Lekrine, et al (2024) Thermomechanical and structural analysis of green hybrid composites based on polylactic acid/biochar/treated W. filifera palm fibers. Journal of Materials Research and Technology. https://doi.org/10.1016/j.jmrt.2024.06.033

A recent study published in the Journal of Materials Research and Technology investigates the effects of sodium bicarbonate treatment on Washingtonia filifera (WF) palm fibers and their integration into polylactic acid (PLA) composites. The research, conducted by Abdelaziz Lekrine and colleagues, examines how varying treatment durations impact the physical and mechanical properties of PLA/WF-biochar/biomass hybrid biocomposites.

The study highlights that treating WF fibers with sodium bicarbonate enhances fiber-matrix bonding by removing impurities. The researchers used differential scanning calorimetry, thermogravimetric analysis, and Fourier transform infrared spectroscopy to analyze the thermal behavior and mineralogical composition of both treated and untreated fibers. They found that a 72-hour treatment period optimally improved mechanical properties, including elasticity modulus and tensile and flexural strength.

The new hybrid biocomposites, which include biocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More and treated WF fibers, demonstrated superior impact resistance and biodegradability compared to traditional composites. These improved materials show promise for use in various structural and non-structural applications, such as automotive interiors, 3D printer filament, biomedical equipment, sports gear, and food packaging.

This study underscores the potential of combining biochar and chemically treated natural fibers with biodegradable polymers to create sustainable and high-performance materials, opening new avenues for environmentally friendly and durable composite materials.