Jump to main content
Jump to site search


Highly stretchable conductive thermoplastic vulcanizate/carbon nanotube nanocomposites with segregated structure, low percolation threshold and improved cyclic electromechanical performance

Abstract

We investigated electrically conductive nanocomposites made of thermoplastic vulcanizate (TPV) and multiwalled carbon nanotubes (CNT) that exhibit highly enhanced stretchability, low electrical percolation threshold, and improved electromechanical durability after cyclic loading. The TPV/CNT nanocomposites were fabricated by compounding the pre-vulcanized rubber (PVR) fine particles with the maleic anhydride grafted polyethylene (MA-g-PE)/CNT compound. Our microstructural and morphological investigations showed that using PVR particles, rather than their more common virgin elastomer counterparts, locked the carbon nanotubes in the MA-g-PE phase. This guaranteed the formation of a segregated structure. Furthermore, it was confirmed that the chemical bonding forms between the PVR particles and the MA-g-PE matrix produced an excellent interfacial adhesion between the two phases. This engineered structure increased the TPV/CNT nanocomposites’ stretchability by 300%. Meanwhile their electrical percolation threshold was decreased by ~50%, when compared with their MA-g-PE/CNT counterparts. Interestingly, the cyclic electromechanical properties were also improved, suggesting the nanocomposites’ great potential for flexible and stretchable electromechanical applications. The mechanisms linking the microstructure and their consequent characteristics were also discussed. Such property combinations can be extremely beneficial in flexible electronics, soft robotics, and health monitoring devices.

Back to tab navigation

Publication details

The article was received on 02 Oct 2017, accepted on 28 Nov 2017 and first published on 28 Nov 2017


Article type: Paper
DOI: 10.1039/C7TC04501H
Citation: J. Mater. Chem. C, 2017, Accepted Manuscript
  •   Request permissions

    Highly stretchable conductive thermoplastic vulcanizate/carbon nanotube nanocomposites with segregated structure, low percolation threshold and improved cyclic electromechanical performance

    Y. Kazemi, A. Ramezani Kakroodi, A. Ameli, T. Filleter and C. B. Park, J. Mater. Chem. C, 2017, Accepted Manuscript , DOI: 10.1039/C7TC04501H

Search articles by author

Spotlight

Advertisements