In this
investigation, air was used as reactive gas at constant flows of
20 ml/min, 40 ml/min, 60 ml/min. Weight loss of the samples was
continuously recorded during the process. Three replicates of each
TGA experiment were performed. The experiment data could be
directly obtained though TGA Q 500 thermogravimetric analyzer,
and were analyzed using universal analysis software from TA Instruments
and origin 8.0 software.