21 research outputs found
Synthesis, stability and printing properties of a novel 2âsulphophenoxyâ4âchloroâsâtriazine reactive dye for inkâjet printing of wool
We report here the synthesis and characterisation of a new mediumâreactivity reactive dye containing 2âsulphophenoxyâ4âchloroâsâtriazine, having enhanced the activity of the chlorine atom for further substitution by the functional groups carried by wool fibre. In addition, a dichloroâsâtriazine dye was also synthesised for the purpose of comparison. The progress of synthesis reactions and purity of the dyes were determined using capillary electrophoresis and thin layer chromatography. The molecular structure and the chemical compositions of the synthesised dyes were confirmed using Fourier Transformâinfrared spectral data and elemental analyses. The inks containing the synthesised dyes were formulated and inkâjetâprinted onto wool fabrics and then the printed fabrics were steamed at 102°C. Compared with the dichloroâsâtriazine dye, superior performance in terms of ink stability, K/S and dye fixation was observed for the new 2âsulphophenoxyâ4âchloroâsâtriazine dye. In addition, the light fastness of the fabric printed with the inks containing the new dye was 0.5âgrade greater than that of the fabric printed with the inks containing the dichloroâsâtriazine dye, and no changes in shade and staining were observed following wash fastness tests of the fabrics printed with the inks containing the new dye