In this research, a new generation of ternary nanocomposites based on poly(ethylene terephthalate) (PET), phosphorylated chitosan and surface modified alumina nanoparticles were fabricated in four steps. The phosphorylation process was targeted for the insertion of phosphorus moieties as a flame retardant agent in the final PET nanocomposite. Likewise, environmentally friendly nano-alumina was used for PET matrix to improve the thermal properties of PET in collaboration with organic anchored phosphorus moieties. Alternatively, the presence of bio-safe modified alumina nanoparticles in combination with phosphorylated chitosan simultaneously improved the antibacterial activity and thermal properties of the PET matrix. Furthermore, the effects of the phosphorylated chitosan and alumina nanoparticles on the morphology and thermal properties of nanocomposites were inspected by different approaches. The structure and distribution of the nanoscale particles in PET were analyzed by scanning electron microscopy. In addition, differential scanning calorimetry and thermogravimetric analyses were used for the in-depth evaluation of the thermal properties of prepared nanocomposites. Prepared nanocomposites showed better growth inhibition activities against Escherichia coli bacteria compared to the PET and PET/phosphorylated chitosan samples. Also, the thermal characteristics of prepared nanocomposites were considerably improved.

在这项研究中，基于聚对苯二甲酸乙二醇酯 (PET)、磷酸化壳聚糖和表面改性氧化铝纳米粒子的新一代三元纳米复合材料分四步制备。磷酸化过程的目标是在最终的 PET 纳米复合材料中插入磷部分作为阻燃剂。同样，环保的纳米氧化铝被用于 PET 基质，与有机锚定磷部分合作改善 PET 的热性能。或者，生物安全的改性氧化铝纳米颗粒与磷酸化壳聚糖的存在同时提高了 PET 基质的抗菌活性和热性能。此外，通过不同的方法检查了磷酸化壳聚糖和氧化铝纳米颗粒对纳米复合材料的形貌和热性能的影响。通过扫描电子显微镜分析PET中纳米级颗粒的结构和分布。此外，差示扫描量热法和热重分析用于深入评估制备的纳米复合材料的热性能。与 PET 和 PET/磷酸化壳聚糖样品相比，制备的纳米复合材料对大肠杆菌具有更好的生长抑制活性。此外，制备的纳米复合材料的热特性也得到了显着改善。此外，差示扫描量热法和热重分析用于深入评估制备的纳米复合材料的热性能。与 PET 和 PET/磷酸化壳聚糖样品相比，制备的纳米复合材料对大肠杆菌具有更好的生长抑制活性。此外，制备的纳米复合材料的热特性也得到了显着改善。此外，差示扫描量热法和热重分析用于深入评估制备的纳米复合材料的热性能。与 PET 和 PET/磷酸化壳聚糖样品相比，制备的纳米复合材料对大肠杆菌具有更好的生长抑制活性。此外，制备的纳米复合材料的热特性也得到了显着改善。