<b>β</b>-Cyclodextrin: Disperse yellow 211 complexes improve coloristic intensity of polyamide dyed knits

Dyes are complex molecules that can sometimes cause damage to the aquatic environment and harm human health. They often not completely removed from effluent by usual treatments; therefore, efforts have been made increase their exhaustion dyeing through chemical physical processes. In this context, use of β-cyclodextrin (β-CD) as auxiliary agent promotes reduction harmful products, also increasing color intensity fabric. paper, β-CD was used a complexing dye polyamide (PA) using C.I. Disperse Yellow 211 (DY211) in order improve β-CD:DY211 complex. The conventional process were compared, adsorption kinetics, isotherms, coloristic evaluated. shifts FTIR spectra thermal stability evidenced formation Regarding kinetics isotherm, pseudo-first-order model most appropriate describe process, while Nernst isotherm one best represented results. Categorically, samples dyed with obtained higher comparison process. With evidence, it is possible conclude cyclodextrin suitable replacement for environmentally textile aides without adding further steps into or need additional equipment.