Pandanus Tectorius Fiber/ Rice Husk Powder as Green Reinforcement for Lightweight Composites: Evaluation of Impact Strength Properties and Thermal Stability

Agricultural wastes such as Pandanus tectorius fiber (DPs) and rice husk powder (RHs) are cost-effective, low-density, biodegradable, and environmentally friendly materials. This study investigates the impact strength and thermal properties of polyester composites with varying DPs/RHs ratios. DPs treated with ۲۰% NaOH were combined in ۱۰%, ۱۵%, ۲۰%, and ۳۰% (vol.), while RHs were varied from ۵% to ۱۰% (vol.). The results showed that increasing fiber content improved the composite's impact strength and thermal stability. The highest impact strength was achieved by sample G۳۰/۱۰ (۳۰% DPs: ۱۰% RHs) at ۵۵.۸ ± ۱.۸۹ KJ/mm², while the lowest was X۱۰/۵ (۱۰% DPs: ۵% RHs) at ۲۲.۲۳ ± ۳.۴ KJ/mm². Sample X۳۰/۵ (۳۰% DPs: ۵% RHs) exhibited the best thermal stability with only ۴.۴۷% weight loss, whereas sample G۱۵/۱۰ (۱۵% DPs: ۱۰% RHs) experienced ۶۷% weight loss. SEM analysis revealed fiber-matrix interactions influencing impact properties. These findings suggest that DPs/RHs composites could be applied in lightweight, green thermal insulation solutions, and automotive components, promoting sustainable waste utilization.

کلیدواژه ها:

Composites ، Pandanus tectorius fiber ، rice husk ، Impact Strength ، Scanning Electronic Microscopy (SEM) ، Thermogravimetric Analysis (TGA)