DSC, FT-IR, AND ENERGY-DISPERSIVE X-RAY-DIFFRACTION APPLIED TO THE STUDY OF THE GLASS-TRANSITION OF POLY(P-PHENYLENE SULFIDE)

The glass transition of poly(phenylene sulfide) (PPS) has been examine d by differential scanning calorimetry (DSC), Fourier transform infrar ed spectroscopy (FT-IR), and energy dispersive X-ray diffraction (EDXD ) techniques. All of them evidenced the alpha transition of the polyme r, and the results obtained with the different techniques were found t o be consistent when the onset point of the DSC trace is taken. The da ta were analyzed as a function of the rate of heating, and the activat ion energy of the phenomenon was calculated by assaying the theoretica l model of Barton to fit the experimental data.