Investigations on sputter-coated cotton fabric with regard to their microstructure, antibacterial, hydrophobic properties and thermal stability

摘要

TiON and TiON/Cu films were RF-sputtered on cotton surface under a mixed atmosphere of Ar/N-2/O-2. An amorphous-like structure with broadened peaks was formed in the TiON film when TiON/Cu films became crystalline with an increase in Cu contents. The deposited TiON/Cu films showed anatase TiO2 phase. TiON-coated cotton fabrics were about 90% efficacious in bacterial reduction. A sharp increase in bacterial cell reduction was observed when Cu was added to the TiON film. In addition, the contact angle of the coated cotton fabrics was higher than that of the uncoated samples. However, the contact angle of the TiON/Cu-coated cotton fabrics with different Cu contents ranged between 115 degrees and 130 degrees. TGA analysis indicated that TiON and TiON/Cu films had no negative effect on thermal stability of the cotton fabric.