Furthermore FT-IR spectroscopy is very established for the quality control of industrially manufactured polymers and the used raw materials. A change in the characteristic pattern of absorption bands clearly indicates the change in the composition of the material or its contamination. If a bad spot in a plastic product was found by visible inspection, its origin is typically determined by FT-IR microanalysis as this technique is capable to analyze the chemical composition of even very small areas on the surface. Furthermore FT-IR and Raman microanalysis are used to reveal the chemical structure of multi-layered laminates.
Near infrared spectroscopy is used for the quantification of quality relevant parameters in polymers like OH-number, acid or amine value to name a few. As innovative analytical methods are of great economic interest, NIR is becoming more and more established for the monitoring of polymer production processes. Many companies start to replace conventional at-line analysis methods by spectroscopic online tools like the MATRIX-F FT-NIR spectrometer.
An increased speed of analytical processes and decreased maintenance costs offer a high savings potential. The great amount of information delivered by the NIR spectra allow a simultaneous high-precision analysis of many different components and system parameters such as density, viscosity, degree of cross-linking, stabilizer as well as monomer content and many others.
Electron microscope analyzers such as EDS for SEM and TEM, WDS and Micro-XRF allow the analysis of element distributions down to ppm with high spatial resolution and in highly topographic samples, such as porous materials or polymers with inclusions.