National Taiwan University

Yueh-Hsien Wu

Jiang-Jen Lin

Wei-Cheng Tsai

Wei-Li Lin

Chao-Po Hsu

Rui-Xuan Dong

Hui-Fen Lin

The present invention provides a method for producing silver nanoparticles by employing ethanolamine. The method of this invention can be easily operated and no organic solvent is required. Ethanolamine first reacts with copolymers of poly(styrene-co-maleic anhydride) (abbreviated as SMA) to generate polymeric polymers. The polymeric polymers then reduce silver ions to silver atoms which are dispersed in the form of silver nanoparticles. Functional groups of the polymeric polymers can chelate with silver ions and be stably compatible with water or organic solvents, whereby the silver nanoparticles can be stably dispersed without aggregation and the produced silver nanoparticles.

Method for preparing silver nanoparticles by employing ethanolamine and poly(styrene-co-maleic anhydride) copolymers

The present invention provides a method for producing silver nanoparticles by employing ethanolamine. The method of this invention can be easily operated and no organic solvent is required. Ethanolamine first reacts with a mixture of poly(oxyalkylene)-amine/epoxy or copolymers of poly(styrene-co-maleic anhydride) (abbreviated as SMA) to generate polymeric polymers. The polymeric polymers then reduce silver ions to silver atoms which are dispersed in the form of silver nanoparticles. Functional groups of the polymeric polymers can chelate with silver ions and be stably compatible with water or organic solvents, whereby the silver nanoparticles can be stably dispersed without aggregation and the produced silver nanoparticles.

Method for preparing silver nanoparticles by employing ethanolamine

The present invention provides an oil-dispersible composite of metallic nanoparticles and a method for synthesizing the same. The composite primarily includes metallic nanoparticles and an oily polymeric polymer such as polyurethane (PU). The oily polymeric polymer serves as a carrier of the metallic nanoparticles by chelating therewith so that the metallic nanoparticles are dispersed uniformly. In the method of the present invention, the metallic ions are first chelated by the oily polymeric polymer and then reduced into nanoparticles. The composite of the present invention is about 5 to 100 nm in particle size.

Oil-dispersible composite of metallic nanoparticle and method for synthesizing same

A method for producing a complex of metallic nanoparticles and inorganic clay and an organic promoter, wherein the organic promoter is ethanolamine, for example, monoethanolamine (MEA), diethanolamine (DEA) or triethanolamine (TEA). The metallic nanoparticles produced by this method can be stably and uniformly dispersed without adding other reducing agent or dispersant.

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Taipei, Taiwan

Yueh-Hsien Wu