Article thumbnail

Monitoring polymeric compounding processes inline with THz time-domain spectroscopy

By N. Krumbholz, T. Hochrein, N. Vieweg, T. Hasek, K. Kretschmer, M. Bastian, M. Mikulics and M. Koch


We demonstrated the potential of terahertz spectroscopy for contactless and nondestructive inline control of polymeric compounding processes. Using a fiber-coupled terahertz spectrometer, we investigated molten polymers and polymeric compounds. On one hand, we studied the influence of temperature and pressure on the terahertz properties of molten polypropylene. On the other hand, various polypropylene-CaCO3 and PA6-glass-fiber compounds were examined. We showed that the volumetric additive content can be determined from the terahertz refractive index of the compound. Real-time measurements demonstrated the applicability of terahertz technology as a valuable tool for the inline control of production processes. (C) 2008 Elsevier Ltd. All rights reserved

Topics: info:eu-repo/classification/ddc/540, J, Non-destructive testing, Terahertz, Inline, Compounds, Additive content
Publisher: Elsevier Science
Year: 2009
DOI identifier: 10.1016/j.polymertesting.2008.09.009
OAI identifier:
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • (external link)
  • (external link)
  • Suggested articles

    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.