制备数控分散 Fe3O4 纳米粒子及其在导电纸中的应用。
Preparation of CNC-dispersed Fe3O4 nanoparticles and their application in conductive paper.
机构信息
College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China; Limerick Pulp and Paper Centre, Department of Chemical Engineering, University of New Brunswick, Fredericton, NB, Canada E3B 5A3.
Limerick Pulp and Paper Centre, Department of Chemical Engineering, University of New Brunswick, Fredericton, NB, Canada E3B 5A3.
出版信息
Carbohydr Polym. 2015 Aug 1;126:175-8. doi: 10.1016/j.carbpol.2015.03.009. Epub 2015 Mar 14.
Well-dispersed Fe3O4 nanoparticles (NPs) were synthesized by a co-precipitation method in the presence of cellulose nano-crystals (CNC) as the template. The thus prepared Fe3O4 NPs were then used as a coating agent for the preparation of conductive paper. Fourier transform infrared spectroscopy (FTIR) results revealed that the Fe3O4 NPs were immobilized on the CNC through interactions between the hydroxyl groups of CNC and Fe3O4. Scanning transmission electron microscopy (STEM) images showed that the Fe3O4 NPs prepared in the presence of CNC can be dispersed in the CNC network, while the Fe3O4 NPs prepared in the absence of CNC tended to aggregate in aqueous solutions. The conductivity of the Fe3O4 NPs coated paper can reach to 0.0269 S/m at the coating amount of 14.75 g/m(2) Fe3O4/CNC nanocomposites. Therefore, the thus obtained coated paper can be potentially used as anti-static packaging material in the packaging field.
在纤维素纳米晶体（CNC）作为模板的存在下，通过共沉淀法合成了分散良好的 Fe3O4 纳米颗粒（NPs）。然后，将制备的 Fe3O4 NPs 用作制备导电纸的涂层剂。傅里叶变换红外光谱（FTIR）结果表明，Fe3O4 NPs 通过 CNC 的羟基与 Fe3O4 之间的相互作用固定在 CNC 上。扫描透射电子显微镜（STEM）图像显示，在 CNC 存在下制备的 Fe3O4 NPs 可以分散在 CNC 网络中，而在没有 CNC 的情况下制备的 Fe3O4 NPs 倾向于在水溶液中聚集。在涂层量为 14.75 g/m(2)Fe3O4/CNC 纳米复合材料的情况下，涂覆有 Fe3O4 NPs 的纸张的电导率可达到 0.0269 S/m。因此，所获得的涂覆纸可潜在用作包装领域中的防静电包装材料。
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