Three different blending sequences were used to prepare the peanut shell powder (PSP)‐filled polylactic acid (PLA)/thermoplastic corn starch (TPCS) biocomposites. The blending sequences can be summarized as (1) S1: PLA was added, followed by TPCS and PSP, (2) S2: PLA was added, followed by PSP and TPCS, and (3) S3: TPCS was added, followed by PLA and PSP. Various loadings of PSP filler were used from 0 to 40 wt%. The correlation between different blending sequences and PSP filler loading of PLA/TPCS biocomposites were discussed in terms of processing torque, tensile properties, surface morphology, and thermal degradation. Results showed that S1 system is the best blending sequence to prepare PLA/TPCS biocomposites compared to S2 and S3 systems. S1 system had established the low stabilization torque, better tensile strength, elongation at break, and thermal stability. Scanning electron microscopy (SEM) analysis of S1 system revealed better adhesion between filler and the matrix. Incorporation of PSP had influenced the properties of PLA/TPCS biocomposites. Increment of PSP loading increased stabilization torque and tensile modulus while decreasing tensile strength, elongation at break, and thermal stability of PLA/TPCS biocomposites. SEM analysis also managed to detect holes and cavities as the filler pulled out on the tensile fractured surface due to poor adhesion between filler and matrix.

中文翻译：

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不同配比顺序和花生壳粉负载量对聚乳酸/热塑性玉米淀粉生物复合材料性能的影响

使用三种不同的混合顺序来制备花生壳粉（PSP）填充的聚乳酸（PLA）/热塑性玉米淀粉（TPCS）生物复合材料。混合顺序可以概括为（1）S1：添加PLA，然后添加TPCS和PSP，（2）S2：添加PLA，然后添加PSP和TPCS，以及（3）S3：添加TPCS，然后添加PLA和PSP。PSP填料的各种添加量为0至40 wt％。从加工扭矩，拉伸性能，表面形态和热降解方面讨论了PLA / TPCS生物复合材料不同混合顺序与PSP填充量之间的相关性。结果表明，与S2和S3系统相比，S1系统是制备PLA / TPCS生物复合材料的最佳混合顺序。S1系统建立了低稳定扭矩，更好的拉伸强度，断裂伸长率，和热稳定性。S1系统的扫描电子显微镜（SEM）分析显示填料与基体之间具有更好的附着力。PSP的掺入影响了PLA / TPCS生物复合材料的性能。PSP负荷的增加增加了稳定扭矩和拉伸模量，同时降低了PLA / TPCS生物复合材料的拉伸强度，断裂伸长率和热稳定性。由于填料与基体之间的粘合力差，当填料从拉伸断裂的表面上拉出时，SEM分析还可以检测到孔和腔。PSP负荷的增加增加了稳定扭矩和拉伸模量，同时降低了PLA / TPCS生物复合材料的拉伸强度，断裂伸长率和热稳定性。由于填料与基体之间的粘合力差，当填料从拉伸断裂的表面上拉出时，SEM分析还可以检测到孔和腔。PSP负荷的增加增加了稳定扭矩和拉伸模量，同时降低了PLA / TPCS生物复合材料的拉伸强度，断裂伸长率和热稳定性。由于填料与基体之间的粘合力差，当填料从拉伸断裂的表面上拉出时，SEM分析还可以检测到孔和腔。