TUTCRIS - Tampereen teknillinen yliopisto

TUTCRIS

Influence of ionic liquids on the dielectric relaxation behavior of CNT based elastomer nanocomposites

Tutkimustuotosvertaisarvioitu

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut927-936
Sivumäärä10
JulkaisuExpress Polymer Letters
Vuosikerta6
Numero11
DOI - pysyväislinkit
TilaJulkaistu - marraskuuta 2012
OKM-julkaisutyyppiA1 Alkuperäisartikkeli

Tiivistelmä

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.