CELL 21 |
| Magnetic composite fiber is one of the most fascinating materials with applications range broadly over the military and civilian spheres. In our previous work, novel regenerated cellulose fibers were spun from cellulose dope in NaOH/urea aqueous solution pre-cooled to -12 „aC by using a small-scale pilot spinning machine. In present work, new cellulose functional fibers were fabricated by immersing the spun cellulose wet fibers into FeCl3 solution, in which Fe3+ could be readily impregnated into the cellulose fibers through the pores. After being treated with NaOH solution and water, iron oxide ( Fe2O3 ) nanoparticles were in situ synthesized in the cellulose fibers. The results from transmission electron microscopy (TEM) indicated that the magnetic Fe2O3 nanoparticles were uniformly dispersed in the cellulose matrix. The composite fibers exhibited interesting Uv-ray absorbance, superparamagnetic properties, and novel dielectronic constant. It was important for the protection against electromagnetic wave or magnetic shielding materials. Acknowledgement: This work was supported by National Supporting Project for Science and Technology (2006BAF02A09), and National Natural Science Foundation of China (20474048, 20674057). |
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Structure and Properties of Cellulosic Polymers, Assemblies, and Nanocomposites
1:00 PM-4:45 PM, Sunday, April 6, 2008 Morial Convention Center -- Rm. R07, Oral
Division of Cellulose & Renewable Materials |