Electron-Beam-Initiated Grafting of Flame Retardants to Fabrics Containing Cellulose. I. Reaction Rate Studies

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Abstract
Triallyl phosphate (I), bis(β-chloroethyl) vinyl phosphonate (II), and a multi-functional condensate of n were grafted to cotton and rayon fabrics and the grafted products screened for potential flame retardancy. Grafting was initiated by a 48 × 6 in. electron beam, in air, from a 550 kV, 20 mA accelerator powered by an insulated core transformer, with a dose rate of approximately 1 Mrad/sec. The monomers were either copolymerized in untreated fabric with N-methylol acrylamide as a coreactant or were copolymerized with pendant double bonds in fabric that had been acrylamidomethylated in a prior step.