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International Journal of Recent Trends in Science and Technology, ISSN 2277-2812 E-ISSN: 2249-8109

Volume 9, Issue 1, November 2013 pp 72-75

Research Article

Effect of Chitosan and Mordants on Dyeability of Cotton Fabrics with Natural Dye from Barks of Ficus Religiosa Linn


P. Saravanan1, G. Chandramohan2, J. Maria Jancy Rani3, P. Shanmuga Sundaram4

1Assistant Professor, Department of Chemistry, Kings College of Engineering, Punalkulam, Thanjavur, Tamil Nadu-613303, INDIA.

{2Associate Professor, 3Research Scholar} Department of Chemistry, A.V.V.M. Sri Pushpam College, Poondi, Thanjavur, Tamil Nadu 613502, INDIA.

4TÜV Rheinland Bangladesh Pvt. Ltd., Gulshan-2. Dhaka-1212, BANGLADESH.


Academic Editor : Dr. Aher K.R.



Natural dyes can be anything that comes from natural sources such as barks, flowers, leaves, roots, insects, shells, and mineral substances. They are used for food coloring, painting and textile dyeing. Using natural dyes in textile processing have been shown a greater interest because they are more eco-friendly than synthetic dye and show a variety of colors from one natural dye depending on dyeing process and types of mordants. In present study, the cotton fabric was treated with chitosan at different concentrations to finda suitable concentration on dye ability with natural dye from barks of Ficus Religiosa Linn. The influence of dyeing methods with mordants, i.e. pre-mordanting, post-mordanting and simultaneous mordanting was determined. The light and wash fastness of chitosan treated samples were measured compared with untreated samples. Chitosan-treated cotton fabric improved both dyeability and fastness compared with untreated cotton fabric. The cotton fabrics treated with chitosan not only provided better depth of shade but also provided better wash fastness and light fastness than those of the untreated fabrics. The use of different mordants and mordanting methods affected the dye shade and depth of shade differently on the dyed fabrics both with and without chitosan. The range of colour developed on dyed materials were evaluated in terms of (L*a*b*) CIELAB coordinates and the dye absorption on the cotton was studied by using K/S values.