Other on-line pyrolysis-analytical techniques

Several analytical techniques not associated with GC can be adapted for on-line analysis of pyrolysates. Techniques such as pyrolysis-HPLC (Py-HPLC) and pyrolysis-IR (Py-IR) were reported in literature [17]. In Py-HPLC, for example, the analytical 

A novel, relatively simple method for analytical pyrolysis of polymers is pyrolysis-fractography (Py-F) [18]. In this method, the pyrolysate generated when a polymer is instantaneously pyrolyzed at 600° C is introduced together with the carrier gas into a short length deactivated stainless steel capillary tube. This tube is placed in the oven of a gas chromatograph. The oven temperature is linearly raised, so that the pyrolysate is fractionated based on the distillation temperature, and a fractogram is obtained using a mass spectrometer or a flame ionization detector. 

Infrared (IR) techniques are reported in literature to be used in combination with different thermal experiments as a convenient tool of analysis. For example, IR-EGA (infrared evolved gas analysis) was used for obtaining information on different thermal and combustion processes [19]. A simple IR attachment where the sample can be pyrolyzed close to the IR beam is also commercially available (Pyroscan/IR from CDS Analytical). Although the IR detectors are by far not as popular as the MS, pyrolysis-gas chromatography/Fourier transform IR (Py-GC/FTIR) occasionally has been used in polymer analysis. Such applications have been commonly related to the analysis of certain gases such as CO2, CO, CH4, NH3, etc., where the MS analysis is less successful [20, 21]. 

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