Characterisation of thermally stable bamboo fibre sheet loaded with cobalt ferrite nanoparticles

Abstract

Abstract Magnetic fibres were synthesized by lumen loading method using bamboo fibres as a cellulose source, as well as cobalt ferrites nanoparticles with polyethyleneimine (PEI) as a retention aid. Bamboo fibre is a significant fibrous raw material, and cobalt ferrites particles are suitable for magnetic modification. The resulting composite retained the intrinsic features of cellulose fibre while gaining the magnetic properties of nanoparticles. Cobalt ferrites nanoparticles were synthesised using a sol-gel technique and coated with tetraethyl orthosilicate (TEOS) molecules before being functionalized with polyethyleneimine (PEI). Scanning electron microscopy (SEM), thermogravimetric analysis (TGA), X-ray diffraction (XRD), Fourier transform infrared (FTIR), and a vibrating sample magnetometer (VSM) were used to characterise the samples The nanoparticles produced had an inverse cubic spinel crystalline structure and exhibited ferrimagnetic activity. The coercivity value for Modified fibre produced is greater than 200 Oe, indicating that it may be utilised for magnetic recording.