Thermoplastic starch (TPS) composites incorporating bentonite/cellulose (Bent/Cellulose) hybrid fillers in different ratios were prepared by film casting. Ultra‐sonication was done to promote good dispersion of filler in the host TPS and enhance the filler‐matrix interactions. Ultra‐sonicated fillers resulted in superior improvement in the tensile properties when the samples preconditioned at both ambient and 2°C. Upon preconditioning at 2°C, the TPS composite containing the ultra‐sonicated hybrid bent/cellulose in 80:20 ratio displayed the greatest tensile properties achievement among all the tested materials. These could be due to the effect of low temperature interactions between the starch, plasticizers, and the hybrid fillers. Differential scanning calorimetry analysis proved the changes in the crystallinity and dynamic characteristic of the TPS molecular chains which benefit in enhancing the biopolymer elongation at break and toughness, even when stored at refrigerated condition. In summary, the TPS/bent/cellulose composite has potential to be further developed for refrigerated food packaging application. POLYM. ENG. SCI., 60:810–822, 2020. © 2020 Society of Plastics Engineers

中文翻译：

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纤维素/膨润土杂化填料对热塑性淀粉复合材料的结构，环境和低温拉伸性能的影响

通过薄膜流延制备以不同比例掺入膨润土/纤维素（Bent /纤维素）杂化填料的热塑性淀粉（TPS）复合材料。进行超声处理可促进填料在主机TPS中的良好分散，并增强填料与基质的相互作用。当样品在环境温度和2°C下进行预处理时，超声处理的填料可显着改善拉伸性能。在2°C下进行预处理后，TPS复合材料以80:20的比例包含超声混合的弯曲/纤维素混合物，在所有测试材料中均表现出最大的拉伸性能。这些可能是由于淀粉，增塑剂和杂化填料之间的低温相互作用所致。差示扫描量热分析证明，即使在冷藏条件下，TPS分子链的结晶度和动态特性也会发生变化，这有助于提高生物聚合物的断裂伸长率和韧性。总而言之，TPS /弯曲/纤维素复合材料有潜力进一步发展为冷藏食品包装应用。POLYM。ENG。SCI。，60：810–822，2020.©2020塑料工程师协会