Specimens of about 5 mg of each sample were prepared in aluminium pans, sealed and heated from 5°C to 200°C and subsequently cooled to -50°C at a linear rate of 10°C min -1 in a N2 atmosphere. This cycle was repeated three times, i.e., heating to 200°C and further cooling to -50°C. In the final cycle, the samples were cooled from 200°C to the room temperature and the glass transition temperature (Tg), melting temperature (Tm) and enthalpy of fusion (ΔHf) were determined. Tg was obtained from the inflection point of the second and third heating cycle and Tm is the onset of the endothermic curve in the first heating. ΔHf was calculated by determination of the area bounded by the endotherm normalized to the mass of the polymer samples. The thermograms were evaluated using Origin software.