采用熔融共混法制备了聚碳酸亚丙酯(PPC)和聚羟基丁酸戊酸酯(PHBv)的共混物,采用DSC、电子拉伸机、扫描电镜等手段系统研究了共混物配比对体系热性能、力学性能、界面形貌的影响。采用套管上吹法将共混物吹塑成膜。DSC结果显示共混物为部分相容体系。扫描电镜照片显示PHBv分散相均匀分散在PPC基体中。共混物薄膜的力学性能较PPC有大幅增强。纯PPC吹膜性能不稳定,力学性能和耐热性能差,而PPC/PHBv共混物吹膜性能稳定,可以获得力学性能和耐热性能较好的膜材料,在包装、生物医用材料等领域具有广阔的应用前景。 The blends of poly (propylene carbonate) (PPC) and poly (hydroxybutyrate) valerate (PHBv) were prepared by melt blending method. The blends were prepared by DSC, electronic stretching and scanning electron microscopy Than on the system thermal properties, mechanical properties, the impact of interface morphology. The blend was blown into a film using a sleeve up-blow method. DSC results show that the blend is a partially compatible system. Scanning electron micrographs show that the PHBv disperse phase is uniformly dispersed in the PPC matrix. The mechanical properties of the blend films are greatly enhanced compared to PPC. Pure PPC blown film performance instability, poor mechanical properties and heat resistance, and PPC / PHBv blend blown film performance is stable, can get better mechanical properties and heat resistance of membrane materials, packaging, biomedical materials and other fields have a broad vision of application.