International Journal of Advanced Engineering Application

Nano-Mordant Enhanced Natural Dyeing of Cotton Fabric Using Indigo, Marigold, and Pomegranate Rind

Author(s):Kavitha Sundararajan

Affiliation: Department of Apparel and Fashion Design, Park College of Engineering & Technology, Coimbatore, Tamil Nadu, India

Page No: 26-30

Volume issue & Publishing Year: Volume 3, Issue 3, 2026/03/07

Journal: International Journal of Advanced Engineering Application (IJAEA)

ISSN NO: 3048-6807

DOI: https://doi.org/10.5281/zenodo.19344579

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Abstract:
The global textile dyeing industry releases approximately 200,000 tonnes of synthetic dyes into waterways annually, representing a major source of persistent organic pollutant contamination with documented endocrine-disrupting, carcinogenic, and mutagenic effects on aquatic ecosystems and human health. The transition from synthetic reactive dyeing to natural dyeing processes using plant-derived colorants offers environmental sustainability benefits but faces persistent technical challenges: natural dyes' inherent low substantivity to cotton fibres requires mordanting to achieve commercially acceptable colour strength and fastness properties, and the durability of natural dyed textiles has historically been inferior to synthetic dyed equivalents.
This study investigates the enhancement of natural dyeing performance on pre-scoured mercerised cotton fabric using nano-mordants — nano-titanium dioxide (nano-TiO₂) and nano-zinc oxide (nano-ZnO) — relative to conventional mordants (alum, iron, tannin) across three natural dye sources (indigo from Indigofera tinctoria, marigold from Tagetes erecta, and pomegranate rind). Box-Behnken Response Surface Methodology (RSM) optimises four process variables — pH, temperature, time, and material:liquor ratio — to maximise colour strength (K/S value). Multifunctional performance evaluation includes wash, light, and rubbing fastness (ISO 105 series), and antimicrobial activity (AATCC 100) against Staphylococcus aureus and Escherichia coli. Life cycle assessment (LCA) following ISO 14040/44 quantifies and compares GWP, cumulative energy demand (CED), and freshwater eutrophication potential against standard reactive synthetic dyeing. The nano-TiO₂ + tannin combined mordanting strategy achieves K/S of 19.1 (pomegranate) — exceeding industry minimum of 12 — with wash fastness 4-5, light fastness 4, and >99.1% antimicrobial reduction, while reducing GWP by 67.5% relative to reactive synthetic dyeing.

Keywords: The global textile dyeing industry releases approximately 200,000 tonnes of synthetic dyes into waterways annually, representing a major source of persistent organic pollutant contamination with documented endocrine-disrupting, carcinogenic, and mutagenic effects on aquatic ecosystems and human health. The transition from synthetic reactive dyeing to natural dyeing processes using plant-derived colorants offers environmental sustainability benefits but faces persistent technical challenges: natural dyes' inherent low substantivity to cotton fibres requires mordanting to achieve commercially acceptable colour strength and fastness properties, and the durability of natural dyed textiles has historically been inferior to synthetic dyed equivalents. This study investigates the enhancement of natural dyeing performance on pre-scoured mercerised cotton fabric using nano-mordants — nano-titanium dioxide (nano-TiO₂) and nano-zinc oxide (nano-ZnO) — relative to conventional mordants (alum, iron, tannin) across three natural dye sources (indigo from Indigofera tinctoria, marigold from Tagetes erecta, and pomegranate rind). Box-Behnken Response Surface Methodology (RSM) optimises four process variables — pH, temperature, time, and material:liquor ratio — to maximise colour strength (K/S value). Multifunctional performance evaluation includes wash, light, and rubbing fastness (ISO 105 series), and antimicrobial activity (AATCC 100) against Staphylococcus aureus and Escherichia coli. Life cycle assessment (LCA) following ISO 14040/44 quantifies and compares GWP, cumulative energy demand (CED), and freshwater eutrophication potential against standard reactive synthetic dyeing. The nano-TiO₂ + tannin combined mordanting strategy achieves K/S of 19.1 (pomegranate) — exceeding industry minimum of 12 — with wash fastness 4-5, light fastness 4, and >99.1% antimicrobial reduction, while reducing GWP by 67.5% relative to reactive synthetic dyeing.

Reference:

• 1] Bhattacharya, S. D., & Shah, A. K. (1997). Metal ion effect on dyeing of wool fabric with catechu. American Dyestuff Reporter, 86(1), 52–57.
• [2] Giri Dev, V. R., Venugopal, J., Sudha, S., et al. (2009). Dyeing of wool with the extract of dry pomegranate rind. Journal of Natural Fibers, 6(1), 69–84.
• [3] Gupta, D., & Gulrajani, M. L. (2015). Ultraviolet protective properties of plant based indigo dye on cotton. Indian Journal of Fibre & Textile Research, 40(1), 69–75.
• [4] ISO 14040. (2006). Environmental Management — Life Cycle Assessment — Principles and Framework. ISO.
• [5] ISO 14044. (2006). Environmental Management — Life Cycle Assessment — Requirements and Guidelines. ISO.
• [6] Melo, J. V., & Bhardwaj, H. L. (2003). Indigo: Production, chemistry, uses. Advances in Agronomy, 78, 59–87.
• [7] Myers, R. H., Montgomery, D. C., & Anderson-Cook, C. M. (2016). Response Surface Methodology (4th ed.). Wiley.
• [8] Rajesh, R., & Senthilkumar, S. (2019). Wastewater treatment in textile industry: A review. Journal of Environmental Nanotechnology, 8(2), 34–44.
• [9] Shahid, M., Islam, S., & Mohammad, F. (2013). Recent advancements in natural dye applications. Journal of Cleaner Production, 53, 310–331.
• [10] Velmurugan, N., Meenakshisundaram, V. S., & Babu, S. G. (2010). Synthesis of nano-TiO₂ and its dyeability properties on cotton. Indian Journal of Fibre & Textile Research, 35(4), 310–316.
• [11] Zarkogianni, M., Mikropoulou, E., Varella, E., & Tsatsaroni, E. (2011). Colour and fastness of natural dyes. Coloration Technology, 127(2), 80–87.