EXPERT WITHIN THERMOANALYSIS AND ANALYTICAL CHEMISTRY

Fourier-Transform Infrared Spectrometry (FT-IR)

Infrared spectrometry exposes a sample or material to infrared radiation. Different functional groups and parts of molecules will absorb energy from certain wavelengths and begin to vibrate or move in different directions. How these movements arise and in what direction depend on how the different groups within a molecule are linked to each other. The result is, after Fourier-Transform conversion of the data to a spectrum. By studying this you can get a lot of information, among other things, about the structure and the functional groups found in the sample you are analyzing. You can do both qualitative and quantitative tests.

Below are some examples of what kind of information we can provide on TermoLab using FT-IR.

Identification

Infrared spectroscopy is used largely for the identification of polymer materials and components. For example, one can identify the base polymer, additives, plasticizers or other additives. If you have unknown samples, FT-IR is a good first step for identification.

Alteration in the molecular structure

Using infrared spectrometry, one can investigate whether a polymer structure begins to degrade. This means that FT-IR is a good tool along with other tests in failure investigations.

Continuous quality control

Together with other tests, the FT-IR can be excellent for continuous checking of materials for assessing quality and properties.

Comparing tests

In comparison tests of different materials, FT-IR is an excellent instrument. This may mean comparisons of materials from different manufacturers or comparisons of materials before and after some form of secondary impact such as sterilization or heat treatment.

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