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International Research Journal of Chemistry and Chemical Sciences
Influence of mordant application on the dyeing of nylon substrate with natural dyes extracted from flowers
Agrawal Bipin J.
Department of Textile Chemistry, Faculty of Technology & Engineering,
The Maharaja Sayajirao University of Baroda, Vadodara-390 001 (Gujarat), INDIA
Accepted 11 September 2017
Citation: Agrawal BJ (2017). Influence of mordant application on the dyeing of nylon substrate with natural dyes extracted from flowers. International Research Journal of Chemistry and Chemical Sciences, 4(1): 067-074.
Copyright: © 2017 Agrawal BJ. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.
The manufacturing of synthetic dyes and their extensive utilization commercially for the coloration of various textiles has been disparaged due to introduction of contamination into the environment. Natural dyes, which were also used prior to the advent of synthetic dyes, in textile wet processing for dyeing and printing, may be considered as an environmental-friendly alternative for the preservation of valuable nature. Natural dyes, particularly those derived from various vegetable resources are considered safe owing to their biodegradable and non-carcinogenic characteristics. The present study deals with the application of natural dyes, extracted from floral parts of various plants, onto a synthetic substrate, nylon. The flowers selected for the dyeing of nylon are – China rose/Gurhal (Hibiscus rosa-sinensis), Marigold/Genda (Tagetus petula), Flame of the forest/Palas (Butea monosperma) and Yellow Bells/Piliya (Tecoma stans). The application of the dyes, extracted from respective flowers, has been performed on pre-mordanted samples using exhaust as well as padding techniques. The effect of mordant on the shade, tone, color strength (K/S) values and various fastness properties has been studied on natural color dyed nylon samples. Enhancement in depth of shade, tone/hue variation and improvement in fastness characteristics occur owing to better fixation of the dyestuff onto the mordanted substrate.
Keywords: color strength, fastness properties, flower extract, mordant, natural vegetable dye