Influence of ionic liquids on the dielectric relaxation behavior of CNT based elastomer nanocomposites
Research output: Contribution to journal › Article › Scientific › peer-review
|Number of pages||10|
|Journal||Express Polymer Letters|
|Publication status||Published - Nov 2012|
|Publication type||A1 Journal article-refereed|
The influence of an imidazolium type ionic liquid (IL) on the relaxation behavior of carbon-nanotube (CNT) based polychloroprene nanocomposites prepared by melt mixing has been investigated by broadband dielectric spectroscopy. It is demonstrated that the presence of the ionic liquid modifies the relaxation behavior of the pure rubber matrix and leads to a significant increase of the conductivity for the CNT/rubber composites. For the unfilled rubber, a distinct glass transition of the IL is observed for high concentrations demonstrating that the IL forms a separate phase. The increased conductivity of the CNT-filled rubber composites is related to a physical coupling between CNTs and rubber matrix mediated by IL leading to a better dispersion of the CNTs.