Silver loading on poly(ethylene terephthalate) fabrics using silver carbamate via thermal reduction

摘要

Silver-coated poly(ethylene terephthalate) (PET) fabrics were prepared through the deposition of silver nanoparticles (AgNPs) generated from thermal reduction of silver 2-ethylhexylcarbamate. The PET fabrics modified with 3-mercaptopropyltriethoxysilane, which acts as an anchor for the AgNPs, were padded with a solution of silver 2-ethylhexylcarbamate in methanol, and were then reduced for in situ generation of Ag-NPs only by heating at 130 A degrees C. The PET/Ag fabrics were characterized by using scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive X-ray (EDX), X-ray photoelectron spectroscopy (XPS), and water contact angle analysis, and by measuring the electrical conductivity and antibacterial activity. A continuous layer of AgNPs with a size from 30 to 100 nm was assembled on the PET fabrics. The PET/Ag imparts high conductivity to the textiles with an electric resistance as low as 3.44 +/- 0.12 Omega, and the antibacterial effects of the treated PET fabric against Escherichia coli O157:H7 (ATCC 43889) and Staphylococcus aureus (ATCC 25923) were examined and were found to be excellent.