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Synthesis and Characterization of Hybrid Nanocomposites of Pd Nanoparticles Containing POSS(Pd-POSS) and Poly(acrylic acid) via Ionic Interactions  

Jeon, Jong-Hwan (Department of Polymer Science and Engineering, Chungju National University)
Lim, Jung-Hyurk (Department of Polymer Science and Engineering, Chungju National University)
Chujo, Yoshiki (Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University)
Kim, Kyung-Min (Department of Polymer Science and Engineering, Chungju National University)
Publication Information
Polymer(Korea) / v.33, no.6, 2009 , pp. 615-619 More about this Journal
Abstract
Pd-POSS nanoparticles were produced from the reaction of palladium (II) acetate and octa(3-aminopropyl)octasilsesquioxane octahydrochloride (POSS-${NH_3}^+$) in methanol at room temperature. Pd-POSS nanoparticles with a mean diameter of 60-80 nm were the highly ordered spherical aggregates. In contrast, Pd nanoparticles with a size of 4.0 nm were obtained when POSS-${NH_3}^+$ was not introduced. Pd-POSS/PAA nanocomposites of Pd-POSS nanoparticles and poly(acrylic acid) (PAA) were fabricated by utilizing ionic interactions between positively charged Pd-POSS nanoparticles and negatively charged carboxylate groups of PAA. PAA was used as a cross-linker for the preparation of hybrid nanocomposites with the controlled organized structures of Pd-POSS nanoparticles. That is, the self-organization of Pd-POSS nanoparticles was formed into the shape of continuous lines by using PAA as a cross-linker. The composition, structure, surface morphology, and thermal stability of the Pd-POSS/PAA nanocomposites were studied by FE-SEM, AFM, TEM, FT-IR, and TGA.
Keywords
polyhedral oligomeric silsesquioxane (POSS); poly(acrylic acid); hybrid nanocomposites; Pd nanoparticles;
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