Investigation shows improved mechanical strength and thermal behavior in jute-sisal composites, indicating durability may enhance their use in sustainable packaging.
Natural fiber-reinforced hybrid composites offer a sustainable alternative to synthetic materials due to their biodegradability, cost-effectiveness, and good mechanical properties. This study investigates jute-sisal hybrid composites supplemented with filler made of coconut shell biochar and fibers that have been alkali-treated. Alkali treatment improves fiber-matrix bonding by enhancing surface roughness and reducing impurities. Coconut shell biochar improves thermal stability, strength, and moisture resistance. The study included comprehensive testing of the composites, focusing on their thermal behavior, moisture absorption, and mechanical strength indicators—tensile, flexural, and impact. Results showed improved interfacial adhesion and mechanical properties due to alkali treatment, while biochar increased durability and thermal resistance. These bio-based composites are promising for applications in automotive parts, lightweight structures, and sustainable packaging, promoting the development of environmentally friendly polymer materials.
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Sahoo et al. (2025) studied this question.
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