Characterization of cellulose/magnetic nano-composites prepared by a static-magnetic field assisted in-situ composition
The novel cellulose/magnetic nanocomposites were prepared by using the plentiful nanosized micropores and micro voids in cellulose fibers as templates through a static-magnetic field assisted in-situ composition. The influences of maturing time and templates’ characteristics on composition efficiency were discussed. The structures of the magnetic nanocomposites were characterized by forrier transfer infrared (FTIR), scanning electron microscopy (SEM), atomic force microscopy (AFM) and X-ray diffraction. Results show that the composition efficiency is significantly enhanced by the static-magnetic field assisted in-situ process and the magnetic particles’ content increases greatly. FTIR confirms that Fe2O3 is composited successfully on cellulose fibers. X-ray diffraction shows that the magnetic particles are mainly in the C phase of γ-Fe2O3 and Fe3O4 phase is also exited. SEM images reveal that magnetic particles are mostly composited on fibers’ surface and seldom in lumen. AFM shows that the magnetic particles size is about 20～100nm. The prepared magnetic nanocomposite is superparamagnetic with its saturation magnetization of 17.5emu/g fiber determined by superconducting quantum interference device (SQUID).
TANG Ai-min QIAN Rongjing
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology,Guangzhou, 510640, P.R.China
国际会议
2009 International Conference on Advanced Fibers and Polymer Materials(2009年先进纤维与聚合物材料国际学术会议)
上海
英文
1095-1098
2009-10-21（万方平台首次上网日期，不代表论文的发表时间）