عنوان مقاله [English]
نویسنده [English]چکیده [English]
The purpose of this study is preparing a conductive tissue equivalent composite similar to expensive and limited access commercial A-150 plastic, by using of conductive carbon nanotubes (CNT) instead of carbon black. Nanocomposites of polyamide/polyethylene (PA/PE) containing 1 to 4% carbon nanotube were made by melt mixing. The electrical conductivity of the composite with 3% CNT reached to 3× 10-6 S/cm which is in the range of semi-conductive materials. SEM and TEM pictures show electrical network formation in continuous PA phase and interface of two phases. In the studies of mechanical properties, a significant increase in the modulus of PA/PE/CNT nanocomposite with 3% CNT was observed. Determination of the density and percentage of elements of this nanocomposite indicated that the obtained values were similar to that declared for muscle tissue and A-150 plastic. Microdosimetry calculations showed that the lineal energy distributions obtained from microdosimeters with a wall of PA/PE/CNT nanocomposite and A-150 are well compatible. Therefore, this composite could be used as a suitable substitute for A-150, as the electrode of the gaseous microdosimeters.