Dyeing of Polyester and Nylon with Semi-synthetic Azo Dye by Chemical Modification of Natural Source Areca Nut

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.

Production of Kenaf Fiber from Shrimp Shells Compostfor Hand Crafts with Natural Dyes

“…The use of mordan can also add a chromophore group in fiber which causes aging of the dyed colour to be older when compared to the results of dyes without using mordan. This is supported also by the research of Zheng et al [18] which states that proving that the soil will become an environmentally friendly natural mordan in the natural dyeing of hemp while Pawar et al [19] stated that chemical modification of natural dyes from areca nut can be used to overcome the limitations of natural dyes such as poor strength, lack of reproducibility due to varying purity and inferior fastness properties for large-scale applications without the presence of mordan.…”

Statistical modelling for optimisation of dyeing of silk with semisynthetic azo dye made by chemical modification of areca nut

“…Ready for dyeing silk fabric was obtained from local market in Mumbai. Semisynthetic azo dyes made by chemical modification of areca nut (AN-1, AN-2) were used for dyeing (Pawar et al , 2018). Auxiliaries such as N, N-dimethyl formamide (DMF), glacial acetic acid, Supergen KDF (levelling agent), Auxipon NP (Non-ionic surfactant) were procured from SD Fine chemical ltd. Mumbai.…”

“…Recently, some researchers have attempted to use natural phenolic compounds for synthesis of azo colourants (Mkungu et al , 2013; Hamilton-Amachree et al , 2014; Mythili and Kalyani, 2015; Rabbi et al , 2018), as these naturally occurring phenolic compounds easily react with diazonium salts via coupling reaction and become substitutes for synthetic phenolic derivatives (Akaranta and Efanga, 1997; Akaranta, 2007). In our previous work, we have also successfully modified Areca nut extract, a rich source of phenolic compound using diazo coupling reaction, and applied for dyeing of polyester and nylon fibres with improved performance properties (Pawar et al , 2018).…”

UPF of Cotton Fabrics Printed with Arecanut Slurry

“…This may be due to uniform coating of arecanut dye on the surface of fabric with 1:1 proportion of sodium alginate and kokilaksha seed gum. Areca catechu contains diverse phenolic compounds including condensed tannins that lead to diffusion of the dye molecules on the surface of fabric which inturns gives an additional coating on plain fabric by even deposition of the dye molecules (Pawar et al, 2017).…”