Speaker
Description
In this work, bacterial cellulose (BC) was biosynthesized by Glucanobacter xylinum bacteria. Fe$_{3}$O$_{4}$ nanoparticles under different concentrations were ex-situ impregnated into the BC structure. The BC pellicles in both never-dried and freeze-dried states were used as the templates to form BC-Fe$_{3}$O$_{4}$ nano-composites. Morphological studies of the samples indicated that the 3-dimensional networks of fine fiber structure were enveloped by Fe$_{3}$O$_{4}$ nanoparticles. Moreover, the Fe$_{3}$O$_{4}$ nanoparticle was dispersed without any obvious agglomeration. The FTIR and XRD analysis showed that both never-dried and freeze-dried samples have almost similar results. Nevertheless, the saturation magnetization (M$_{s}$) of the never-dried samples was found to be higher than the freeze-dried samples, at the same Fe$_3$O$_4$ concentration. It was attributed to infiltration ability of the nanoparticles in the never-dried environment.
Keywords: bacterial cellulose; nanoparticles; characteristics; magnetic properties
