Analytical pyrolysis of copolymers

In the first part of the paper, a survey is given of the present state of characterization and analysis of copolymers by pyrolysis with subsequent separation and analysis of the pyrolysate. Special attention is given to the mechanisms of thermal degradation of polymers and copolymers. Among the anal...

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Bibliographic Details
Published in:Spectrochimica acta. Part A: Molecular spectroscopy 1985, Vol.41 (1), p.279-290
Main Authors: Hummel, D.O., Düssel, H.-J., Czybulka, Gina, Wenzel, N., Holl, G.
Format: Article
Language:English
Subjects:
Applied sciences
Chemical reactions and properties
Degradation
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
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Summary:In the first part of the paper, a survey is given of the present state of characterization and analysis of copolymers by pyrolysis with subsequent separation and analysis of the pyrolysate. Special attention is given to the mechanisms of thermal degradation of polymers and copolymers. Among the analytical methods, pyrolysis-mass spectrometry with field-ionization (Py-FIMS) as well as pyrolysis-gas chromatography (Py-GC) coupled with mass or FTIR spectrometry are most powerful. In the second part of the paper, our own results on the analysis of elastomers on the basis of random and block-type copolymers as well as polymer blends by Py-FIMS are reported. By the use of intensity ratios of monomer peaks together with the intensities of homo- and hybrid dimer and trimer fragments, different types of elastomers can be identified. Acrylic resins were investigated by Py-GC/dispersive i.r. and by Py-GC/FTIR. As expected, the latter method is much more sensitive. Compared with Py-FIMS, Py-GC/FTIR has the advantage of giving direct evidence of the chemical nature of the fragments. This is crucial when nothing is known of a system under consideration.
ISSN:0584-8539
DOI:10.1016/0584-8539(85)80106-9