THz-Spectroscopy on High Density Polyethylene with Different Crystallinity

  • Stefan Sommer
  • Thomas Raidt
  • Bernd M. Fischer
  • Frank Katzenberg
  • Jörg C. Tiller
  • Martin Koch


The different crystallinity states of high density polyethylene (PE-HD) are investigated using THz time-domain spectroscopy by exploiting the complex permittivity at a frequency range from 0.5 up to 3.5 THz. We found that samples with different crystallinity can be distinguished by comparing the material specific refractive index (n) or rather the linked complex part of the permittivity (∈ ′ ′). Correlating the calorimetrically determined degrees of crystallinity with the absolute values of the refractive index and the specific absorption peak at 2.18 THz, respectively, suggests in both cases a linear correlation.


THz-spectroscopy High density polyethylene Crystallinity of polymers 


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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Stefan Sommer
    • 1
  • Thomas Raidt
    • 2
  • Bernd M. Fischer
    • 1
    • 3
  • Frank Katzenberg
    • 2
  • Jörg C. Tiller
    • 2
  • Martin Koch
    • 1
  1. 1.Department of Physics and Materials Sciences CenterPhilipps-Universität MarburgMarburgGermany
  2. 2.Biomaterials & Polymer Science Department of Biochemical & Chemical EngineeringTU DortmundDortmundGermany
  3. 3.French-German Research Institute Saint-LouisSaint-LouisFrance

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