Abstract
Nanostructured silver films of different thicknesses were deposited on surfaces of polypropylene nonwovens by magnetron sputter coating to obtain antibacterial and electrical conductive properties. The surface morphology of nanostructured silver films was investigated by atomic force microscopy (AFM). The antibacterial properties of the nonwovens coated with relatively thinner films were evaluated using the shake flask test. The conductivity of the nonwovens coated with relatively thicker films was examined using an ohm-meter. The results of the antibacterial test revealed that the antibacterial performance improved gradually as the film thickness increased from 0.5 to 3 nm. It is believed that the total amount of silver ions released from the coating was increased along with the increase in film thickness. As sputtering time prolonged, the grain sizes of the silver particles were increased and the coating became more compact. The results of the electrical conductivity test showed that the increased film thickness led to the improved electrical conductivity when the film was relatively thicker. The AFM images clearly revealed the change in surface morphology formed by sputter coating. The growth and coverage of the coating layer contributed to the improvement in its antibacterial and conductive properties.
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Acknowledgments
The research was supported by the Key Project of Chinese Ministry of Education (No. 106089) and Southern Yangtze University (No. 2005LYY014).
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Wang, H., Wang, J., Hong, J. et al. Preparation and characterization of silver nanocomposite textile. J Coat Technol Res 4, 101–106 (2007). https://doi.org/10.1007/s11998-007-9001-8
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DOI: https://doi.org/10.1007/s11998-007-9001-8