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Silver/Polyethylene Oxide Nanocomposite: UV-Fabrication, Characterization, and Antibacterial Activity

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Abstract:

In this article, silver-polyethylene oxide (Ag/PEO) biocompatible nanocomposite (BCNC) were successfully green synthesized by mixture containing low MW PEO, silver nitrate and by UV-irradiation at room temperature. The initially broad and asymmetric surface plasmon resonance (SPR) band was narrowed and blue-shifted as the exposure time to UV light was increased. Samples illuminated up to 3 h have an average particle size near 12.0 nm; a decrease to 10.0 nm was observed for longer exposure times up to 24 h. The asymmetric SPR band was due to particle aggregation; higher irradiation times led to a uniform particle distribution within the polymer matrix. The synthesized colloids and thin films have potent antibacterial activity toward gram-negative bacterium Escherichia coli (E. coli), and this activity is completely strong. The concentration of silver leading to a complete inhibition of bacteria growth was revealed as low as at 0.50 μg.ml−1 and found much lower compared to other reports. Thus Ag/PEO BCNC could be suitable to antimicrobial applications and medical devices.

Document Type: Research Article

DOI: https://doi.org/10.1166/jnn.2012.4905

Publication date: 2012-06-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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