Thermal and Physical Properties of Hybrid Composites Made from Used PET Bottles and Date Palm Fibers Filled with Unsaturated Polyester

Recycling polyethylene terephthalate (r-PET) bottles is a sustainable solution for reducing the accumulation of r-PET in landfills. The primary goal this study to determine viability combining fibers derived from waste and date palm (DPF) produce hybrid unsaturated polyester (UP)-based composites. Hand lay-up was used make UP/r-PET/DPF composites, which had 10%, 20%, 30% by weight, with equal weights two. Recycled leaflets were cut into 5–10 mm lengths incorporated UP matrix. composites characterized their flexural, morphological, thermal, dynamical mechanical, water absorption characteristics. thermal behavior improved when DPF added at high temperatures. However, composites' flexural strength storage modulus decreased due non-uniform distribution, made it hard fillers adhere SEM micrographs composite's fracture surfaces showed that amount agglomeration eventually increased as filler loading increased. Lastly, significant resistance lower proportions fibers.