Simultaneous Dyeing and Functional Finishing of Linen Fabric with Cinnamon Bark Extract using Chitosan as a Mordant

Articles in Press

Document Type : Original Article

Authors

1 INDIAN INSTITUTE OF TECHNOLOGY (I.I.T.) I.I.T., DELHI, India

2 Dept. Of Textile And Fibre Engineering IIT Delhi

Abstract

The resurgence of environmentally friendly products, such as natural dyes, is inevitable in the textile industry. Significant advantages can be gained in terms of combined dyeing with multifunctional finishing using natural dyes. In this study, linen fabric was dyed with aqueous cinnamon bark extract (CBE), using chitosan as an eco-friendly mordant. Initially, linen fabric was treated with chitosan solution using the pad-dry-cure method, and this chitosan-mordanted fabric was dyed using the exhaust method at different shades (%). After dyeing, colour and functional aspects of dyed linen, like colour strength, fastness properties, antibacterial activity, antioxidant activity, UV protection and mosquito repellency, were evaluated. The dyed linen with superior properties in terms of wash fastness (4-5), mosquito repellency (>90%), good UV protection (UPF upto 25), antibacterial activity against E. Coli (upto 92.5%) and moderate antioxidant activity (upto 66%) was obtained. Additionally, treated linen fabrics showed good light fastness (3-4). Cinnamon bark extract (CBE) containing cinnamaldehyde and other phenolic compounds was confirmed as a dye and finish for linen fabric. The interaction of cinnamon biomolecules with chitosan was confirmed using UV-Visible analysis and other analytical techniques. The structure-property relationship of dyed linen responsible for colouration and functional properties were discussed.

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Main Subjects

Progress in Color, Colorants and Coatings

Articles in Press, Accepted Manuscript
Available Online from 03 January 2026

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