Pyrolyser : CDS - Probe 6150
Pyrolysis temperatures : 30 to 1000 ° C
Multi temperature Step : Yes, up to 10 programs
Vector gas : Helium.
Structural identification and quantification of polymeric matrices,
VOC thermodesorption at selected temperature (from 30°C to 1000°C).
The sample was placed in the insert of the pyrolyzer probe and heated from 30 to 1000 ° C (usually around 550 ° C). This instantly causes the fragmentation of certain macromolecules (polymers) and the simple volatilization of organic molecules (adjuvants, solvents, residual monomers, pollution, etc.) present in the sample.
All these pyrolytic fragments and all these volatilized molecules will be separated by the chromatographic column, then identified by the MS detector (mass spectrometry).
The recognition of “tracer” pyrolytic fragments and the comparison with those obtained with known matrices allows the certain identification of the polymeric matrix (s) of the sample.
Fast & simple: 1 analysis = Nature of the trapped volatiles (solvents, adjuvants, etc.) + Nature of the polymer matrix (s).
Suitable for all types of polymers (natural, synthetic ...) and heavy adjuvants (Irganox 1010 ...) or oligomeric (HALS ...),
Requires little sample (a few mg),
No sample preparation (we can inject inorganic matrices),
Quite sensitive (LOQ from 10 ppm to 100 ppm).
The small quantity of sample injected (a few mg) does not allow relevant repeatability on heterogeneous samples.
Pyrolysis/GCMS in action:
Expertise on a polyester shell swimming pool
Structural identification of a PP by Pyrolysis/GCMS
Structural identification on an unknown material
Purity control on synthetic fibers
Stoichiometry failure on two-component epoxy
Structural identification of a styrene-acrylic paint