Application of silver nanoparticles to cotton fabric as an antibacterial textile finish |
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Authors: | Feng Zhang Xiaolan Wu Yuyue Chen Hong Lin |
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Institution: | 1. College of textile and clothing Engineering, Soochow University, Suzhou, 215021, P. R. China 2. Department of Textile Engineering, Shazhou Institute of Technology, Zhangjiagang, 215600, P. R. China
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Abstract: | A novel nano-silver colloidal solution was prepared in one step by mixing AgNO3 aqueous solution and an amino-terminated hyperbranched polymer (HBP-NH2) aqueous solution under vigorous stirring at room temperature. All results of Dynamic Light Scattering (DLS), Transmission
Electron Microscopy (TEM) and UV/Visible Absorption Spectrophotometry indicated that silver nanoparticles had been formed
in colloidal solution. Cotton fabric was treated with nano-silver colloid by an impregnation method to provide the cotton
fabric with antibacterial properties. The whiteness, silver content, antibacterial activity and washing durability of the
silver-treated fabrics were determined. The results indicated that the silver-treated cotton fabric showed 99.01 % bacterial
reduction of Staphylococcus aureus and 99.26 % bacterial reduction of Escherichia coli while the silver content on cotton was about 88 mg/kg. The antimicrobial activity of the silver-treated cotton fabric was
maintained at over 98.77 % reduction level even after being exposed to 20 consecutive home laundering conditions. In addition,
the results of scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) confirmed that silver nanoparticles
have been fixed and well dispersed on cotton fabrics’ surface and the major state of the silver presented on the surface was
Ag0. |
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