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Synergistic Effect of PVP and PEG on the Behavior of Silver Nanoparticle-Polymer Composites

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Silver nanoparticles-polymer nanocomposites, Ag-(1–x)PVP-(x)PEG, were synthesized by wet chemical method in the presence of polyvinylpyrrolidone (PVP) and polyethylene glycol (PEG). A mixture of two stabilizing agent PVP and PEG is found to play a crucial role in controlling the morphology of nanocrystalline silver particles in the composite. This is inferred based on the shape and size study of nanocrystalline silver using the X-ray diffraction, transmission electron microscopy, Uv-vis spectroscopy, FTIR, and surface enhance Raman studies. These results suggest asymmetrical growth of silver nanocrystalline particles in the presence of both PVP and PEG. Comparison of the thermal properties of the Ag-polymer nanocomposites with pure polymers, PVP and PEG, showed that the thermal stability of the nanocomposite deteriorates by as much as 75 °C in the presence of low PEG concentration (x ≤ 0.6) and improves by around 45 °C at higher PEG concentration (x > 0.6). The study highlight the fact that the morphology of nanocrystalline silver can be altered just by varying the polymer weight ratios rather than any processing parameters, thus offering a novel, simple, and controlled synthesis engineering route to the formation of nanocrystalline silver in polymer matrix.
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Document Type: Research Article

Publication date: August 1, 2012

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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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