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NOVEL METALLIC AND BIMETALLIC CROSS-LINKED POLY (VINYL ALCOHOL) NANOCOMPOSITES PREPARED UNDER MICROWAVE IRRADIATION
Citation:
VARMA, R. S. AND N. N. MALLIKARJUNA. NOVEL METALLIC AND BIMETALLIC CROSS-LINKED POLY (VINYL ALCOHOL) NANOCOMPOSITES PREPARED UNDER MICROWAVE IRRADIATION. Presented at 233rd ACS National meeting, Chicago, IL, March 25 - 29, 2007.
Impact/Purpose:
To inform the public.
Description:
A facile microwave irradiation approach that results in a cross-linking reaction of poly (vinyl alcohol) (PVA) with metallic and bimetallic systems is described. Nanocomposites of PVA cross-linked metallic systems such as Pt, Cu, and In and bimetallic systems such as Pt-In, Ag-Pt, Pt-Fe, Cu-Pd, Pt-Pd, and Pd-Fe were prepared expeditiously by the reaction of metal salts with 3 wt % PVA under microwave irradiation conditions at a temperature of 100°C, a radical improvement over the literature methods for such cross-linked PVA composites. This general and versatile procedure provides a simple route to assemble useful metallic and bimetallic nanocomposites with varying shapes such as spheres, dendrites, and cubes.