Abstract
The flammability properties of three co-polymers of methyl methacrylate (MMA) and phosphorylated methyl methacrylate CH 2C(CH 3)C(O)OCHRP(O)(OC 2H 5) 2 with R H, C 6H 4Br (bromophenyl) and C 10H 7 (naphthyl) have been investigated by cone calorimetry. The rate of heat release (RHR) peak and the CO 2 production rate are significantly decreased with respect to PMMA. The chars produced during cone calorimetry tests were also investigated by scanning electron microscopy (SEM), micro-Raman and diffuse reflectance IR spectroscopy (DRIFT) and showed the presence of phosphocarbonaceous structures. Phosphorus appears to play a role as well in the gas phase as in the condensed phase. The results confirm that the studied materials have interesting fire retardant properties.
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