Citation

Zhu XS. J. Fire Sci. 1996; 14(6): 443-465.

Copyright

(Copyright © 1996, SAGE Publishing)

DOI

unavailable

PMID

unavailable

Abstract

The effect of ammonium polyphosphate (APP) on thermal and thermo-oxidative degradation of polystyrene (PS) was studied with methods of Thermogravimetry (TG), Gas Chromatography/Mass Spectrometry (GC/MS), Thermochromatography (ThGC), Size Exclusion Chromatography (SEC), and Fourier Transform Infrared Spectra (IR). APP slightly accelerated thermal degradation of PS in nitrogen due to its acidity. However, whether APP accelerated or retarded thermo-oxidative degradation of PS much depended on addition levels in air. At the low addition levels, APP seemed to retard thermal degradation of PS via formation of a glassy layer; at the high addition levels, APP seemed to accelerate thermal degradation of PS due to its acidity.