Synthesis of polyvinylpyrrolidone and its nanosilver-based polymer composites in supercritical carbon dioxideстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Polyvinylpyrrolidone is synthesized in supercritical carbon dioxide at a pressure of 20 MPa and a temperature of 65A degrees C. Polyvinylpyrrolidone films are impregnated with the organic complex silver 1,5-(cyclooctadiene)-1,1,1,5,5,5-hexafluoroacetyl acetonate, and the metal is subsequently reduced by hydrogen. The chemical structure and structure of nanometallopolymer composites are investigated by SAXS, transmission electron microscopy, FTIR and UV spectroscopy, and X-ray fluorescent analysis. It is shown that the impregnation with the complex and the reduction of the complex give rise to Ag(0) nanoparticles with a predominant size on the order of 1 nm.