Electrical behavior of PU/POMA blends

Abstract

The incorporation of conducting polymer into a conventional polymer matrix has received attention because of the possibility of combining the good processability and mechanical performance of the conventional polymer with the electrical and optical properties of conducting polymer. In this work, flexible films of polyurethane (PU) and poly(o-metoxyaniline) (POMA) blends were obtained by casting and investigated using thermally stimulated depolarisation current (TSDC) measurements. Two relaxation peaks were found in the range of -20/spl deg/C to 90/spl deg/C. The first one at T=24/spl deg/C was attributed as /spl alpha/ relaxation associated to the glass transition of PU/POMA blend and the second one located at T=60/spl deg/C can be attributed to space charge.