This paper is intended to investigate the effect of chemical treatment on the creep and recovery behavior of injection molded jute–polypropylene composites in flexural mode. The chemical treatment of short jute fibers was done using sodium hydroxide (NaOH), silane (SiH₄), potassium permanganate (KMnO₄), and the use of maleic anhydride (C₄H₂O₃) as a coupling agent. The effectiveness of the chemical treatments was initially studied by comparing the tensile and flexural properties, along with the scanning electron microscopy fractographs. The creep behavior of the composites was modeled using four-parameter Burger’s model and the same was compared with the classical power law model. To model the recovery behavior, Weibull distribution function was used. The correlation between model parameters and different chemical treatments has been emphasized. The time–temperature superposition principle was employed for predicting the long-term creep behavior of the chemically treated jute–polypropylene composites.

本文旨在研究化学处理对注射成型的黄麻-聚丙烯复合材料在弯曲模式下的蠕变和恢复行为的影响。黄麻纤维的化学处理使用氢氧化钠（NaOH），硅烷（SiH ₄），高锰酸钾（KMnO ₄）和马来酸酐（C ₄ H ₂ O _3））作为偶联剂。最初是通过比较拉伸和弯曲性能以及扫描电子显微镜分光仪来研究化学处理的有效性。复合材料的蠕变行为使用四参数Burgers模型进行建模，并将其与经典幂律模型进行比较。为了模拟恢复行为，使用了威布尔分布函数。模型参数与不同化学处理之间的相关性已得到强调。时间-温度叠加原理用于预测化学处理过的黄麻-聚丙烯复合材料的长期蠕变行为。