Structural and Bactericidal Properties of Cu-TiO2 Biocides Incorporated in Polypropylene

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Polymer-based appliances are vulnerable to bacterial infections and poses a significant concern in biomedical field. Both Gram-positive and Gram-negative bacteria have been identified as potential sources of infectious diseases, necessitating a comprehensive exploration of innovative materials and strategies to mitigate this issue. Accordingly, this work targeted to determine the effect of 1% and 7% Cu-TiO 2 on the antibacterial activity of PP composite against Staphylococcus aureus ( S. aureus ) and Escherichia coli (E. coli) . In this work, oval-shaped Cu-TiO 2 were fabricated by a hydrothermal method and then incorporated into the PP by internal mixing. Subsequently XRD, TEM, FESEM, and EDS were used to characterize the Cu-TiO 2 -PP composite. The structural properties of PP composite were greatly altered with dispersion of Cu-TiO 2 . Antibacterial tests demonstrated that the bactericidal efficiency of Cu-TiO 2 -PP composite on microorganisms greatly improved with metal-ionic systems compared with pure PP. This work throws some new insight in addressing catheter-related blood-stream infection.

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