Coloration and application of pH‐sensitive dyes on textile materials

A large number of studies have been devoted to the development of chromic textile materials because of their wide applicability as sensor systems. More recently, pH‐sensitive chromic textiles have also been investigated to a considerable extent, as the pH value is an important parameter in various circumstances. This review therefore elaborates on pH‐sensitive textile materials. The outcome of this review process demonstrates that halochromic dyes can be successfully incorporated into textile materials, leading to flexible sensors. Various textile materials and different application methods have both been shown to be effective. Yet the textile material in which the pH‐sensitive agent is present affects its halochromic behaviour and this factor should thus always be considered. Finally, this review establishes the major potential of pH‐sensitive textile materials.