This study aims to understand how ulexite, boric acid-borax mixtures (1:1), and zinc borate fillers affect the thermal and mechanical properties of the poly (lactic acid) (PLA). For this purpose, three different boron fillers were added to the PLA matrix at four different concentrations of 3 %, 5 %, 8 %, and 12% wt. UL-94 test was conducted to comprehend the impacts of boron fillers on the fire resistance of the biocomposites. Thermogravimetric analysis was applied to determine the thermal stability, mass loss, and decomposition temperature of the samples. The biocomposite's significant mechanical properties, such as tensile strength, flexural strength, Young's modulus, and elongation at break, were assessed using tensile and three-point bending tests. Although the tensile and flexural strengths of PLA reduced, flexural and Young's modulus rose by roughly 20 % and 22 %, respectively, with rising boron filler rates.

本研究旨在了解钠硼解石、硼酸-硼砂混合物 (1:1) 和硼酸锌填料如何影响聚乳酸 (PLA) 的热性能和机械性能。为此，将三种不同的硼填料以 3%、5%、8% 和 12% wt 四种不同的浓度添加到 PLA 基质中。进行 UL-94 测试是为了了解硼填料对生物复合材料耐火性的影响。应用热重分析来确定样品的热稳定性、质量损失和分解温度。使用拉伸和三点弯曲测试评估生物复合材料的重要机械性能，例如拉伸强度、弯曲强度、杨氏模量和断裂伸长率。尽管 PLA 的拉伸强度和弯曲强度降低，但随着硼填料比例的增加，弯曲模量和杨氏模量分别上升约 20% 和 22%。