Diethyl allyl phosphate (DEAP) monomer has been synthesized, and characteri
zed, using H-1 NMR and direct ionization mass spectrometric (DI-MS) techniq
ues. It was free-radically polymerized to yield the poly(diethyl allyl phos
phate) (PDEAP). The direct pyrolysis-mass spectrometric (DP-MS) analysis of
the PDEAP revealed that it undergoes thermal degradation to yield mainly t
he monomer. Utility of PDEAP as a potent flame-retardant additive in polyst
yrene (PS) and poly(methyl methacrylate) (PMMA) has also been established.