Since the inception of research on hollow silica, the use of hollow nanosilica (HNS) as additives in barrier materials has not been reported. In this study, we evaluated the capacity of HNS as an additive in modified polypropylene (MPP). According to X-ray diffraction (XRD), the crystallinity, tensile strength, and thermal stability of MPP/HNS nanocomposite containing 0.1phr HNS approached maximum values. Moreover, the nanocomposite had the best performance in terms of water vapor barrier and oxygen resistance. The reasons for the improvement in barrier performance were discussed. Scanning electron microscopy revealed that HNS at a low content dispersed well in MPP. In conclusion, the synthesized HNS can be used as an additive in barrier materials, and it would have potential applications in the fields of food packaging films and storage containers or materials.

中文翻译：

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中空纳米二氧化硅加入改性聚丙烯制备纳米复合薄膜的新应用

自空心二氧化硅研究开始以来，尚未报道使用空心纳米二氧化硅（HNS）作为阻隔材料的添加剂。在这项研究中，我们评估了 HNS 作为改性聚丙烯 (MPP) 添加剂的能力。根据 X 射线衍射 (XRD)，含 0.1 的 MPP/HNS 纳米复合材料的结晶度、拉伸强度和热稳定性份 HNS 接近最大值。此外，纳米复合材料在水蒸气阻隔性和抗氧性方面具有最佳性能。讨论了阻隔性能提高的原因。扫描电子显微镜显示低含量的 HNS 在 MPP 中分散良好。综上所述，合成的 HNS 可作为阻隔材料的添加剂，在食品包装薄膜和储存容器或材料领域具有潜在的应用前景。