investigation of the strain sensing performance of pp/epdm/cnt nanocomposites

Conductive thermoplastic elastomer composites based on pp/epdm/cnt were prepared at the melt state using different cnt contents. the strain-sensor behavior of the system was evaluated around the electrical percolation threshold (5 wt.% of cnt in 40:60 pp/epdm blend). it was shown that the conductivity of the studied system has enough sensitivity to the strain in the range of 50 % strain. also, the results interestingly showed that variation of the electrical conductivity, during loading and unloading of strain (50 cycles), remained almost constant. the prepared sensors had high flexibility and stretchability, which make them applicable in industrial sensors.