Abstract
Development of durable flame retardant textiles and the exploration of alternate methods to achieve the same has remained an important quest for research. In the present work, the efficacy of sulphamic acid, which is nitrogen and sulphur-containing compound, was studied as a flame retardant for wool. The flammability characteristics of wool fabrics were evaluated by limiting oxygen index (LOI), vertical flammability test as also by the total heat released and the heat release rate. The elemental analysis of fabrics and char were done using EDX and CHNS. The changes in the chemistry of the modified wool were characterised by FTIR spectroscopy. In addition, the durability of the finish against repeated home launderings up to 30 washes has been reported. Sulphamic acid has been found to be an efficient flame-retardant for wool. Durability of the treatment was significantly improved when treated along with 1,2,3,4-Butane tetracarboxylic acid (BTCA).
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