Dyeing and Antibacterial Properties of Some Newly Synthesized Sulfonamide Reactive Dyes

Dyeing performance and antibacterial properties of four novels synthesized reactive dyes (D 1–4 ) were studied in this paper. The dyeing process was achieved under a variety of conditions, embracing concentrations of the dye (1–9%), soda ash (0–25 g L −1 ), Glauber salt (0–100 g L −1 ), dyeing temperature (40–90 °C), dyeing time (30–90 min), and material to dye liquor ratio (1:05–1:80). The maximum color strength (expressed as K/S) values of the dyed cotton fabrics obtained at 3% (based on fabric weight, wof) dye concentration, 20 g L −1 sodium carbonate, 100 g L −1 Glauber's salt, temperature 80 °C (for D 1 , D 2 & D 4 ), and 60 °C (for D 3 ), fixation time 60 min, and material‐to‐liquor ratio (M/L) 1:10. The fastness properties towards washing, perspiration, rubbing, and light were evaluated. All dyed fabrics showed antibacterial potency against both gram positive ( S. aureus ) and gram negative ( E. coli ) bacteria.