Preparation of antibacterial conductive cotton fabrics via silane-modified polypyrrole

Abstract

In this study, silane-modified polypyrrole (PPy) was coated onto cotton fabrics through a conventional “in situ polymerization” method. And by chlorination with NaClO solution, we obtained antimicrobial conductive PPy/Si–Cl–cotton fabrics. The PPy/Si–Cl–cotton fabrics were characterized by scanning electron microscopy, energy-dispersive spectroscopy, X-ray photoelectron spectroscopy, Fourier-transform infrared and thermogravimetric analysis. Also, the electrical conductivity property, antibacterial property, and ultraviolet light stability of the coated fabrics were tested. The PPy/Si–Cl–cotton fabrics showed antimicrobial and electrical conductivity properties when the chlorination time was up to 30 s. The chlorine content was 0.30 wt% and the resistance was 26.79 kΩ/cm. The PPy/Si–Cl–cotton fabrics (Cl+% 0.30) showed excellent antibacterial properties against 100% Staphylococcus aureus and 100% Escherichia coli O157:H7 were inactivated within 1 min of contact. Due to the proportional relationship of the electrical conductivity and chlorine content of the PPy/Si–Cl–cotton fabrics, the electrical conductivity of the PPy/Si–Cl–cotton fabrics can be used for monitoring the antimicrobial activity.

Nano TiO2/amino-benzotriazole functionalization of cotton knitted fabrics for ultraviolet protection and antibacteria by pad-dry method

“…[9][10][11] However, bacteria breed easily on cotton fiber, the fabric has the shortcomings of poor ultraviolet resistance, poor antibacterial properties, etc. 3,12,13 In order to exert the advantages of cotton fabric and restrain its disadvantages, it is necessary to modify cotton fabric and study the properties of fiber and fabric after functional treatment. [14][15][16][17] With the aim of improving the ultraviolet resistance, considerable effort has been expanded on ultraviolet absorbers.…”