Dyeing of polyester fabrics using novel diazo disperse dyes derived from 1, 4-bis (2-amino-1, 3, 4-thiadiazolyl) benzene
Research Journal of Textile and Apparel
ISSN: 1560-6074
Article publication date: 9 November 2022
Issue publication date: 16 July 2024
Abstract
Purpose
This study aims to show the dyeing behaviour of polyester fabrics using four novel heterocyclic disperse dyes.
Design/methodology/approach
The four dyes were synthesized based on 5, 5'-(1, 4-phenylene) bis (1, 3, 4-thiadiazol-2-amine) as a diazonium compound. The UV/Vis absorption spectroscopic data of these disperse dyes while dyeing polyester fabrics were investigated. Following this, the dyeing properties of these dyes on polyester fabrics were investigated under acid condition.
Findings
The results showed that increasing the dyeing temperature from 80°C to 100°C led to an increase in dye uptake for all dyes, but further increases of the temperature to 130°C led to higher dye uptake for dye 3 as the dye exhaustion increased by about 50% from 55.9% to 91.4%.
Originality/value
This study is important as it introduces new dyes for the dyeing of polyethylene terephthalate (PET) fibres with colours that range from yellowish orange to bluish yellow and scarlet red and all with excellent brightness, levelness and depth of shade.
Keywords
Acknowledgements
The authors would like to thank Department of Chemistry at the Faculty of Science, Al-Azhar University, Egypt, for supporting this work.
Citation
Ali, A.A., Alshukur, M., Ashmawy, A.M., Mahmoud, A.M., Saleh, A., Nassar, H.S. and Yao, B. (2024), "Dyeing of polyester fabrics using novel diazo disperse dyes derived from 1, 4-bis (2-amino-1, 3, 4-thiadiazolyl) benzene", Research Journal of Textile and Apparel, Vol. 28 No. 3, pp. 478-492. https://doi.org/10.1108/RJTA-04-2022-0035
Publisher
:Emerald Publishing Limited
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