The Antibacterial and Hydrophobic Cotton Fabrics Constructed by Multifunctional Polysiloxane and TiO 2 Nanoparticles

Multifunctional polysiloxane was synthesized by introducing N-halamine compound precursor and stearyl methacrylate into polyhydromethylsiloxane, and characterized by Fourier transform infrared (FT-IR) and 1 H nuclear magnetic resonance (NMR). Cotton fabrics with antibacterial and hydrophobic properties were prepared via a simple one-pot method with the synthesized polysiloxane and rutile TiO 2 nanoparticles. The prepared cotton fabrics was characterized by scanning electron microscopy (SEM), FT-IR, X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). The results demonstrated that prepared cotton fabrics could inactivate 3.9 × 10 6 cfu/sample of S. aureus and 4.8 × 10 6 cfu/sample of E. coli O157:H7 within 30 min of contact time, and the water contact angle of the treated fabrics was 133°. The prepared cotton fabrics also exhibited excellent stability against 50 abrasion cycles. After 50 washing cycles, 72% of the chlorine content on prepared cotton fabrics could be recovered after rechlorination. And the antibacterial hydrophobic cotton fabrics loaded with TiO 2 possessed higher UV stability than cotton fabrics only treated with PTSAMS-Cl. Furthermore, the breaking strength of antibacterial hydrophobic cotton fabrics was decreased while the wrinkle resistance was improved.