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Introduction to pyrolysis-capillary gas chromatography.
1CDS Analytical, Inc., Oxford, PA 19363-0277, USA.
Journal of Chromatography. A
|June 23, 1999
Summary
Analytical pyrolysis breaks down large molecules into smaller fragments for analysis using gas chromatography. This technique aids in identifying polymers, understanding their structure, and ensuring quality control.
Area of Science:
- Analytical Chemistry
- Polymer Science
Background:
- Analytical pyrolysis is a technique used to analyze polymeric materials.
- It involves breaking down large molecules into characteristic smaller fragments.
Purpose of the Study:
- To extend the use of gas chromatography (GC) for analyzing polymers.
- To interpret molecular fragments for polymer microstructure analysis.
- To facilitate routine identification and quality control of synthetic and natural polymers.
Main Methods:
- Utilizing analytical pyrolysis to generate molecular fragments from polymers.
- Employing gas chromatography (GC) to separate and analyze these fragments.
- Interfacing pyrolysis devices (microfurnace, Curie-point, filament) efficiently with GC systems.
Main Results:
- Characteristic fragmentation patterns were observed for various polymers.
- The technique allowed for the identification of polymer and copolymer microstructure.
- Successful routine identification and quality control were demonstrated.
Conclusions:
- Analytical pyrolysis, coupled with GC, is a powerful tool for polymer analysis.
- Understanding the fragmentation chemistry is key to interpreting results.
- Efficient interfacing of pyrolysis devices with GC is crucial for maximizing analytical resolution.