During the second heating process of the samples in DSC test, tendencies appear an obvious difference. It can be
clearly observed the double peaks in Fig.2. The peak shape of the sample with same filler is very similar, while it is
very different when the filler is different. Moreover, melting point of all the samples obtained in the second heating
is around 224oC, hence it seems that the content of nano-fillers has no influence on the melting point. The authors