Polymer Standards for Testing Fourier Transform Infrared Spectrometers.

Abstract

The use of commercially available stress relieved and extruded isotactic poly-propylene (iPP) samples was evaluated as a potential photometric standard for Fourier transform infrared (FT-IR) spectrometers. The parameters of polymer film dichroism, temperature sensitivity, sample thickness, and sample positioning were investigated as a function of spectral band position, width, and absorbance. The spectral band at 841 wavenumbers for iPP exhibited a Lorentzian band shape at spectral resolutions of 4 reciprocal centimeters or higher. This band allowed an experimental determination of spectrometer resolution at 4 reciprocal wavenumbers or lower with the iPP samples. The iPP samples also permitted evaluation of the spectrometer responsivity (i.e., band height and position) once the iPP film spectra were assessed as a function of polymer sample temperature.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1997
Accession Number
ADA330563

Entities

People

  • Bryan T. Bowie
  • Gregory T. Merklin
  • Peter R. Griffiths

Organizations

  • University of Idaho

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Algorithms
  • Curve Fitting
  • Dichroism
  • Films
  • Infrared Spectrometers
  • Infrared Spectroscopy
  • Materials
  • New York
  • Polymeric Films
  • Polymers
  • Spectra
  • Spectrometers
  • Spectrometry
  • Spectroscopy
  • Standards
  • Thickness

Readers

  • Analytical Chemistry
  • Approximation Theory.
  • Polymer Science and Technology