Nanocrystalline cellulose/magnetic nanospheres were in-situ synthesized with laboratory-made reed pulp nanocrystalline cellulose (NCC). With atomic force microscope (AFM), transmission electron microscope (TEM), environmental scanning electron microscope (ESEM), magnetic particle solid content, porosity of nanocrystalline cellulose magnetic nanospheres, fourier transform infrared (FT-IR) spectroscopy, and X-ray diffraction (XRD), the results show that the magnetic particles is nano-Fe3O4 , which is fully dispersed in NCC through chemical bonding and physical adsorption with NCC to form nanocrystalline cellulose/magnetic nanospheres. Nanocrystalline cellulose/magnetic nanospheres are in-situ synthesized under optimal preparation conditions with NCC concentration of 1. 0%, stirring speed of 500 r/min, total iron ion concentration of 0.0065 mol/L(the mass fraction of magnetic particle theory quality is 5% to NCC). Nanocrystalline cellulose/magnetic nanospheres with vacuum freeze-drying has the magnetic properties of magnetized strength of 73. 39A · m2/kg (per gram ash) and coercivity of 1599. 96A/m.%利用实验室自制芦苇浆纳米纤维素原位合成纳米纤维素/磁性纳米球.通过原子力显微镜、透射电子显微镜、环境扫描电子显微镜、固含量、孔隙率、傅里叶变换红外光谱以及X射线衍射测试分析,结果表明磁性粒子为纳米Fe3O4,纳米Fe3O4与纳米纤维素通过化学键合和物理吸附使得纳米Fe3O4充分分散在纳米纤维素中,形成纳米纤维素/磁性纳米球；纳米纤维素浓度为1.0％,搅拌速度为500r/min,总铁离子浓度为0.0065mol/L(磁性粒子理论质量相对于纳米纤维素质量分数为5％)最佳制备条件下,原位合成纳米纤维素/磁性纳米球,经真空冷冻干燥,所得纳米纤维素/磁性纳米球具有磁化强度73.39A·m2/kg(以每克灰分计)、矫顽力1599.96A/m的磁特性.
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