Citation

Masuko F, Mitani C, Sakamoto M. Fire Mater. 2002; 26(4-5): 225-234.

Copyright

(Copyright © 2002, John Wiley and Sons)

DOI

unavailable

PMID

unavailable

Abstract

Graft copolymerization of an oligomeric vinyl phosphonate (FYR) and/or N-methylolacrylamide was made onto cotton fabrics by a pad-dry-steam method. The limiting oxygen indices (LOI) of the treated samples confirmed the P-N synergism. Simultaneous TG/DTA measurements indicated that an exothermic peak appeared at a temperature near that where the main decomposition ended for the samples of high LOI (greater than 24) values, either prepared with FYR or with both monomers. The peak temperature, however, did not correlate directly with the LOI of the sample. Curie-point pyrolysis at 590degreesC was extensively studied on the treated samples by GC and GC-MS. Most of the main degradation products of the untreated cotton included hydroxyacetaldehyde, 1-hydroxypropan-2-one, ethyl methyl ketone and acrolein. The amounts (per unit weight of the cellulose fraction of the samples) of these carbonyl compounds were much reduced by the introduction of a small amount of phosphorus into cotton. The decrease in the amount (per unit weight of the treated sample) of acrolein correlated highly with the increase in LOI.