Investigation of the Dyeability of Cotton Fabrics with a Halochromic Dye According to Exhaust and Padding Methods

Abstract

ABSTRACT Smart textiles are an important field in textile since these products are high-added value. One of the applications of smart textiles is chromic textiles, which can be used as a sensor. As is known, exhaust and padding dyeing are the basic methods and for this reason in this study process optimization for application of a halochromic dye (bromcresol purple) to cotton by these methods was carried out. According to experimental results, it can be said that dyeings according to exhaust method using wool dyeing process was successful for cationized cotton. On the other hand, pigment dyeing process used by garment dyers did not give satisfactory results in terms of fastness. In addition, the optimum conditions for padding method were determined as 5 g/L dye and 20 g/L binder. Fabrics showed very good color changing ability with regard to pH both with acid-base solutions and acid-base vapors. Accordingly, it can be said that both exhaust and padding methods can be used for dyeing with halochromic dyes, if optimum conditions are determined.