INVESTIGATIONS AND MOLECULAR MODELING OF SOME THERMOPHYSICAL PROPERTIES OF POLYSULFONES

Degradation of commercial polysulfones (PSF) was investigated in air a nd in inert atmosphere (nitrogen) using thermogravimetric (TG) method. It has been found that the degradation of Udel P-1800 PSF is initiate d about 400 degrees C, both in air and in nitrogen. The activation ene rgy of degradation of PSF, (E(a)), has been calculated by the Kissinge r and Ozawa methods. The value of E(a) about 200 kJ . mol(-1) has been found for both air and nitrogen atmosphere. Experimental results conc erning thermal properties of PSF (T-g and T-d,T-1/2) were compared wit h those obtained by the computer modeling technique, and a good agreem ent has been found.