Syduzzaman, Md.Ahmed, A. T. M. FaizRahman, Md. RedowanurSezer, Gamze OkyayEadul, Fazlul HaqueHassan, TanvirIslam, Md. Jahirul2026-06-192026-06-1920260927-64401568-5543https://doi.org/10.1080/09276440.2026.2668131https://hdl.handle.net/20.500.12899/5650High-density polyethylene (HDPE) waste poses a severe environmental threat, with only 9% recycled globally. This study develops sustainable composites by reinforcing recycled HDPE (rHDPE) with RUCOSTAR EEE6-treated jute fabric at 6 and 12 wt.% loadings. Two treatment concentrations (50 g/L and 70 g/L) were applied via dip-pad-dry-cure to enhance hydrophobicity and interfacial adhesion. Six composite variants were fabricated through compression molding, and their physical, mechanical, and hygroscopic properties were evaluated. The 70 g/L treatment significantly reduced water absorption (E70F12 < 3% vs. 9% for untreated RF12), while increasing density confirmed improved impregnation and reduced void content. Tensile tests revealed enhanced ductility (up to 34% higher strain at break) with modest strength trade-offs at 12 wt.% loading. A feed-forward artificial neural network (ANN) was developed to predict the stress-strain constitutive relationship sigma = f(epsilon), with hyperparameters selected via 5-fold cross-validation and stability assessed over ten reruns. The optimized model achieved median R >= 0.97 and MAE below 0.50 MPa on the held-out test set, outperforming polynomial fitting, SVR, and random forest. This hybrid experimental - computational approach demonstrates that EEE6-treated jute/rHDPE composites offer moisture-resistant, high-ductility green materials for structural applications.eninfo:eu-repo/semantics/closedAccessJute CompositesRecycled Polymer CompositesHygroscopic And Mechanical PropertiesBiocompositesAnn ModelingArticle10.1080/09276440.2026.26681312-s2.0-105037751194Q1WOS:001755665100001Q3