Calorimetric measurements were performed on a Netzsch instrument, DSC 214 Polyma. 1-2 mg of the sample was placed in a DSC pan (Concavus Al, 5mm, 30/40 microliter, 600 0 C), and the pan was sealed. Data were collected under nitrogen gas flow with a heating rate of 10 °C /min under a constant nitrogen flow. The maximum temperature for data collection was determined based on the TGA's characteristic decomposition patterns.