Combustion and pyrolysis of poly(ethylene terephthalate). II. A study of the gas‐phase inhibition reactions of flame retardant systems

A device to measure the flammability limits of the gaseous pyrolysis products of polymeric materials has been developed and applied to a study of untreated and flame‐retarded poly(ethylene terephthalate). The results indicate that phosphorus‐containing compounds, like bromine‐containing compounds, are capable of inhibiting the gas‐phase free radical combustion reactions of the pyrolysis products obtained from poly(ethylene terephthalate).