Synthesis and Dyeing Properties of Acid Dyes Derived from 1-amino-2-naphthol-4-sulphonic Acid
World Journal of Applied Chemistry
Volume 4, Issue 4, December 2019, Pages: 63-68
Received: Aug. 29, 2019;
Accepted: Sep. 20, 2019;
Published: Oct. 28, 2019
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Olawale Olayinka Omotosho, Department of Polymer and Textile Engineering, Ahmadu Bello University, Zaria, Nigeria
Umar Salami Ameuru, Department of Polymer and Textile Engineering, Ahmadu Bello University, Zaria, Nigeria
Natural dyes are derived from natural sources such as plants, animals and minerals. They are mostly non-substantive and can be applied on textiles materials by using mordants. Synthetic dyes are derived from organic or inorganic compound. They are cheaper, offer a vast range of new colour and impart better properties to textile materials. Synthetic dyes are widely used in industries amongst which textile processing industries are the major consumers. Acid dyes are soluble in water and it can be permanently fixed to the fibre with the addition of a weak acid and heat. A series of acid dyes were synthesized by diazotization of 1-amino-2-naphthol-4-sulphonic acid and coupled with various naphthalene derivatives such as 1-nitroso-2-naphthol, 2-nitroso-1-naphthol, 1-naphthol, 2-naphthol and N, N-dimethyl aniline. Visible absorption spectra of the dyes were examined in distilled water, ethanol and ethanol plus few drop of concentrated hydrochloric acid. The FT-IR analysis was determined to confirm the functional group present in the synthesized dye. The dye was applied on polyamide (Nylon) fabric and the colour parameters of dyed fabrics were examined to have good exhaustion between pH 3–4.5 and more intense. After the dyeing process, the fabric was subjected to washing and light fastness. The remarkable degree of levelness and brightness of the synthesized acid dye on the nylon fabric is of good penetration, excellent affinity and very good fastness properties.
Olawale Olayinka Omotosho,
Umar Salami Ameuru,
Synthesis and Dyeing Properties of Acid Dyes Derived from 1-amino-2-naphthol-4-sulphonic Acid, World Journal of Applied Chemistry.
Vol. 4, No. 4,
2019, pp. 63-68.
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