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http://dx.doi.org/10.7317/pk.2012.36.5.656

Fabrication of Hybrid Nanocomposites of PAA-grafted Graphene and Pd Nanoparticles having POSS (Pd-POSS)  

Lim, Jung-Hyurk (Department of Polymer Science and Engineering, Korea National University of Transportation)
Ko, Yl-Woong (Department of Polymer Science and Engineering, Korea National University of Transportation)
Kim, Ki-Young (Department of Textile Convergence of Biotechnology & Nanotechnology, Korea Institute of Industrial Technology)
Kim, Kyung-Min (Department of Polymer Science and Engineering, Korea National University of Transportation)
Publication Information
Polymer(Korea) / v.36, no.5, 2012 , pp. 656-661 More about this Journal
Abstract
The palladium nanoparticles were self-assembled to make Pd-POSS using POSS-$NH_3{^+}$ (polyhedral oligomeric silsesquioxane) as a crosslinker. Graphene oxide (GO) was produced by the reaction of graphite under a strong acid and oxidizer and poly(acrylic acid) (PAA) was covalently grafted on the surface of graphene to make PAA-grafted graphene through the radical polymerization of acrylic acid and GO along with a reduction process under $NaBH_4$. The nanocomposites of Pd-POSS and PAA-grafted graphene were fabricated via ionic interactions between positively charged Pd-POSS and negatively charged PAA-grafted graphene. Pd-POSS nanoparticles were attached to the surface of PAA-grafted graphene through ionic interactions. The thermal stability of Pd-POSS/PAA-grafted graphene was higher than that of PAA and PAA-grafted graphene. The composition, structure, surface morphology, and thermal stability of the Pd-POSS/PAA-grafted graphene were studied by FE-SEM, AFM, TEM, FTIR, and TGA.
Keywords
graphene oxide; polyhedral oligomeric silsesquioxane (POSS); ionic interactions; hybrid nanocomposites;
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