Differential scanning calorimetry analysis (DSC)
The DSC curves of the microcapsules were obtained using a Shimadzu DSC-60 (Shimadzu, Kyoto, Japan). Samples of approximately 2 mg of powder were placed in aluminum sealed pans, under a dynamic synthetic air atmosphere (100 mL min−1) and heated from 30 °C to 300 °C at a heating rate of 10 °C min−1. The DSC equipment was preliminarily calibrated with a standard reference of indium.