Effect of ionic liquid on dielectric, mechanical and dynamic mechanical properties of multi-walled carbon nanotubes/polychloroprene rubber composites

Kalaivani Subramaniam, Amit Das, Dagmar Steinhauser, Manfred Klüppel, Gert Heinrich

    Research output: Contribution to journalArticleScientificpeer-review

    96 Citations (Scopus)

    Abstract

    This paper focuses on the influence of ionic liquid on carbon nanotube based elastomeric composites. Multi-walled carbon nanotubes (MWCNTs) are modified using an ionic liquid at room temperature, 1-butyl 3-methyl imidazolium bis (trifluoromethylsulphonyl) imide (BMI) and modified MWCNTs exhibit physical (cation-π/π-π) interaction with BMI. The polychloroprene rubber (CR) composites are prepared using unmodified and BMI modified MWCNTs. The presence of BMI not only increases the alternating current (AC) electrical conductivity and polarisability of the composites but also improves the state of dispersion of the tubes as observed from dielectric spectroscopy and transmission electron microscopy respectively. In addition to the hydrodynamic reinforcement, the formation of improved filler-filler networks is reflected in the dynamic storage modulus (E′) for modified MWCNTs/CR composites in amplitude sweep measurement upon increasing the proportion of BMI. Hardness and mechanical properties are also studied for the composites as a function of BMI.

    Original languageEnglish
    Pages (from-to)2234-2243
    Number of pages10
    JournalEuropean Polymer Jounal
    Volume47
    Issue number12
    DOIs
    Publication statusPublished - Dec 2011
    Publication typeA1 Journal article-refereed

    Keywords

    • Carbon nanotubes
    • Electrical conductivity
    • Ionic liquids
    • Polychloroprene rubber

    ASJC Scopus subject areas

    • Polymers and Plastics
    • General Physics and Astronomy
    • Organic Chemistry

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