CHARACTERIZATION AND EVALUATION OF PHOSPHORUS/NITROGEN-CONTAINING POLYMER AS A DURABLE FLAME ......

Phosphorus/nitrogen-containing polymer (PNCP) was synthesised in one pot as a persistent flame retardant polymer in stable liquid form utilising triethanol amine (TEA), formaldehyde, urea, and phosphoric acid (P). The polymer was applied to cotton fabric samples and analysed by FTIR-ATR. To examine thermal stability, the thermal behaviour of untreated and treated cotton fabric samples was studied utilising TGA and DSC analyses. The flammability resistance of the treated samples was investigated prior to and after various washing cycles. The untreated and treated cotton fabric samples' limited oxygen index (LOI) was also evaluated. Furthermore, the mechanical qualities of the treated cotton fabrics, as reflected by tensile strength, were measured. Furthermore, the morphology of the burnt fabrics (whether untreated or treated) was investigated using a scanning electron microscope (SEM). The results showed that increasing the concentration of triethanol amine or phosphoric acid reduces the flammability of cotton fabrics, increases tensile strength, and increases LOI value, hence improving the flammability retardant of the treated fabric samples.

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