Number of pages4
Volume2
ISBN (Electronic)9784886860996
DOIs
Publication statusPublished - 2017 Dec 4
Event2017 International Symposium on Electrical Insulating Materials, ISEIM 2017 - Toyohashi, Japan
Duration: 2017 Sep 112017 Sep 15

Other

Other2017 International Symposium on Electrical Insulating Materials, ISEIM 2017
CountryJapan
CityToyohashi
Period17/9/1117/9/15

Keywords

  • Crystalline polymer
  • Crystallinity
  • Infrared absorption spectroscopy
  • Non-destructive diagnosis
  • Terahertz time-domain spectroscopy
  • X-ray diffraction

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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