Abstract
Abstract
This study employed the one-bath pad-dry-cure process using a binder to fix antimicrobial dodecyltriphenylphosphonium bromide (12-TPPB) and pigment onto polyester fabric, thereby avoiding the high energy consumption and low efficiency of traditional multi-step finishing processes. This approach enabled the simultaneous coloration and antimicrobial functionalization of polyester fabric, making it suitable for outdoor textiles requiring both color and antimicrobial properties. The minimum inhibitory concentrations (MIC) of synthesized 12-TPPB against
E. coli
and
S. aureus
were 8 and 2 mg/L, while the minimum bactericidal concentrations (MBC) were 64 and 16 mg/L, indicating broad-spectrum antimicrobial activity. The modified polyester fabrics exhibited excellent antimicrobial properties, retaining ≥ 99.9% activity against
S. aureus
and ≥ 90% against
E. coli
after 50 washing cycles. Importantly, the addition of 12-TPPB did not affect pigment coloration of polyester fabrics. This study offers a new approach for the simultaneous pigment coloration and functionalization of polyester fabrics, which has practical value for application in the outdoor textile industry.