Research Article

Synthesis and Application of Monoazo Disperse Dyes Derived from Naphthalimide Derivatives on Polyester Fabrics

Enejo B. D1*, Ameuru S.U.2, Abdulraheem Giwa3, Bukhari M. M.4
1 Department of Polymer and Textile Engineering, Ahmadu Bello University, Zaria. Nigeria
2 Department of Polymer and Textile Engineering, Ahmadu Bello University, Zaria-Nigeria
3 Ahmadu Bello University Zaria
4 Department of Polymer and Textile Engineering, Ahmadu Bello University, Zaria, Nigeria
* Corresponding author: blessingdaniel7891@gmail.com
Published: Jun, 2026
DOI: 10.67637/njt.2026.lfrk3uu7
Pages: 84-95
Views: 22
Downloads: 33

Abstract

New series of monoazo disperse dyes were synthesized using 6-amino-2-(4-(4-aminobenzyl)phenyl)-1H-benzo[de]isoquinoline-1,3(2H)-dione by coupling with differentsubstituted anilines and naphthalene derivatives. The synthesized intermediates and the dyeswere purified by recrystallization method. The structure of the synthesized intermediates anddyes were characterized using FTIR, 1HNMR, MS and UV-visible spectroscopic techniques.The spectrophotometric investigation of the synthesized dyes in solvent of different polaritieswere carried out in order to obtain their absorption maxima and molar extinction coefficient.The wavelength of maximum absorption of all the synthesized dyes ranging from 425–591 nmand molar extinction coefficient ranging from 14,300 – 35,400 Lmol-1cm-1 in DMF, thus,making them suitable for use as commercial dyes. The synthesized dyes were applied onpolyester fabrics using carrier exhaust dyeing method at 100⁰C. The colour build up and dyeingproperties such as wash, light and perspiration fastness were evaluated to be very good toexcellent with fastness rating of (3-5) for wash and perspiration fastness and rating of (4-6) forlight fastness. The remarkable degree of brightness after washing is an indication of goodaffinity of the dyes on the fabrics.

Keywords

Disperse dyes Solvatochromism Dyeing Polyester fabrics Fastness properties

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How to Cite

D, E. B., S.U., A., Giwa, A., & M., B. M. (2026). Synthesis and Application of Monoazo Disperse Dyes Derived from Naphthalimide Derivatives on Polyester Fabrics. Nigerian Journal of Textiles, 12(1), 84-95. https://doi.org/10.67637/njt.2026.lfrk3uu7

E. B. D, A. S.U., A. Giwa, and B. M. M., "Synthesis and Application of Monoazo Disperse Dyes Derived from Naphthalimide Derivatives on Polyester Fabrics," Nigerian Journal of Textiles, vol. 12, no. 1, pp. 84-95, June 2026. doi: 10.67637/njt.2026.lfrk3uu7

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