Fabrication of pH-sensitive silk and wool fabrics treated with pectin for multichromic sensor dyes with biochromic...

The Butterfly pea flowers (BPFs) edible blooms are plentiful in blue-colored anthocyanins (73.85 %). Known as ternatins, they demonstrated a wide spectrum of color change and good thermal stability at varied pH values. This investigation is meant to generate a new generation of intelligent silk and wool fabrics that are dyed with the acidic aqueous extract of BPFs, a natural chromic dye. These fabrics' biochromic performance depends on the BPFs extract's thermochromic and halochromic properties. Smart thermochromic dyed fabrics exhibit colorimetric characteristics and overall color change at a variety of pH levels. The hue of the halochromic dyed fabrics' acid-base sensitivity was studied and showed a reversible transformation to pink when exposed to HCl gas and to green when it was subjected to ammonia vapor. The study reveals that BPFs extract can effectively function as a thermochromic and halochromic sensor dye for proteinic fabrics, exhibiting strong fastness properties at various pH values. The self-cleaning activity (SC) and the tensile strength (TS) of colored treated proteinic fabrics are superior in the range of 74.55-73.95 % and 49.99-55.04 KgF respectively than untreated fabrics. The unique fabrication of multichromic dyed fabrics using BPFs extract could facilitate the creation of multifunctional smart textiles or clothing.