Abstract
A novel flame retardant application technique was developed for cotton apparel fabric using
spirocyclicpentaerythritol di (phosphoryl chloride) (SPDPC), which was further synthesized into
bisdiglycolspirocyclicpentaerythritolbisphosphorate (BSPB). The flame retardant agent was then attached to
the fabric using a sol-gel process. The treated fabric was tested on a vertical flame tester which showed very
high flame retardancy as compared to the untreated cotton. TGA analysis exhibited a slow rate of weight loss
and higher ultimate degradation temperature for the FR treated sample. The FR treated sample showed
modest loss in strength while retaining 86.4% of its original strength. The fabric’s appearance did not alter
and the change in stiffness was insignificant as a result of the FR finish.
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