Separation and Improvisation of a Unique Natural Cellulosic Fiber From the Exterior Sheet of Bangladeshi Amaranthus viridis

Abstract

Growth of renewable plant-based cellulosic fiber is vital for a sustainable future. Natural cellulosic fibers are important for sustainability since they are renewable and biodegradable and have a minimal environmental effect. Extracting these fibers benefits environmentally friendly companies by providing alternatives to synthetic products, lowering carbon footprints, and reusing agricultural waste. This article describes a newly produced and unique natural fiber made from Amaranthus viridis fibers (AVFs) using hot water and 5% NaOH retting. ASTM standards have been used to evaluate the fiber’s hygroscopic behavior, density, fiber bundle strength, burning behavior, and chemical components. X-ray diffraction, scanning electron microscopy, Fourier-transform infrared, burn test, and thermogravimetric analysis tests are used to assess the fiber crystallinity, fiber arrangement, biological classification, combustion activity, and temperature sensitivity of substances materials. The extracted AVF with high cellulose content comprises 46.54% cellulose and has a mean moisture recovery and content percentage of 22.49% and 18.35%, accordingly. The suggested fiber has a mean tensile strength of 10.23 g/tex and breaking extension of 1.35 mm and got crystallinity of 41%. This fiber degrades at 595°C. The fiber is predominantly cellulose-based, with great moisture retention and recovery, strong strength, and thermal stability (degrades at 595°C). It possesses a moderate crystallinity that balances strength and flexibility, although it is less elastic (low breaking extension). It is appropriate for moisture management applications but not for ones that require a lot of stretch. This fiber has several applications, including biological materials, cellulose nanoparticles, and fiber-reinforced​ composites.