This study examines the effect of poly(butylene adipate-co-terephthalate) (PBAT) content on the physical, morphological, and mechanical properties of poly(butylene succinate) (PBS)/PBAT foam. A compression molding technique was used to prepare the PBS/PBAT foam using the chemical blowing agent azodicarbonamide and the cross-linking agent dicumyl peroxide. The chemical structure and morphological properties of PBS/PBAT foam were examined via Fourier transform infrared and scanning electron microscopy techniques, respectively, whereas tensile and flexural properties were investigated using a universal testing machine. The results reveal that the incorporation of PBAT barely enhances the viscosity of the PBS/PBAT blend, producing only minor changes in the average cell size of PBS/PBAT foam. However, increasing the PBAT content contributes to a relatively significant improvement in the flexibility and toughness of PBS/PBAT foam, where a decrease in Young’s modulus and tensile strength of the PBS/PBAT foam is observed compared with those of the PBS foam. Similar behavior to the tensile results is noticed for the flexural properties of the neat and PBS/PBAT foams.

中文翻译：

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PBAT 对 PBS/PBAT 泡沫物理、形态和机械性能的影响

本研究检验了聚（己二酸丁二醇酯-共对苯二甲酸酯）（PBAT）含量对聚（丁二酸丁二醇酯）（PBS）/PBAT 泡沫的物理、形态和机械性能的影响。使用化学发泡剂偶氮二甲酰胺和交联剂过氧化二异丙苯，采用压缩成型技术制备 PBS/PBAT 泡沫。PBS/PBAT 泡沫的化学结构和形态特性分别通过傅里叶变换红外和扫描电子显微镜技术进行检测，而拉伸和弯曲特性则使用万能试验机进行研究。结果表明，PBAT 的掺入几乎不会提高 PBS/PBAT 混合物的粘度，仅对 PBS/PBAT 泡沫的平均泡孔尺寸产生很小的变化。然而，增加 PBAT 含量有助于 PBS/PBAT 泡沫的柔韧性和韧性的相对显着改善，与 PBS 泡沫相比，观察到 PBS/PBAT 泡沫的杨氏模量和拉伸强度降低。对于纯泡沫和 PBS/PBAT 泡沫的弯曲性能，观察到与拉伸结果相似的行为。