Novel (semi-)conducting nanocomposites: Experimental and theoretical approach

Niko Van Den Brande, Nicolaas-Alexander Gotzen, Guy Van Assche, Gregory Van Lier, Cornelis Koning, Paul Geerlings, Bruno Van Mele

Research output: Chapter in Book/Report/Conference proceedingMeeting abstract (Book)

Abstract

To achieve good (conductive) qualities in nanocomposites, carbon nanotubes (NTs) must form a percolating network in the polymer matrix, which requires they are dispersed well. In order to achieve this, specialised and complex techniques are often required, such as latex technology, where surfactants are used to form aqueous polymer and nanotube emulsions, which are subsequently mixed, freeze-dried and compression-molded. Recently however, polydimethylsiloxane (PDMS) was shown to readily disperse carbon nanotubes after mere mechanical mixing.
In this work, the properties of PDMS and especially polymethylphenylsiloxane (PMPS) nanocomposites are examined. As lowering the amount of filler that results in percolation is an important goal, the application of the double percolation concept on blends of PMPS with polystyrene (PS) was also studied. For this research, experimental techniques such as modulated temperature differential scanning calorimetry (MTDSC), rheometry, conductivity measurements and scanning electron microscopy (SEM) were supplemented with theoretical semi-empirical AM1 calculations.
Original languageEnglish
Title of host publication10th flemish youth conference of chemistry
Publication statusPublished - 1 Mar 2010

Keywords

  • Carbon Nanotubes
  • Nanocomposites
  • Conductivity

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