Journal of South China University of Technology (Natural Science Edition) ›› 2009, Vol. 37 ›› Issue (3): 75-80.

• Chemistry & Chemical Engineering • Previous Articles     Next Articles

Preparation and Characteristics of Magnetic Nano-Composite Fiber and Magnetic Paper

Tang Ai-min  Zhang Hong-wei  Chen Gang  Tian Ying-zi  Liu Ying-yao   

  1. State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2008-05-12 Revised:2008-07-21 Online:2009-03-25 Published:2009-03-25
  • Contact: 唐爱民（1965-），女，博士，副教授，主要从事纤维素化学、特种纸与功能纸的研究． E-mail:amtang@scut．edu．cn
  • About author:唐爱民（1965-），女，博士，副教授，主要从事纤维素化学、特种纸与功能纸的研究．
  • Supported by:

    国家自然科学基金资助项目（50573022）;国家“973”计划资助项目（2007CB210201）

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Abstract:

In this paper, first, cellulose/magnetic nano-composite fibers were prepared via in-situ compounding, with spruce fibers as the raw material. Next, the products were characterized by means of XRD, FFIR, SEM and AFM, finding that magnetic particles are compounded mainly on spruce fiber surface and but very little in fiber lumen, with their crystalline form of γ-Fe2O3 and with a diameter of 20 -100nm. Then, the magnetic characteristics of the products were measured by SQUID, showing that the prepared magnetic nano-composite fibers are both super- paramagnetic and ferromagnetic, with a saturation magnetization of 14. 7 emu/g （fiber）. Finally, the magnetic nano-composite fibers were added in a papermaking system in different ways, and a kind of multi-layer composite magnetic paper with orientationally-distributed nano-composite fibers was prepared. As compared with the paper made completely from magnetic fibers, the prepared composite paper is of higher whiteness and strength as well as better magnetic characteristics.

Key words: cellulose fiber, in-situ compounding, magnetic nano-particle, magnetic paper