The thermal properties of the copolymers were studied using differential scanning calorimetry (DSC). The samples were pretreated by keeping them in a vacuum oven at 45 °C for 24 hours, before being placed in aluminium pans and subjected to heating-cooling-heating cycles in a DSC Q2500 Discovery instrument from TA Instruments. The temperature range used was from -90 to 200 °C, at a heating rate of 10 °C/min. The data obtained were analysed using Trios software. The degree of crystallinity (XC) of the materials was calculated using the formula described in the literature , taking into account that the system is a composite: