Abstract
Tissue equivalent polymeric materials should be electrically conductive like the real tissue. Composites based on polyamide 6/polyethylene filled with two different conductive additives, carbon nanotubes (CNT) and carbon black (CB), were prepared. Electrical conductivity measurements revealed that the PA/PE/CNT composite has been reached to percolation threshold with 3% CNT which is much lower than 16% CB in PA/PE/CB composite. After percolation, the CNT filled composites showed lower electrical conductivity than CB filled ones because of the low tunneling effect in narrow cylindrical CNTs in comparison with spherical CB. However, electrical conductivity of both composites is in the range of semi conductive materials which are suitable for using as a tissue equivalent material. Lower amount and high strength of CNT offered better mechanical properties for the PA/PE/CNT composite.
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