Synthesis and Characterization of Phosphorus Containing N- Heterocyclic Functionalised Poly (Vinylalcohol) with Enhanced Flame Retardancy and Biological Activity

Functional modification of PVA or introducing reactive functional groups into the polymer chain has been believed to have basic significance while expanding its application. Phosphorous containing nitrogen heterocyclic compounds have been synthesized. The synthesized compounds were characterized using FTIR, NMR spectral studies. Thermo gravimetric analysis (TGA) display that organophosphorous-N-heterocyclic modified PVA has thermally more stable than that of unmodified PVA. Morphological and XRD have also been carried out to notify the surface morphology and amorphous nature of the organophosphorous N-heterocyclic modified polymers. The results of antibacterial activity among the modified and unmodified PVA have been compared. In general, heterocyclic modified PVA has superior in overall properties viz., thermal stability, organosolubility, flame retardancy, biological activity than that of pure PVA.