A comparative study of the effects of fire retardants on the pyrolysis of cellulose and Pinus halepensis pine-needles

摘要

Differential scanning calorimetry (DSC) and direct inlet mass spectrometry (DI-MS) were used for studying the effects of fire retardants on the pyrolysis of cellulose and Pinus halepensis pine-needles. The compounds (NH_4)_2HPO_4 and (NH_4)_2SO_4 were used as fire retardants at various concentration levels. DSC showed that the addition of the fire retardants results in a shift to lower pyrolysis temperatures for cellulose and in an increase in the pyrolysis residues for both cellulose and pine-needles. DI-MS was used for monitoring the evolution rate of various pyrolysis products and for the identification of the various pyrolysis phases.