Full Content is available to subscribers

Subscribe/Learn More  >
Proceedings Article

High-speed identification of polymers by laser-induced breakdown spectroscopy

[+] Author Affiliations
Ingo Moench, R. Sattmann, Reinhard Noll

Fraunhofer-Institut fuer Lasertechnik (Germany)

Proc. SPIE 3100, Sensors, Sensor Systems, and Sensor Data Processing, 64 (September 25, 1997); doi:10.1117/12.281265
Text Size: A A A
From Conference Volume 3100

  • Sensors, Sensor Systems, and Sensor Data Processing
  • Otmar Loffeld
  • Munich, Germany | June 16, 1997

abstract

One way to reduce the increasing waste streams of used polymers is an efficient material recycling. This requires a technology for the separation of polymer mixtures into different material fractions. For this purpose the principal suitability of laser-induced breakdown spectroscopy was investigated. Plasma emission spectra of LDPE, HDPE, PP, PET, PVC, and PS were studied. Basic investigations were performed in order to assess the influence of different measurement parameters and to optimize the analytical performance. More than 140 spectra lines are identified, which can be related to C, H, O, N, C2, CN and CH from the bulk material and the atmosphere and to Al, Ca, Cu, Fe, Mg, Sn, Ti and Zn from additives of the polymer. Estimated detection limits of down to 2 ppm are achieved for metallic additives. Different artificial neural networks were tested for the evaluation of the spectra. PET and PVC can be identified unambiguously detecting the characteristic elements oxygen and chlorine. For plastics, which differ in their contents of inorganic additives, the line emission of additives can be used as `fingerprints' of the plastics. In this way identification accuracies of 87% to 100% for PE, PP, PET and PVC are achieved.

© (1997) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Ingo Moench ; R. Sattmann and Reinhard Noll
"High-speed identification of polymers by laser-induced breakdown spectroscopy", Proc. SPIE 3100, Sensors, Sensor Systems, and Sensor Data Processing, 64 (September 25, 1997); doi:10.1117/12.281265; http://dx.doi.org/10.1117/12.281265


Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).

Figures

Tables

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.