Investigation on Durability of Copper Nano Particles on Cotton Fiber

Abstract

In recent years, metal nano particles such as silver, copper and zinc have developed in textile<br />finishing. Copper nano particles are used in wound dressings and socks to give them antibacterial<br />properties. In the present paper, cotton fabrics were treated with different concentrations of Cu nano<br />particles colloidal solution. For investigation of the durability of nano particles on cotton fabric,<br />laundering test was carried out. Antibacterial activity, wetting time, bending length, crease recovery<br />angle and whiteness were investigated. Cu ions contents on cotton fabric were determined using<br />atomic absorption spectroscopy and the chemical bonding was detected using the FTIR/ATR<br />spectroscopy. The scanning electron microcopy was used for surface morphology studies. The<br />results showed that increase of copper nano particles concentration increased antibacterial activity,<br />and after repeated laundering, some of copper nano particles were removed from the fabric so that<br />bacteria reduction reached to 92 %. Whiteness decreased by Cu nano particles coating. Increase of<br />copper nano particles concentration increased crease recovery angle, bending length, wetting time.<br />Atomic absorption analysis showed the decrease of copper ion content after repeated laundering.<br /><br />