Effect of Pre-heat-setting on Colour of Polyester Fabrics Dyed with a Disperse Dye

Abstract

<span style="font-size:11.0pt;font-family:" calibri","sans-serif";="" mso-ascii-theme-font:minor-latin;mso-fareast-font-family:"times="" new="" roman";="" mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:minor-latin;="" mso-bidi-font-family:"times="" roman";mso-ansi-language:en-us;mso-fareast-language:="" en-us;mso-bidi-language:ar-sa"="">The effect of pre-heat-setting, at different temperatures and durations, of polyester fabrics dyed with a disperse dye (Dispersol Red B-3B) on dye uptake. dye penetration and the final colour of the fabric was studied. Variation in dye uptake was due to the variation in tension developed during heat-setting and structural changes. Colour measurement was found useful for predicting the optimum temperature duration of heat treatment and limits of variation tolerable for heat-setting a particular fabric with a particular dye. A new method is suggested for predicting the dye uptake from Δ <i>E </i>(total colour difference from the standard white).</span>