A novel green approach for dyeing polyester using glycerine based eutectic solvent as a dyeing medium.

Area of Science:

• Textile Chemistry
• Sustainable Materials Science
• Green Chemistry

Background:

• Growing global water scarcity necessitates sustainable solutions in water-intensive industries like textiles.
• Textile dyeing, particularly for polyester, consumes significant volumes of fresh water, with 16% allocated to the dyeing process alone.

Purpose of the Study:

• To develop and evaluate an eco-friendly glycerine-based eutectic solvent (GES) for reducing water consumption in polyester dyeing.
• To optimize dyeing parameters and assess the performance of polyester dyed using GES compared to conventional methods.

Main Methods:

• Preparation and characterization (FTIR) of a novel glycerine-based eutectic solvent (GES) using choline chloride, urea, and glycerin.
• Optimization of dyeing parameters (time, temperature, pH) for polyester fabric using GES.
• Evaluation of dyeing efficacy through color strength, sublimation, wash, and light fastness tests.

Main Results:

• Polyester dyed with GES exhibited improved overall dyeing performance, including enhanced color strength and fastness properties.
• Tensile strength of polyester remained unaffected, while thermal stability was slightly improved compared to conventionally dyed polyester.
• The GES dyeing medium demonstrated comparable or superior results to traditional aqueous dyeing methods.

Conclusions:

• The developed glycerine-based eutectic solvent (GES) presents a viable and green alternative for sustainable polyester dyeing.
• This approach significantly minimizes water consumption in textile wet processing, addressing water scarcity concerns.
• GES offers a promising pathway towards environmentally responsible practices in the textile industry.