Sonochemical immobilization of silver nanoparticles on porous polypropylene |
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Authors: | Nina Perkas Michael Shuster Galina Amirian Yuri Koltypin Aharon Gedanken |
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Affiliation: | 1. Department of Chemistry and Kanbar Laboratory for Nanomaterials at the Bar‐Ilan University Center for Advanced Materials and Nanotechnology, Bar‐Ilan University, Ramat‐Gan 52900, Israel;2. Carmel Olefins Ltd, P.O.B. 1468, Haifa 31014, Israel |
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Abstract: | Silver nanoparticles were immobilized on the surface of polypropylene (PP) porous beads by an ultrasound‐assisted reduction method. The structure and properties of the silver–PP composite were characterized with XRD, TEM, HRSEM, EDX, XPS, and Raman spectroscopy. Water‐soluble polymers such as PEG, PVA, and PVP were used as stabilizing agents for preventing the agglomeration of the silver nanoparticles. With PVP, a homogeneous distribution of silver nanocrystals, 50 nm in size, on the PP surface was achieved. The mechanism proposed for the silver anchoring to the inert polymer accounts for a localized melting of the PP. The beads of the silver PP composite demonstrated good stability and high antibacterial activity. © 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 46: 1719–1729, 2008 |
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Keywords: | nanocomposites particle size distribution poly(propylene) sonochemical irradiation stabilizing agent |
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