Ben Amor Ichrak, Klinkova Olga, Baklouti Mouna, Elleuch Riadh, Tawfiq Imad
Laboratoire QUARTZ EA7393, ISAE-Supméca Institut Supérieur de Mécanique de Paris, 93400 Saint-Ouen, France.
Laboratoire des Systèmes Electromécaniques (LASEM), Ecole Nationale d'ingénieurs de Sfax, Sfax 3038, Tunisia.
Polymers (Basel). 2023 Nov 28;15(23):4561. doi: 10.3390/polym15234561.
The aim of this study is to investigate the impact of mechanical recycling on the physical and mechanical properties of recycled polyamide 6 (PA6) and polyamide 66 (PA66) in relation to their microstructures. Both PA6 and PA66 raw materials were reprocessed six times, and the changes in their properties were investigated as a function of recycling number. Until the sixth round of recycling, slight changes in the mechanical properties were detected, except for the percentage of elongation. For the physical properties, the change in both flexural strength and Young's modulus followed a decreasing trend, while the trend in terms of elongation showed an increase. Microscopic analysis was performed on virgin and recycled specimens, showing that imperfections in the crystalline regions of polyamide 6 increased as the number of cycles increased.
本研究的目的是研究机械回收对再生聚酰胺6（PA6）和聚酰胺66（PA66）的物理和机械性能及其微观结构的影响。PA6和PA66两种原材料均进行了六次再加工，并研究了其性能随回收次数的变化。直到第六轮回收，除伸长率外，机械性能检测到轻微变化。对于物理性能，弯曲强度和杨氏模量的变化呈下降趋势，而伸长率方面的趋势呈上升趋势。对原始和回收试样进行了微观分析，结果表明聚酰胺6结晶区域的缺陷随着循环次数的增加而增加。
