فهرست نشریات علمی دسترسی آزاد ایران

In order to ensure better elastomer/functionalized Multi-Walled Carbon Nanotube (MWCNT) compatibility and to enhance the dispersion, a series of ionic liquids has been tested in regard to an improved interaction between elastomer and functionalized carbon nanotubes. We found that in the presence of especially one ionic liquid, namely, 1-butyl-1-methylpyrrolidinium tetra uoroborate, for the hydrogenated nitrile elastomer, used as basic polymer, a 1.83 fold increase of elongation at break was achieved with only  7 wt% ionic liquid loading. At this low concentration of ionic liquid the sample can be stretched up to 508% without mechanical failure. The use of this ionic liquid additionally results in high tensile strength (21.4 MPa) at low concentration (< 7 wt %) of ionic liquid. Energy-dispersive X-ray spectrometric scanning electron microscopy conrmed the homogeneous distribution of ionic liquids among nitrile elastomer chains by showing uniform signal belonging to uorine in ionic liquid, when the diffusion process of ionic liquid into nanocomposites was long enough (> 48 h) during the ionic liquid absorption measurements. Transmission electron microscopic images confirmed the good dispersion of the MWCNT along with the exfoliated structure of the CNTs in the rubber matrix.