Poly(butylene adipate-co-terephthalate) (PBAT) nanocomposite films with various contents of nano-titanium dioxide (TiO₂) and titanium dioxide doped silver (Ag-TiO₂) were prepared by a solvent casting method. The TiO₂ and Ag-TiO₂ nanoparticles were surface-modified with silane coupling agents to improve their compatibility and dispersibility in the PBAT matrix. They were denoted as mTiO₂ and mAg-TiO₂, and were characrterized by Fourier transform infrared (FTIR) spectroscopy and transmission electron microscopy (TEM). The morphology of the PBAT nanocomposite films was studied by field emission scanning electron microscopy (FE-SEM). The crystallinity of the PBAT film increased upon the introduction of the nano-TiO₂/Ag-TiO₂. Its mechanical properties and gas barrier properties were also significantly improved. In addition, the PBAT/mTiO₂ and PBAT/mAg-TiO₂ nanocomposite films showed a strong antibacterial activity against Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) food-borne pathogenic bacteria.

通过溶剂流延法制备了不同含量的纳米二氧化钛（TiO ₂）和掺杂二氧化钛的银（Ag-TiO ₂）的聚己二酸丁二醇酯-对苯二甲酸对苯二甲酸酯（PBAT）纳米复合膜。TiO ₂和Ag-TiO ₂纳米颗粒用硅烷偶联剂进行了表面改性，以提高它们在PBAT基质中的相容性和分散性。它们分别表示为mTiO ₂和mAg-TiO ₂，并通过傅里叶变换红外（FTIR）光谱和透射电子显微镜（TEM）进行了表征。通过场发射扫描电子显微镜（FE-SEM）研究了PBAT纳米复合膜的形貌。引入纳米TiO ₂ / Ag-TiO ₂后，PBAT膜的结晶度增加。其机械性能和气体阻隔性能也得到显着改善。此外，PBAT / mTiO ₂和PBAT / MAG-TIO _2层纳米复合材料膜表现出对革兰氏阴性（很强的抗菌活性大肠杆菌）和革兰氏阳性（金黄色葡萄球菌）食源性致病菌。