Characterization of Thermally Stable Bamboo Fiber Sheet Loaded with Cobalt Ferrite Nanoparticles

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

Lumen-Loading procedure of CoFe₂O₄-SiO₂-PEI on the disintegrated bamboo fibers