The gas barrier properties of poly(butylene adipate-co-terephthalate) (PBAT) films can be improved with poly(propylene carbonate) (PPC), but this will reduce the mechanical properties. In this work, PBAT/PPC composites and the related films were prepared by melt blending followed by film blowing process using triglycidyl isocyanurate (TGIC) as the reactive compatibilizer. Herein, the structure, thermal properties, mechanical properties, and gas barrier properties of the composites were systematically characterized via various techniques. The results indicated that the incorporation of TGIC effectively improved the interfacial compatibility between PBAT and PPC, and enhanced the thermal stability of the composites, especially for PPC. In addition, PBAT/PPC/TGIC films at 1 phr (parts per hundreds of resin) TGIC content exhibited a tensile strength of 30.8 MPa, and an elongation at break of 860%, which are 136% and 142% of those of PBAT/PPC, respectively. Meanwhile, the water vapor transmission rate dropped by 33% at this content. The improvement of mechanics and gas barrier properties makes PBAT/PPC film better meet the requirements of food preservation packaging such as fruits and vegetables.

中文翻译：

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异氰脲酸三缩水甘油酯对聚（己二酸丁二醇酯-共聚对苯二甲酸酯）/聚（碳酸亚丙酯）复合材料的热、机械和气体阻隔性能的影响

聚（己二酸-对苯二甲酸丁二醇酯）（PBAT）薄膜的阻气性能可以用聚（碳酸亚丙酯）（PPC）提高，但这会降低机械性能。在这项工作中，PBAT/PPC 复合材料和相关薄膜是通过熔融共混，然后使用异氰脲酸三缩水甘油酯 (TGIC) 作为反应性增容剂的吹膜工艺制备的。在此，通过各种技术系统地表征了复合材料的结构、热性能、力学性能和阻气性能。结果表明，TGIC的加入有效地提高了PBAT与PPC的界面相容性，增强了复合材料的热稳定性，尤其是PPC的热稳定性。此外，PBAT/PPC/TGIC 薄膜在 1 phr（百份树脂的份数）TGIC 含量下的拉伸强度为 30.8 MPa，断裂伸长率为 860%，分别是 PBAT/PPC 的 136% 和 142% . 同时，在该含量下，水蒸气透过率下降了33%。力学和阻气性能的提高使PBAT/PPC薄膜更好地满足果蔬等食品保鲜包装的要​​求。