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DEVELOPMENT AND APPLICATION OF A PHOSPHORUS - NITROGEN OLIGOMERIC FLAME RETARDANT FOR CELLULOSE-BASED TEXTILE MATERIALS

Cellulose-based textiles, oligomeric flame retardant, eco-friendly synthesis, magnesium hydroxide, phosphorus - nitrogen system, flame resistance, limiting oxygen index.

Authors

This study reports the development of an environmentally friendly and efficient oligomeric flame retardant for cellulose-containing
textile materials. The flame retardant was synthesized using magnesium hydroxide, orthophosphoric acid, urea, and glycerin, and
investigated at three different compositional ratios. Optimal synthesis conditions were determined to be 150 °C for 1.5 h. The
physicochemical properties and flame-retardant performance of the obtained products were systematically evaluated. The results
revealed that the formulation obtained by method 1 exhibited the highest efficiency, increasing the limiting oxygen index of the
treated fabrics up to 29.3%. Chemical interaction between the flame retardant and cellulose hydroxyl groups significantly enhanced
washing durability, providing 8–10 times higher resistance compared to conventional water-soluble flame retardants. The proposed
technology combines high flame resistance, environmental safety, and cost-effectiveness, making it a promising solution for
protective and functional textile applications.