聚丙烯腈/氧化铁纳米粒子复合纳米纤维的制备及表征

Preparation and Characterization of Polyacrylonitrile/Iron Oxide Nanoparticles Composite Nanofibers

利用静电纺丝技术制备了一种聚丙烯腈(PAN)/氧化铁(Fe_2O_3)纳米粒子复合纳米纤维。不同分子量的PAN得到不同直径的纤维薄;将PAN的N,N-二甲基甲酰胺溶液(DMF)与纳米Fe_2O_3混合得到PAN/Fe_2O_3溶液,然后利用静电纺丝技术制备PAN/Fe_2O_3纳米粒子复合纳米纤维;将静电纺丝制备的PAN纳米纤维膜与氯化铁(FeCl_3)溶液在不同p H条件下水热合成PAN/Fe_2O_3纳米粒子复合纳米纤维。采用扫描电子显微镜(SEM)、热重分析仪(TGA)对纳米纤维膜进行表征。结果表明:静电纺丝制备的PAN纳米纤维在水热条件下可以一定程度上克服Fe_2O_3纳米粒子易团聚问题。

A polyacrylonitrile （PAN） / iron oxide （Fe2O3） nanoparticle composite nanofibers was prepared by electrospinning. PAN with different molecular weights were obtained with different diameters. PAN / Fe2O3 solution was obtained by mixing PAN with N, N-dimethylformamide solution （DMF） and nano-Fe2O3. PAN/Fe2O3 nanoparticle composites were prepared by electrospinning Nanofibers were prepared by hydrothermal synthesis of PAN/Fe2O3 nanoparticle composite nanofibers with PAN nanofiber membranes prepared by electrospinning and ferric chloride （FeCl3） solution under different pH conditions. The nanofiber membranes were characterized by scanning electron microscopy （SEM） and thermogravimetric analysis （TGA）. The results show that PAN nanofibers prepared by electrospinning can overcome the problem of easy agglomeration of Fe2O3 nanoparticles to some extent under hydrothermal conditions.