were car- ried out on a STA-449C differential scanning calorime- ter(NETSCH Corporation) under Ar2 purge, at a heating rate of 5 /min from room temperature to 250 ℃ ℃ .
were car- ried out on a STA-449C differential scanning calorime- ter(NETSCH Corporation) under Ar2 purge, at a heating rate of 5 /min from room temperature to 250 ℃℃ .