Synthesis, characterization, and application of novel aryldiazenyl disperse dyes on polyester fabrics.

ABSTRACT: Azo dyes are widely used for dyeing polyester fabrics but require optimization of properties like color strength and fastness. Fourteen novel disperse azo dyes were synthesized from 2,3-naphthalenediol and aniline derivatives to examine their potential for polyester dyeing. The dyes were prepared via diazotization and coupling reactions and characterized using FT-IR, UV-Vis, ¹H NMR, ¹³C NMR, and elemental analysis. Furthermore, several techniques were employed to study the azo-hydrazone tautomerism, including UV-Vis spectroscopy, NMR spectroscopy, and computational methods. DFT computations revealed hydrazone tautomers were more stable than azo tautomers. The prepared azo dyes were applied on polyester fabrics at 2% depth using a high temperature pressure technique in

SUBMITTER: Omar AZ 

PROVIDER: S-EPMC10700463 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature