原位复合法制备磁性纤维素纤维及其性能研究

以天然棉纤维为基材,用原位复合法在上沉积磁性Fe3O4纳米粒子,制备出磁性纤维素纤维,利用X射线衍射仪、傅立叶变换红外光谱仪、扫描电子显微镜等方法对所得产物中磁性粒子进行表征。探究了预处理方法以及铁离子（Fe^3＋/Fe^2＋=2）浓度对制得的纤维磁性能的影响,并对磁性纳米粒子与纤维的结合牢度进行了讨论。结果表明：两个因素均会对纤维的磁性能产生影响,当用5%Na OH处理棉纤维原料,在铁离子总浓度为0.10 mol/L（Fe^3＋/Fe^2＋=2）反应时,最有利于磁性纳米颗粒在其表面的沉积,制得棉纤维复合材料的磁性能可以达到11.90 eum/g;经多次洗涤后磁性纤维的磁性能稍有下降,说明磁性纳米粒子对纤维附着力较好,期望被用作功能材料。

Preparation and Property of Magnetic Cellulose Fiber Via In-situ Deposition Process

The magnetic cellulose fiber composite was prepared using natural cotton fiber as matrix through in-situ deposition method. The formation of magnetic particle on the cellulose fiber was detected by X-ray diffraction, Fourier transform infrared spectroscopy and field emission scanning electron microscopy. The effects of different pretreatment methods and the total concentration of iron ions （Fe^3＋/Fe^2＋=2） on the magnetic properties of cellulose fiber composite were investigated using vibrating sample magnetometer. Experimental results showed that the alkali treatment process and higher concentration of iron ion could help the deposition of Fe3O4 nanoparticles on the cellulose fiber. Obtained fiber composite had high magnetic property of 11.90 eum/g c（Fe^3＋/Fe^2＋= 2）= 0.10 mol/5% NaOH] and the magnetic property just had slight decrease after repeated washing So the magnetic cellulose fiber was expected to be used as new functional materials.