磁致型聚己内酯/纳米四氧化三铁形状记忆复合电纺纤维的制备与表征

Research on synthesis and performance of PCL/Fe_3O_4 shape memory electrospinning composite nanofibers

以交联的聚己内酯(c-PCL)作为复合电纺纤维的基体材料,纳米四氧化三铁(Fe3O4)作为添加填料,运用静电纺丝的技术,制备了在交变磁场下回复的形状记忆复合纳米电纺纤维。通过X射线衍射(XRD)、透射电镜(TEM)对制备的Fe3O4纳米颗粒进行了表征;利用扫描电镜(SEM)、差式扫描量热法(DSC)及动态力学分析(DMA)等检测手段对PCL/Fe3O4复合纳米纤维进行了表征。实验表明:粒径为14nm的Fe3O4在电纺丝中均匀分布,制备的复合纳米纤维的转变温度为53℃,在交变磁场中具有较好的形状记忆性能。

One class of biodegradable polymer composite nanofibers was fabricated with an electrospinning process using chemical crossqinked poly（e-caprolactone）（c-PCL）as the matrix and Fe3O4 nanoparticles as the reinforced filler. The composition and morphology were mainly analyzed by X-ray diffraction （XRD）and transmission electron microscopy （TEM）. The morphology and shape memory property of the nanofibers were characterized by scanning electron microscopy （SEM）, differential scanning calorimetry （DSC）and dynamic mechanical analysis （DMA）. The results showed that the Fe3O4 nanoparticles with size of 14nm uniformly dispersed in the electrospun fibers. And the transition temperature of the prepared fibers was 53 ℃, besides,the fibers showed well shape memory property in alternating magnetic field.