 The study investigates the impact of chemical treatments on the physical and mechanical properties of natural fibres such as arecafront, banana, and flax fibres using reagents like sodium bicarbonate, potassium permanganate, and chromium sulfate. Tensile strength was measured to analyse treatment effects while scanning electron microscopy visualised surface morphology and Fourier transform infrared spectroscopy interpreted functional group modifications. Results showed a decrease in fibre diameter with increased density post-treatments, with chromium sulfate being the most effective for arecafront and flax fibres, while sodium bicarbonate was best for banana fibres. SEM images revealed clear visibility of inner cell structure and protruding secondary fibres for treated fibres, while reagent coatings were observed in chromium sulfate-treated samples. FDIR analysis showed distinct bands corresponding to cellulose, hemicellulose, and lignin indicating functional group modifications. This article was authored by Srinivas Senoy Hekadka, Suhos Yeshwant Nomok, Thomas Joe, and others. We are article.tv, links in the description below.