The thermal degradation pathway studies of a phosphazene derivative on cotton fabric

Investigation of bisphenol-substituted spirocyclic phosphazenes as cotton textile–based flame retardants

“…NMR spectra were recorded on a Varian 400-MHz instrument using CDCl 3 as solvent. 1 H and 13 C NMR chemical shifts are given in ppm (δ) referenced to tetramethylsilane (TMS). 31 P chemical shifts are given in ppm (δ) referenced to a coaxial NMR tube containing 85% aqueous H 3 PO 4 .…”

“…29,30 These degradation products are similar to what has been observed previously for related cyclotriphosphazenes. 13 Thus, the primary decomposition products are the release of aromatic, amino, and phosphorous functionalized compounds that provide a protective char barrier that inhibits the production of flammable gases.…”

“…[4][5][6] Given the pressing need to find evermore effective FRs, this research group began investigating phosphazene derivatives which have high percentages of phosphorus and nitrogen in their molecular structures. There are many journal articles written and patents issued concerning polymeric phosphazene blends, [7][8][9][10][11][12][13] but this research focused on monomeric spirocyclic phosphazene derivative forms that are covalently linked to cotton. Specifically, this research searched for easily synthesized, high-yielding phosphazene derivatives, which offer promise as FRs and are covalently linked to cotton fabrics, unlike the aforementioned blends which are extruded as polymers or coated onto fabric.…”

Star-Shaped Crosslinker for Multifunctional Shape Memory Polyurethane

“…They exhibit the properties of both inorganic and organic substances and are crucial fine chemical intermediates [19]. In addition to the anti-oxidation, reduction and biocompatibility property, cyclophosphazene derivatives also show the advantage of flame-retardance because of the halogen-free and high phosphorus-nitrogen structure [20]. This specific structure and chemical property can be used to reasonably prepare star-shape polymer with desired properties, making it widely explored in the fields of tissue engineering and flame-retardance [21].…”

Effect of Cyclotriphosphazene-Based Curing Agents on the Flame Resistance of Epoxy Resins

“…Among them, phosphazene-based compounds bearing simultaneously phosphorus and nitrogen atoms in their structure have attracted a great attention [13][14][15][16][17][18][19][20][21][22]. This class of products brings a synergistic flame retarding effect: phosphorus atoms act as radical scavengers and quenchers [23] and nitrogen atoms release inert gaseous by-products that create a porous network providing thermal insulation during the combustion [24][25][26]. Other flame retardants include nanocomposites [27], silicon-based compounds [28] and metal-based flame retardants [29][30][31].…”