The Antibacterial Activities of Polyurethane mixed with Nanosilver against Opportunistic Gram–negative Bacteria
Abstract
The objectives of this research were to study the antibacterial activities of polyurethane mixed with nanosilver, which had been prepared with 5 different silver concentrations (40, 100, 200, 500, and 1000 ppm). The polyurethane mixed with nanosilver were tested against opportunistic gram–negative bacterium, Escherischia coli ATCC25913, Drug–resistant and non–resistant Pseudomonas aeruginosa and Proteus mirabilis, by Agar Disc Diffusion Susceptibility Testand Broth dilution Susceptibility Test. The results were shown that polyurethane mixed with nanosilver inhibited the growth of opportunistic gram–negative bacteria, with the MICs of 100 – 1000 ppm. Also, polyurethane mixed with 1000 pmm nanosilver showedthe highest antibacterial activity against P. aeruginosa at 86.70% of inhibition.
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