Abstract In this study, pure potato starch (PPS) was purified from waste potato residual to fabricate cross-linked bilayer materials with the casting method. Malonic acid (MA) was employed to get cross-linked material from PPS as PPS-MA. Then polylactic acid (PLA) was also implemented onto PPS and PPS-MA to produce bilayer materials as PPS-PLA and PPS-MA-PLA. The obtained these bilayer films were characterized by FTIR, XRD, and TGA. The mechanical and physical applications such as water vapor permeability, water uptake, moisture content, solubility, and opacity were investigated. The biodegradation calculations were also done by the process of composting. It has demonstrated that each application onto PPS increased the mechanical features. However, elongation wasn’t seen during the breaking test of PPS and PPS-MA films, whereas the PPS-PLA and PPS-MA-PLA films demonstrated 9.34% and 10.14% elongation at break that substantiates the structural durability against rupture, fragmentation, and feeble. Furthermore, the water vapor permeability, water uptake, moisture content, and solubility decreased but the opacity has increased.

中文翻译：

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从交联淀粉制备双层聚乳酸薄膜作为生态友好的可生物降解材料：合成、表征、机械和物理性能

摘要 本研究从废马铃薯残渣中提纯纯马铃薯淀粉（PPS），采用浇铸法制备交联双层材料。丙二酸 (MA) 被用来从 PPS 中得到交联材料作为 PPS-MA。然后聚乳酸 (PLA) 也被应用到 PPS 和 PPS-MA 上以生产双层材料，如 PPS-PLA 和 PPS-MA-PLA。获得的这些双层薄膜通过 FTIR、XRD 和 TGA 进行表征。研究了机械和物理应用，例如水蒸气渗透性、吸水率、水分含量、溶解性和不透明度。生物降解计算也通过堆肥过程进行。已经证明，每次在 PPS 上的应用都增加了机械特性。然而，在PPS和PPS-MA薄膜的断裂试验中没有看到伸长率，而 PPS-PLA 和 PPS-MA-PLA 薄膜表现出 9.34% 和 10.14% 的断裂伸长率，证实了结构对破裂、碎裂和脆弱的耐久性。此外，水蒸气渗透率、吸水率、水分含量和溶解度降低，但不透明度增加。