Biodegradable natural plant fiber isolated from the prop roots of fragrant screwpine (FSP) plant has been thoroughly studied as a potential replacement for artificial fiber in light weight bio-based composite applications. Chemical, physical, Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, differential scanning calorimetry, and thermo gravimetric studies were used to determine the appropriateness of FSP fiber for use as a novel reinforcement. FSP fibers were determined to have a density of 1.3852 g/cm 3 and a diameter of 27-280 μm respectively. Good specific strength and bonding qualities are provided by a high cellulose content (73.10 wt%) and a low wax content (0.35 wt%). The tensile strength of raw FSP fiber was 915 ± 195 MPa, the young's modulus was 33 ± 12 GPa, and the average strain to failure rate was 4.59 ± 2.17%. Thermal analysis (TG and DTG) confirmed FSP fiber's thermal stability up to 235 C. The findings revealed that FSP fiber (FSPF) is an excellent alternative for constructing polymer-based bio-composites and other high-value products with both technical and environmental requirements.
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