Fourier Transform Infrared Spectroscopy

Stress Engineering Services uses Fourier Transform Infrared Spectroscopy (FTIR) to identify organic compounds, polymeric materials and additives. FTIR testing is a common technique used to identify unknown polymers and organic compounds.

FTIR is a classic reverse engineering technique that can be used to determine a polymer class (thermosetting vs. thermoplastic) and family (i.e. Nylon, Polyethylene, Polypropylene). By focusing on subtleties in the spectra produced for polymers, further identification and delineation is possible (i.e. Homopolymer Polypropylene can be differentiated from Copolymer Polypropylene).

FTIR is generally a surface technique (i.e. infrared penetration of 2-5 μm). However, it is capable of determining whether a material has been contaminated and in some cases, degraded. The fingerprint for each material is unique and distinct. In certain cases, FTIR must be coupled with other techniques (such as Differential Scanning Calorimetry, Raman Spectroscopy, or SEM).

Our staff conducts analysis using both standardized and customized methodology. A list containing common test methods is shown below. Employing a database with 1000s of library spectra, we are capable of identifying most unknown materials.

Standard Tests:

ASTM E168: Quantitative FTIR Analysis

ASTM E1252: Qualitative FTIR Analysis

Instrument Capabilities:

  • Micro-FTIR: Available
  • Diamond Plate: Available
  • Germanium Plate: Available
  • Liquid Samples: Yes
  • Solid Samples: Yes
  • Library Spectra: >13,000

Contact Us

If you would like more information on Stress Engineering Services, please call us at 281.955.2900, or complete the following form and one of our representatives contact you shortly. For a complete listing of contact information, visit our Locations page.

"*" indicates required fields

This field is for validation purposes and should be left unchanged.