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Study on the Properties of Polystyrene and Styrenic Copolymer Containing Carbon Nanotubes and Nanoclay  

Lee, Kyung Hoon (Department of Chemical Engineering, University of Suwon)
Kim, Young Doo (Department of Chemical Engineering, University of Suwon)
Lee, Minho (Department of Chemical Engineering, University of Suwon)
Min, Byong Hun (Department of Chemical Engineering, University of Suwon)
Kim, Jeong Ho (Department of Chemical Engineering, University of Suwon)
Publication Information
Applied Chemistry for Engineering / v.20, no.5, 2009 , pp. 493-499 More about this Journal
Abstract
The properties of polystyrene and styrenic copolymer nanocomposites containing carbon nanotubes (CNT) and nanoclays were studied. Polystyrene and styrenic copolymer containing styrene and vinylbenzyl trimethylammonium chloride (SVTAC) were synthesized by emulsion polymerization. Polystyrene/CNT/clay and SVTAC/CNT/clay nanocomposites with various concentrations of CNT and different types of clay were prepared via mixing of polystyrene emulsion and clay. SVTAC/CNT nanocomposites showed a better electrical conductivity than PS/CNT nanocomposites. Nanocomposites with more surfactant during polymerization showed a better electrical conductivity than the ones with less surfactant. These indicated the positive effect of comonomer and surfactant on the electrical conductivity. Transmission electron microscopy (TEM) was used to analyze the state of CNT dispersion. TEM results showed that CNT loading, comonomer composition and amount of surfactant affected the final dispersion of CNT in nanocomposites. In order to confirm the effects of CNT loading, comonomer composition and the amount of surfactant on the thermal and dynamic mechanical properties, DSC and DMA analyses were conducted.
Keywords
polystyrene; CNT; clay;
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