Comparative Assessment of the Dyeing Process for Pristine and Modified Cotton Fabrics towards the Reduction of the Environmental Fingerprint

Though an important and chronic source of dyes released to the environment, determination release that occurs during household or industrial washing is usually disregarded. The main scope this study reveal extent dye through washing, understand if modification cotton fabrics with cationic polymers could reduce it. Modified fabrics, dyed Acid Blue 281 (AB) by a mixture reactive Novacron Yellow S-3R (NY), Ruby S-3B (NR) Dark S-GL (NDB), underwent certified process. were analyzed colorimetrically, while waters spectroscopically, via UV/Vis absorption surface enhanced Raman scattering (SERS). In modified acid dye, increased uptake was noticed exhibited color intensity K/S~16, compared K/S~0.45 unmodified fabrics. corresponding normalized (dye concentration/color factor) in wash water ~1.6 for ~6.5 case indicating significance on both washing. selected dyes, (K/S~10) also (K/S~4.5). An observation, dyeing mixture, selectivity part noticed, since contribution NY (yellow) higher blue (positive value indicator coordinate (b)); however, resulted findings contribute problem control due fabric understanding any potential dye–cotton interactions.