Synthesis of a Novel Acid Dye to Impart Mosquito Repellency and UV Protection to Nylon

Novel routes are continuously innovated in the textile industry to obtain high-performance products, and the development of functional textiles using functional dyes is an attractive alternative to existing methods. In this context, the current study reports the synthesis of a new acid dye to develop mosquito-repellent and UV-protective nylon. The acid dye was synthesized by reacting a diazotized derivative of ethyl anthranilate (ethyl 2-aminobenzoate) with H-acid (4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid). The synthesized dye was thoroughly characterized through Fourier-transform infrared spectroscopy (FTIR), proton nuclear magnetic resonance (1H NMR),13C NMR (Carbon-13 NMR) spectroscopy, elemental analysis (CHN analyzer), and UV-Vis spectroscopy. The dye was used to dye nylon, and dyeing characteristics (exhaustion and fixation) were examined. The functional effects and coloring properties of dyed fabrics were further investigated. The dyed fabrics were also characterized by X-ray diffraction (XRD) and thermogravimetric analysis (TGA). The dyed fabrics were imparted with 100 % mosquito repellency and excellent UV protection.