蓬松态磁性纳米纤维的制备
毕业论文关键词 磁性纳米纤维；静电纺丝技术；聚丙烯腈；四氧化三铁
Title Preparation and characterization of the magnetic fluffy state nanofibers
Abstract Nowadays, magnetic nano fiber has received extensive attention because of its unique physical and chemical properties. The research direction of this paper is to study a kind of magnetic nano fiber material with high porosity. The specific research program: using ultrasonic method to prepare magnetic Fe3O4 nanoparticles (Fe3O4), using Triton X-100 this surfactant as a dispersing agent for the preparation of Fe3O4 nanoparticles solution. After the dispersion is finished, the /Fe3O4 magnetic nano fiber (PAN) was prepared by electrospinning technique. Using X- ray diffraction (XRD) demonstrated the presence of Fe3O4 nano fibers in the. And by using the scanning electron microscope (SEM) of the fluffy state magnetic nano fiber morphology were observed, in addition, also on the nano magnetic fiber average diameter and Fe3O4 distribution was observed. The phenomenon of nano fibers can be adsorbed by the magnet, and the magnetic properties of the prepared nano fibers are proved. Results show that the prepared polyacronitrile (PAN) / Fe3O4 magnetic nano fiber pore and porosity, namely large fluffy effect compared to not to join the Fe3O4 nano fiber superior to many. And the nano fiber mean diameter and Fe3O4 nano particles distribution and ferroferric oxide addition. With the increasing concentration of magnetic ferroferric oxide nano particles, prepared by the nano magnetic fiber diameter of uneven increased, the average diameter of the magnetic nanometer fiber with the increase of the concentration, the mean diameter will gradually reduce. Therefore, the magnetic nano fiber can be used in three-dimensional cell culture and tissue support and so on.
Keywords Magnetic nano-fibers; Electrospinning; Polyacrylonitrile; Iron oxide
目次
1引言1
1.1磁性纳米纤维材料1
1.2静电纺丝技术制备磁性纳米纤维1
1.3四氧化三铁在磁性纳米纤维中的掺杂作用2
1.4蓬松态磁性纳米纤维的应用前景3
1.5本课题的提出3
2实验部分5
2.1材料和仪器5
2.2磁性四氧化三铁纳米微粒分散液的制备6