Presentation Profile
A step-by-step analytical protocol for detecting and identifying minor differences in like materials and polymers Using Pyrolysis
Currently Scheduled: 10/11/2023 - 8:00 AM - 8:20 AM
Room: Wisteria
Main Author
Athena Nguyen - Frontier Labs Americas
- Rojin Belganeh - Frontier Lab Americas
Abstract:
The differences in the chemical composition of three polystyrene samples are revealed in this presentation providing a step-by-step analytical protocol for detecting and identifying minor differences in like materials and polymers. The technique used is, Pyrolysis-Gas chromatography/Mass spectroscopy, an easy solid sample introduction technique that expands the application areas of gas chromatography and mass spectrometry. The Multi-Mode Micro- furnace pyrolyzer is directly interfaced with the GC injector preventing any potential of cold spot, carryover, and cross-contamination. The multi-mode pyrolyzer with different modes of operations including Evolve gas analysis (EGA), Flash pyrolysis, Thermal desorption, and Heart- cutting can be operated in the same system. The method requires very little sample preparation. EGA is the first step that provides information about the thermal temperature behaviors of the sample. The following is the flash pyrolysis mode of operation in which the resulting pyrograms include volatiles, additives, and polymer information. By utilizing Thermal desorption (TD-GC/MS), the additives compounds between the three samples show differences.
