The degradation behaviors of hemp fibers reinforced PP biocomposites under outdoor and artificial weathering were compared to establish a correlation. For this purpose, several measurements were performed throughout the expositions. Mechanical performance was tested by three-point bending test. Microstructure and chemical composition changes were also assessed. Otherwise, visual aspect and topography were determined. The artificial weathering effectively accelerated the degradation mechanisms. Oxidation pathways and surface aspect alteration of both polymer and biocomposites occurred faster. However, whereas biocomposites were mainly subjected to outdoor conditions due to high sensitivity of hemp fibers, neat PP was globally mostly affected by laboratory chamber conditions. Its oxidation rate largely outstripped reinforced materials ones. Principal Component Analysis was used for verifying the differences of variables correlations profiles between artificial and exterior ageing dataset in order to compare the degradation mechanisms. Through the statistical analysis, some attempts were made to find equivalence between artificial and outdoor weathering times thanks to properties degradation rate similarities.

比较了大麻纤维增强的PP生物复合材料在室外和人工气候下的降解行为，建立了相关性。为此目的，在整个博览会期间进行了几次测量。通过三点弯曲测试来测试机械性能。还评估了微观结构和化学成分的变化。否则，确定视觉方面和地形。人工风化有效地加速了降解机理。聚合物和生物复合物的氧化途径和表面形态变化发生得更快。然而，由于大麻纤维的高敏感性，生物复合材料主要受到室外条件的影响，而全球范围内，纯净聚丙烯主要受实验室条件的影响。它的氧化率大大超过了增强材料。主成分分析用于验证人工和外部老化数据集之间变量相关性曲线的差异，以便比较退化机理。通过统计分析，由于性能退化率的相似性，人们进行了一些尝试来寻找人工和室外风化时间之间的等效性。