It can be seen only melting endotherms of RPET compounds using air cooling, which presented melting temperatures of RPET in the RPET compounds as presented in Fig.1 (a). On the other hand, it can be observed endothermic steps of glass
transition temperatures, exothermic curves of cold crystallization temperatures and melting endotherm of melting
temperatures of RPET in the RPET compounds as shown in Fig.