Synthesis of new thiophene dyes clubbed with sulfonamide for the creation of antibacterial polyester fabrics

The current study targets to synthesize some new sulfonamido-hydroxythiophene dyes for dyeing polyester fabrics with estimated antibacterial activity. The structure of sulfonamide dyes was adapted by conducting with sulfadimidine and sulfamethaxole through the coupling reaction. The synthesized derivatives were established by spectroscopic tools (Fourier transform infrared spectroscopy, proton nuclear magnetic resonance). Hydroxy-thiophene-containing sulfonamides were utilized for dyeing polyester fabric. The prepared sulfonamido-hydroxythiophene dyes were applied on polyester fabrics after establishing the optimum dye conditions, and afterward their dyeing properties, light, washing, perspiration, rubbing and sublimation fastness were determined. Meanwhile, the improved dyes demonstrated respectable fastness results and antibacterial properties against some gram-positive and gram-negative bacteria.

Application of Orange Phenylazo-β-Naphthol-Containing Sulfonamide Disperse Dyes Designed for Poly(lactic acid)

A series of phenylazo-β-naphthol-containing sulfonamide disperse dyes were applied to poly (lactic acid) fabric by exhaust dyeing. Their dye exhaustion, color strength and color fastness on poly (lactic acid) fabric were assessed. It was found that sulfonamide dyes, especially tertiary sulfonamide dyes, exhibited superior dye exhaustion, color strength and color fastness to washing and sublimation on poly (lactic acid) fabric in comparison to C.I. Solvent Yellow 14 bearing the same chromophore but without sulfonamide moiety.