DIELECTRIC METHOD FOR DETECTION OF PHASE-SEPARATION AND ITS KINETICS IN TMPC PS BLENDS/

A new method for the detection of phase separation and its kinetics th rough real-time measurements is presented using the dielectric techniq ue. The kinetics of phase separation were determined for a blend of te tramethyl bisphenol-A polycarbonate TMPC and polystyrene PS at differe nt temperatures. The temperature dependence of the rate constant of ph ase separation was determined. The activation energy of phase separati on process is found to be equal to 46 kcal/mole. In addition, it was p ossible to determine the variation in the composition of the TMPC-rich phase with time. The results obtained were compared with the literatu re data and were found to be in good agreement.