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http://dx.doi.org/10.5012/bkcs.2012.33.2.483

Facile Preparation of Nanosilver-decorated MWNTs Using Silver Carbamate Complex and Their Polymer Composites  

Park, Heon-Soo (Department of Nanobiomedical Science & WCU Research Center, Dankook University Graduate School)
Gong, Myoung-Seon (Department of Nanobiomedical Science & WCU Research Center, Dankook University Graduate School)
Publication Information
Bulletin of the Korean Chemical Society / v.33, no.2, 2012 , pp. 483-488 More about this Journal
Abstract
We successfully decorated multi-wall carbon nanotubes (MWNTs) with silver by reacting Ag-NPs with thiolfunctionalized MWNT-SH. Ag alkylcarbamate complex was used as an Ag precursor. Uniform Ag-NPs (5-10 nm) were effectively prepared by microwaving within 60 s using 1-amino-4-methylpiperazine (AMP), which acts as a reaction medium, reducing agent, and stabilizer. The MWNTs were functionalized with 2-aminoethanethiol. Exploiting the chemical affinity between thiol and Ag-NPs, Ag-MWNT nanohybrids were obtained by spontaneous chemical adsorption of MWNT-SH to Ag through Ag-S bonds. The Ag-S-MWNTs were characterized by TGA, XRD, and TEM to confirm that Ag-NPs were uniformly decorated onto the MWNTs. The Ag-S-MWNTs were then employed as conducting filler in epoxy resin to fabricate electrically conducting polymer composites. The electrical properties of the composites were measured and compared with that containing MWNT-SH. The electrical conductivity of composites containing 0.4 wt % Ag-S-MWNT was four orders of magnitude higher than those containing same content of MWNT-SH, confirming Ag-S-MWNT as an effective conducting filler.
Keywords
Ag-NPs; 1-Amino-4-methylpiperazine; Silver alkylcarbamate; Microwave; Ag-MWNTs/epoxy composites;
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Times Cited By Web Of Science : 1  (Related Records In Web of Science)
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