Natural fibers are one of the good alternative sources for replacing synthetic fiber and reinforcing polymer matrices because of their eco-friendly nature. This investigation deals with the extraction and characterization of new natural fiber from Indian mallow plant stem. The physico-chemical, thermal, and mechanical properties of Indian mallow fibers (IMFs) were reported and compared with other natural fibers for the first time. Cellulose (78.22%), wax (0.47%), density (1.33 g/cm³), and tensile strength (979.83 MPa) were recognized in IMFs. Fourier transform-infrared spectroscopy, X-ray diffraction, and thermo-gravimetric analysis confirmed that IMFs are rich in cellulose content and thermally stable with a crystallinity index of 72%.

The aim of this present investigation is to improve the properties of natural fiber from red banana peduncle plant by alkali treatment for the first time. The main objective of this paper was to study the physico-chemical, thermal, and mechanical properties which are chemically modified by alkaline treatment of red banana peduncle fiber (ARBPF), which is used as a reinforcement in the polymer matrix and finally to make an end product for various industrial applications. The result indicates that cellulose content was improved in ARBPF when compared to untreated red banana peduncle fiber which is proved through X-ray diffraction (XRD) studies recording high crystalline index in fibers. The thermal property of ARBPF also exhibiting good thermal stability was observed by thermo-gravimetric analysis (TGA), atomic force microscopy (AFM) analysis confirmed that the surface of the fiber is rough.

The research article focused on the effect of wood sawdust as secondary filler reinforcement in Indian mallow fiber yarn mat reinforced with polyester composites. Composites were fabricated along the transverse and longitudinal orientation in six different combinations by compression molding machine. The mechanical properties of composites by single and double layer yarn mat with and without wood sawdust filler were evaluated while loading composites specimen on warp and weft direction at the first time in this research paper. The Indian mallow fiber double layer longitudinal orientation yarn mat/wood sawdust filler/polyester composite specimen along the warp direction was found to exhibit optimum mechanical properties compared to other composites. Furthermore, the Indian mallow fiber yarn mat composites were fabricated with helmet and civil construction pipes at first time in this work to replace the synthetic fiber through natural fiber. Scanning electron microscopy was performed to study the morphologies of internal crack and fractured surface of composites.