STRUCTURAL IDENTIFICATION

Sometimes questions arise as to the composition of a finished product or workpiece. For example, you have received a product supposed to be made of PE coated with PU and have a doubt about the nature of the materials, or your distributor has supplied you with PA12 and you want to be sure?
The structural identification allows the listing and the estimation of the ratios of the polymeric matrices present in the product in order to obtain the composition of the latter. 
Piscine et revêtements

You meet needs:

You notice a change in color or strength between an old and a new part and want to understand the origin. Are you suspicious about the composition of a product purchased from a new supplier and want to check the composition of your packaging before an agri-food migration or extractables test?

Call on the Polymex laboratory!

POLYMEX SUPPORTS YOU 

In order to obtain the composition of your unknown products and materials, our team will rely on the analytical method of pyrolysis coupled with gas chromatography (GC) with detection by mass spectrometry (MS) and FTIR.

The Pyrolysis/GCMS technique makes it possible to work on macromolecules thanks to a molecular degradation of the material by adding heat. This degradation leads to the breaking of the polymer chains and the desorption of the volatile molecules present. The study of the tracer fragments then makes it possible to go back to the structure of the polymer matrix
In addition, the IRTF spectrometer will allow us a structural identification of polymeric matrices.

Piscine et revêtements

Polymex accompanies you on any type of request:

  • Material matrix confirmation (PP type) --> IRTF for spectral confirmation
  • Confirmation of the absence of plastic compounds (PP, PE), in a cellulose-based material --> Pyrolysis GCMS with targeting
  • Check the presence of several materials present --> Structural identification by Py/GCMS with determination of constituent ratios


Other examples from industry

During injection into the GC, all organic compounds will be separated by the chromatographic column and then identified by the MS (mass..
GCMS-FID

GCMS-FID

The sample is directly injected into the pyrolyzer oven heated to 550 ° C using a solid syringe. This instantly causes the fragmentation of..
PYROLYZER

PYROLYZER

During the injection into the LC, all the semi-volatile organic molecules will be separated by the chromatographic column and then detected..
UPLC/UV/TOF-MS

UPLC/UV/TOF-MS

During the injection into the LC module, all the semi-volatile organic molecules will be separated by the chromatographic column and then..
UPLC-MS-MS

UPLC-MS-MS

The HeadSpace / GCMS technique does not require preparation. The sample is placed in a gas tight vial and hermetically sealed using a..
HEADSPACE/GCMS

HEADSPACE/GCMS

This spectral analysis makes it possible to know the nature of the covalent bonds present in the sample. Each of them (for example..
IRTF SPECTROMETER

IRTF SPECTROMETER

A SEM (Scanning Electron Microscope) uses an electron beam to obtain enlarged images of very good resolution. It can also be used to..
SEM/EDX

SEM/EDX

CENTRIFUGE

CENTRIFUGE

Certain molecules form by reaction colorimetric complexes having maximum absorption in UV-Visible. The color of these complexes is read..
UV-VIS SPECTROMETER

UV-VIS SPECTROMETER