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

Abstract

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 o 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 Ω, 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.

Preparation of Cotton Fibers/Silver Composite by a Facile Dipping Method via Thermal Reduction Using Carbamate-type Silver Precursor and Their Properties

“…The elemental weight and atomic level were increased to a level greater than that reported previously. 42,43 This confirmed the presence of silver in the cotton fibers.…”

Recent Advances in the Chemistry of Metal Carbamates

“…The generated silver nanoparticles can be adsorbed on various matrices such as polymers (PVA, PMMA, PET), graphene, thiol-modified carbon nanotubes or fabrics (cotton, silk). The resulting silver-coated materials have been investigated for their conductive properties [345][346][347][348] and/or antibacterial/antimicrobial activity [349][350][351][352][353][354][355]. In addition, if the reduction is performed in the presence of ethyl cellulose, a silver paste is obtained, and this can be deposited on a suitable substrate and sintered to provide a silver conductive film [356][357][358].…”

Investigation of the antimicrobial and wound healing properties of silver nanoparticle-loaded cotton prepared using silver carbamate

“…However, AgNPs with high surface coverage were formed at higher concentrations of the silver carbamate precursor. Several AgNPs were agglomerated and caused the formation of micro-particles due to the growth of AgNPs during thermal reduction at a temperature of 120 C. [26][27][28] Small AgNPs were adsorbed on both uncovered fibers and larger aggregated particles (Figures 3(i) and (j)). The shapes of AgNPs are irregular, but thiol-modified cotton fiber can effectively absorb silver atoms via simple heating by silver 2ethylhexylcarbamate.…”