| ORIGINAL ARTICLES |
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Dyeing of Polyester and Nylon with Semi-synthetic Azo Dye by Chemical Modification of Natural Source Areca Nut |
| Ashitosh B. Pawar, Sandeep P. More, R. V. Adivarekar |
| Department of Fibers and Textile Processing Technology, Institute of Chemical Technology, Mumbai, India |
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Abstract Various azo compounds (Modified dyes) have been synthesised by chemical modification of areca nut extract (epicatechin), a plant-based Polyphenolic compound to get semi-synthetic dyes. Three different primary amines namely p-nitro aniline, p-anisidine and aniline, were diazotized to form their corresponding diazonium salts which were further coupled with an areca nut extract. Preliminary characterization of the areca nut extract and the resultant azo compounds (Modified dyes) was carried out in terms of melting point, solubility tests, thin layer chromatography, UV-Visible and FTIR spectroscopy. These modified dyes were further applied on polyester and nylon fabrics and% dye exhaustion was evaluated. Dyed fabrics were further tested for their fastness properties such as wash fastness, rubbing fastness, light fastness and sublimation fastness. The results of the fastness tests indicate that, all the three modified dyes have good dyeability for polyester and nylon fabrics. The dyed fabrics were also tested for ultraviolet protection factor which showed very good ultraviolet protection.
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| Keywords
Semi-synthetic azo dye
Chemical modification
Modified dyes
Areca nut
Ultraviolet protection factor
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Corresponding Authors:
R. V. Adivarekar
E-mail: rv.adivarekar@ictmumbai.edu.in
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Issue Date: 27 February 2018
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