Effect of Wet Processing Parameters and Type of Weave on the Shrinkage of Polyester/Viscose Blend Fabrics

Abstract

<span style="font-size:11.0pt;line-height:115%; 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 dependence of fibre shrinkage on wet processing parameters, viz. dry setting temperature, <i>p</i>H of the bath conditions of hot water treatment and repeated wetting-drying treatments, has been studied in the case of three common polyester/viscose blend (15/85, 30/70 and 48/52) compositions adopting different weaves—plain twill hopsack and satin. Blends with higher viscose contents showed greater combined swelling and relaxation shrinkages on treatment with distilled water and alkaline solutions. On the other hand blends with higher polyester contents exhibited greater combined relaxation and swelling shrinkages on being subjected to dry heat. Weaves with longer floats and fewer interlacements showed greater shrinkage compared to other weaves.</span>