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Thermodynamic and kinetic parameters of polyester dyeing with Disperse Blue 56 using bio-based auxiliaries and co-solvent microemulsion
- Source :
- Recercat. Dipósit de la Recerca de Catalunya, instname, UPCommons. Portal del coneixement obert de la UPC, Universitat Politècnica de Catalunya (UPC)
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Abstract
- The aim of the study was to dye polyester fabric with a low molecular weight anthraquinone type disperse dye (C.I. Disperse Blue 56), with n-butylacetate as co-solvent in the microemulsion system and the presence of two bio-based auxiliaries (ortho-vanillin and coumarin), at temperatures lower than 100℃. In order to investigate the influence of temperature and auxiliaries on the kinetic dyeing process, the energy of the activation was determined by the kinetic rates constants. The activated entropy values were obtained by the theory of absolute rates of dyeing and diffusion of the activated state of the dye for the disorder state of the dyeing system. Higher activated energies were found, as well as higher activated entropy, meaning higher dye absorption, for polyester samples dyed with ortho-vanillin/n-butylacetate compared with polyester samples dyed with coumarin/n-butylacetate. Color strength values of the polyester fabric dyed using the proposed microemulsion dyeing system at low temperature (95℃) were similar to polyester fabric dyed with a conventional dyeing system at high temperature (135℃). Regarding color fastness to washing and ironing, it was found that the use of the auxiliaries did not significantly modify the fastness values of the dyed samples.
- Subjects :
- Polymers and Plastics
ortho-Vanillin
Polyester
Kinetic dyeing
02 engineering and technology
Coumarin
010402 general chemistry
Kinetic energy
01 natural sciences
Anthraquinone
Disperse dye
chemistry.chemical_compound
Chemical Engineering (miscellaneous)
Microemulsion dyeing
Microemulsion
Enginyeria tèxtil::Fabricació tèxtil::Tintura [Àrees temàtiques de la UPC]
Apparent activation energy
Poliester
Tints i tenyit -- Fibres tèxtils sintètiques
n-butylacetate
021001 nanoscience & nanotechnology
0104 chemical sciences
Ortho-vanillin
Polyester fibers
chemistry
Chemical engineering
Teixits i tèxtils -- Tints i tenyit
Dyeing
0210 nano-technology
Dyes and dyeing--Textile fibers, Synthetic
Fibres tèxtils sintètiques -- Tints i tenyit
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Recercat. Dipósit de la Recerca de Catalunya, instname, UPCommons. Portal del coneixement obert de la UPC, Universitat Politècnica de Catalunya (UPC)
- Accession number :
- edsair.doi.dedup.....9830762deff400dad5bf5cd3b7653e21