Abstract：
There is a focus on sustainability when manufacturing materials. Utilizing biobased materials and replacing fossil-based products is the main research focus. Bio-composite materials are applied to packaging, filler coatings, and pharmaceuticals. Here, we used the leaves of the agro-waste plant Albizia lebeck L. to extract cellulose. Chemical treatment causing strong acid hydrolysis successfully extracted the cellulose content from the leaves. The cellulose obtained was then strengthened with polylactic acid to make a biobased film for future applications. Fourier transform spectroscopy, scanning electron microscopy, thermal analysis, particle size analysis, visible UV and elemental analysis were all used to characterize the extracted cellulose. SEM and mechanical property analysis were used to check and describe the quality of the reinforced biofilm. The greatest cellulose yield from this raw material was 50.2%. The crystallinity index and crystallite size (CI 70.3% and CS 11.29 nm) were high in the extracted cellulose. The TG (DTG) curve analysis derivative revealed cellulose particle breakdown was initiated around 305.2°C and can endure temperatures up to 600°C. Biofilms reinforced with polylactic acid cellulose (1, 2, 3, and 5% by weight %) exhibited a smooth and parallel surface. As the filler concentration increased, minor agglomeration occurred. The tensile strength of pure polylactic acid (PLA) (34.72 MPa) was extended up to 38.91 MPa for 5% filler. Similarly, Young\'s modulus also increased to 5.24 MPa. However, the elongation break decreases with the increase of filler content, and the least value of decrease is 7.5 MPa. Concerning prospective implementations, it is expected that the biobased film and cellulose particles will prove to be more functional.
摘要：
制造材料时注重可持续性。利用生物基材料和替代化石基产品是主要的研究重点。生物复合材料应用于包装，填料涂料,和药物。这里,我们用农业废弃物植物AlbizialebeckL.的叶子提取纤维素。导致强酸水解的化学处理成功地从叶子中提取了纤维素含量。然后用聚乳酸强化所获得的纤维素以制备用于未来应用的生物基膜。傅里叶变换光谱学,扫描电子显微镜，热分析,粒度分析,可见UV和元素分析均用于表征提取的纤维素。使用SEM和机械性能分析来检查和描述增强的生物膜的质量。来自该原料的最大纤维素产率为50.2%。在提取的纤维素中结晶度指数和微晶尺寸(CI70.3%和CS11.29nm)高。TG（DTG）曲线分析衍生物显示，纤维素颗粒分解在305.2°C左右开始，并且可以承受高达600°C的温度。用聚乳酸纤维素（1、2、3和5重量％）增强的生物膜显示出光滑且平行的表面。随着填料浓度的增加，发生了轻微的团聚。对于5%填料,纯聚乳酸(PLA)的拉伸强度(34.72MPa)扩展至38.91MPa。同样，杨氏模量也增加到5.24MPa。然而,随着填料含量的增加，断裂伸长率降低，最小下降值为7.5MPa。关于预期的实施，预期生物基膜和纤维素颗粒将被证明是更有功能的。
