Multi-functional textile design using in-situ Ag NPs incorporation into natural fabric matrix

• Multi-functionalization of natural fabrics was achieved by in-situ synthesis of Ag NPs.
• The Ag NPs were synthesized into the fabric surface by using sodium citrate as reducer for Ag+.
• Accoridng to their surface plasmon resonance, Ag NPs was used to produce colored fabrics with different shades.
• The Ag treated fabrics exhibit good color fastness, antimicrobial action and UV protection.

The multifunctional natural fabrics as colored, antibacterial and UV-protective fabrics were effectively prepared by in-situ incorporation of silver nanoparticles (Ag NPs) into the fabric matrix. Cotton and wool fabrics were used as natural fabrics and trisodium citrate was utilized as reductant for Ag+ and stabilizer for Ag NPs. The formation of Ag NPs in the residual solutions was confirmed by UV/Vis spectra. Ag NPs on fabrics were shown by scanning electron microscopy and their size was in range of 20–90 nm and 70–150 nm for cotton and wool fabrics, respectively. X-ray photoelectron spectroscopy confirmed the stabilization action of citrate. As a result of surface plasmon resonance of Ag NPs, colored fabrics were produced with good fastness properties. Functional properties of treated fabrics indicate that, the in-situ incorporation of Ag NPs into fabric matrix was simultaneously imparted multifunctional properties (colorant, antibacterial action and UV-protection) into natural fabrics concurrently.

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