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Jian Liu,Chaohong Dong,Dongdong Wei,Zheng Zhang,Weihao Xie,Qun Li,Zhou Lu 한국섬유공학회 2019 Fibers and polymers Vol.20 No.7
A novel polysiloxane quaternary ammonium salt (NCTSi) was synthesized and used as antibacterial andhydrophobic agent for cotton fabric. The chemical structures were characterized by FT-IR. The surface morphology of treatedcotton fabrics was characterized by scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS). Thecotton fabrics treated with NCTSi showed excellent antibacterial properties against Gram-positive bacteria S. aureus andGram-negative bacteria E. coli. The E. coli antibacterial rate was about 99.52 % and the S. aureus antibacterial rate was about98.33 %, with only a slight decrease after 20 cycles of standard washing, to 91.43 % and 93.33 %, respectively. The inhibitionzone was 2 mm and 2.5 mm against E. coli and S. aureus when NCTSi concentration was 4 %. The treated cotton fabricsprovided excellent hydrophobic properties, and the water contact angle (WCA) reached 124.14 º compared to pure cottonfabrics. The mechanical properties and whiteness were also investigated. As a result of the performed modifications,multifunctional fabrics with a considerably increased hydrophobicity and high antibacterial property were obtained.
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