Abstract
This research focused on preparing antibacterial and flame-retardant multifunctional cotton fabric to decrease the threat of harmful microorganism and fire, which might have huge potential application in household textiles. A water-soluble N-halamine precursor based on s-triazine (TIAPC) was synthesized by introducing iminodiacetic acid (IDA), which can chelate with metal ions to obtain flame retardancy. After coating with TIAPC, the cotton fabric was chlorinated in dilute bleach solution and chelated in metal salt solution to achieve antibacterial and flame-retardant properties. The surface morphology and chemical state of TIAPC-coated cotton fabric were characterized by FT-IR, XPS, SEM and EDX. The chlorinated TIAPC-coated cotton fabric displayed high-efficacy and rapid bactericidal effect against S. aureus and E. coli O157: H7 with 100% bacterial reduction in 1 min. Meanwhile, the chelated TIAPC-modified cotton fabric presented good thermal stability and char-forming capability. The hydrophobic property of modified cotton fabric was greatly improved after chlorination. Besides, this multifunctional coating had little effect on the cytotoxicity, tensile strength, air permeability, whiteness and drape of cotton fabric.
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