Department of Food Science and Technology, Faculty of Agriculture, University of Zanjan, Zanjan, 45371-38791, Iran.
Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan, 45371-38791, Iran.
Environ Sci Pollut Res Int. 2023 Jan;30(2):2740-2753. doi: 10.1007/s11356-022-22049-1. Epub 2022 Aug 8.
In this research, a biodegradable starch/FeO/TiO bio-nanocomposites (SFT) were produced using different nano FeO/TiO (FT) (3, 5, and 10 (wt% dry based)) contents. Mechanical properties, visual properties, moisture-sensitive parameters, magnetic properties, and physical properties of the film specimens were investigated. Photodegradability of film specimens was also evaluated under UV-A irradiation. The FT content increased the hydrophobicity of the film specimens. Tensile strength (TS) of SFT films was increased by increasing FT up to 3%. Elongation at break (EB) and tensile energy to break (TEB) were decreased by adding FT content up to 3% simultaneously. The film specimens' water vapor permeability (WVP) was decreased with increasing FT content. The intrinsic viscosity of SFT was decreased by increasing FT content. It confirms the enhancement of photodegradability of the specimens by increasing FT content. It seems the compatibility of FT with biopolymer has had great effects on these properties. Use of FT-based nanocomposites is an appropriate approach to developing magnetic-recyclable and photodegradable packaging materials.
在这项研究中，使用不同纳米 FeO/TiO（FT）（3、5 和 10（基于干重的重量%））含量制备了可生物降解的淀粉/FeO/TiO 生物纳米复合材料（SFT）。研究了薄膜样品的力学性能、外观性能、吸湿参数、磁性和物理性能。还在 UV-A 照射下评估了薄膜样品的光降解性。FT 含量的增加提高了薄膜样品的疏水性。随着 FT 含量的增加，SFT 薄膜的拉伸强度（TS）增加，而断裂伸长率（EB）和断裂拉伸能（TEB）同时降低。随着 FT 含量的增加，薄膜样品的水蒸气透过率（WVP）降低。SFT 的特性粘度随着 FT 含量的增加而降低。这证实了通过增加 FT 含量可以提高样品的光降解性。似乎 FT 与生物聚合物的相容性对这些性能有很大影响。使用基于 FT 的纳米复合材料是开发可磁回收和光降解包装材料的一种合适方法。
