Effect of Zirconium Chloride as a Mordant on Flammability of Dyeing Wool with Madder

摘要

In this research, the effect of zirconium salt as a mordant on flammabilityof dyeingwool fabric with madder was studied.Wool fabrics were treated with different concentrations of zirconium salt in water solution including 1, 3, 6 and 9% o.w.f. and the dyeing process was carried out on the fabrics in the states before, simultaneously and after-mordanting with madder. Formic acid and oxalic acid were used to generate acidic pH.The chemical characteristics and the changes induced by zirconium were investigated by Fourier-transform infrared spectra (FTIR). Flammability of samples was investigated by horizontal flammability test (HFT). The surfaces of untreated and treated fabrics were evaluated by scanning electron microscopy to observe the morphological changes. The EDX results showed presence of zirconium salt on the surface of wool.The results show that zirconium treated fabrics have a higher weight and lower bending rigidity compared to untreated ones. Furthermore.the zirconium mordant made the wool fabric hydrophobic.