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A novel approach for dyeing of polyester using non-aqueous deep eutectic solvent as a dyeing medium

Sushant S. Pawar (Department of Fibres and Textile Processing Technology, Institute of Chemical Technology, Mumbai, India)
Ravindra Adivarekar (Department of Fibres and Textile Processing Technology, Institute of Chemical Technology, Mumbai, India)

Pigment & Resin Technology

ISSN: 0369-9420

Article publication date: 7 May 2020

Issue publication date: 7 May 2020

302

Abstract

Purpose

Textile industry is considered to be one of the largest consumers of water. There needs to be an alternative for water in textile wet processing. Solvent dyeing can be an approach to replace the use of water in dyeing for water conservation.

Design/methodology/approach

In this study, the dyeing of polyester was carried out using conventional and solvent dyeing methods. The solvent used was non-aqueous, deep eutectic solvent (DES) prepared using choline chloride and urea. Dyeing parameters such as time, temperature and pH were optimized for a concentration of dye using the solvent and were compared with the conventional dyeing.

Findings

The prepared solvent was characterized in terms of Fourier-transform infrared resonance and 1H and 13C nuclear magnetic resonance to analyze the reaction between choline chloride and urea. Dyeing performance in terms of K/S and fastness properties of dyed fabrics were evaluated and found to be at par against conventional dyeing.

Originality/value

Use of DES as a dyeing medium is a novel approach in the textile industry.

Keywords

Acknowledgements

One of the authors, S. Pawar, is thankful to University Grants Commission-Basic Scientific Research (UGC-BSR), Government of India, having award letter number F.25–1/2014–15 (BSR)/No. F.5–65/2007(BSR), for providing scholarship.

Funding: The authors declare no competing financial interest.

Citation

Pawar, S.S. and Adivarekar, R. (2020), "A novel approach for dyeing of polyester using non-aqueous deep eutectic solvent as a dyeing medium", Pigment & Resin Technology, Vol. 50 No. 1, pp. 1-9. https://doi.org/10.1108/PRT-09-2019-0085

Publisher

:

Emerald Publishing Limited

Copyright © 2020, Emerald Publishing Limited

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