The aim is to study the reactive compatibilization of two immiscible thermoplastic polyesters, namely polycarbonate (PC) and poly (ethylene terephthalate) (PET), by transesterification reactions through melt compounding. For this, a catalyst, which is hydrated samarium acetylacetonate (Sm(acac)₃), is incorporated with concentrations of 0.10, 0.15 and 0.20 phr into the 70PC/30PET mixture.

The characterization of the PC/PET blends by differential scanning calorimetry (DSC) revealed that, the transesterification reactions in the absence of catalyst are undetectable or practically impossible; however, by increasing the catalyst concentration, significant variations are noticed on the thermal properties. These modifications, due to the interfacial reactions between the two phases of the system, were also evidenced by variations in morphological properties observed after the study of atomic force microscopy (AFM).

目的是研究两种不混溶的热塑性聚酯，即聚碳酸酯 (PC) 和聚对苯二甲酸乙二醇酯 (PET)，通过熔融配混的酯交换反应进行反应增容。为此，将水合乙酰丙酮钐 (Sm(acac) ₃ )催化剂以 0.10、0.15 和 0.20 phr 的浓度加入 70PC/30PET 混合物中。

通过差示扫描量热法 (DSC) 对 PC/PET 共混物的表征表明，在没有催化剂的情况下，酯交换反应是不可检测的或几乎不可能的；然而，通过增加催化剂浓度，热性能会发生显着变化。由于系统两相之间的界面反应，这些修改也可以通过原子力显微镜 (AFM) 研究后观察到的形态特性变化来证明。