Show simple item record

dc.contributor.authorMaesta Bezerra, Fabricio
dc.contributor.authorde Carvalho Cotre, Dayane Samara
dc.contributor.authorPlath, André
dc.contributor.authorBeraldo Firminio, Helen
dc.contributor.authorde Lima, Miliane Aparecida
dc.contributor.authorLis Arias, Manuel José
dc.contributor.authorSamulewski, Rafael Block
dc.contributor.authorMurilo Pereira, Moisés
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.identifier.citationMaesta, F. [et al.]. ß-Cyclodextrin: Disperse yellow 211 complexes improve coloristic intensity of polyamide dyed knits. "Textile research journal", 9 Juny 2021,
dc.description.abstractDyes are complex molecules that can sometimes cause damage to the aquatic environment and harm human health. They are often not completely removed from effluent by the usual treatments; therefore, efforts have been made to increase their exhaustion from dyeing through chemical and physical processes. In this context, the use of ß-cyclodextrin (ß-CD) as dyeing auxiliary agent promotes the reduction of harmful products, also increasing the color intensity of the fabric. In this paper, ß-CD was used as a complexing agent to dye polyamide (PA) using the dye C.I. Disperse Yellow 211 (DY211) in order to improve dye exhaustion and color intensity using the ß-CD:DY211 complex. The conventional dyeing process and ß-CD:DY211 dyeing process by exhaustion were compared, and adsorption kinetics, isotherms, and the coloristic intensity were evaluated. The chemical shifts in the FTIR spectra and the thermal stability evidenced the formation of the ß-CD:DY211 complex. Regarding dyeing kinetics and isotherm, the pseudo-first-order model was the most appropriate to describe the process, while Nernst isotherm was the one that best represented the adsorption results. Categorically, the samples dyed with the ß-CD:DY211 complex obtained higher coloristic intensity in comparison with the conventional process. With this evidence, it is possible to conclude that cyclodextrin is a suitable replacement for environmentally harmful textile aides without adding further steps into the dyeing process or the need for additional equipment
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Enginyeria tèxtil::Fabricació tèxtil::Tintura
dc.subject.lcshDyes and dyeing
dc.subject.lcshColoring Agents--chemistry
dc.titleß-Cyclodextrin: Disperse yellow 211 complexes improve coloristic intensity of polyamide dyed knits
dc.subject.lemacTints i tenyit
dc.subject.lemacColorants -- Química
dc.contributor.groupUniversitat Politècnica de Catalunya. POLQUITEX - Materials Polimérics i Química Téxtil
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (author's final draft)
local.citation.authorMaesta, F.; de Carvalho, D.; Plath, A.; Beraldo, H.; de Lima, M.; Lis, M.; Samulewski, R.; Murilo, M.
local.citation.publicationNameTextile research journal

Files in this item


This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain