Nanotech 2010

Synthesis of Soluble Inorganic Oxide Nanoparticles and Organic-Inorganic Nanocomposites

H.-S. Ryang
APS Laboratory, US

Keywords: soluble inorganic oxide nanoparticles, nanocomposites

Abstract:

This paper presents a novel wet method of preparing soluble inorganic oxide (such as SiO2, Al2O3, TiO2, ZrO2) sols and organic-inorganic nanocomposites therefrom. The subject sols were successfully prepared by controlled hydrolysis/condensation of oxide precursors in the presence of organo-functional silanes so as to prevent gel formation during the reaction. The resulting sols can be isolated as dry powders that can be stored for a long period of time without gelation. It was also found that these sols can host metal (such as Au and Ag) and metal chalcogenide (such as CdS and CdSe) to generate stable host-guest nanocomposite sols. The sols are highly soluble in various common solvents and can be readily incorporated into various resin systems including epoxy, acrylate, polyurethane, silicone, polyimide, and polyamideimide resins to generate optically transparent organic-inorganic nanocomposites.
 
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