2.5. Thermal properties
2.5.1. Differential scanning calorimetry (DSC)
Samples of each microcomposite films were placed in alumi-
num pans, hermetically sealed, in the equipment sample
chamber (DSC-2920, TA Instruments), under nitrogen atmosphere,
with a flow of 50 mL min1 and warming rate of
5 8C min1until300 8C,sustainedby5 min.Thecrystalstransition
temperature (Tg) was obtained at the inflection point between the
base lines through the change in the heat capacity of the sample.