摘要
将纳米Fe3O4磁性颗粒加入由PMDA和ODA制备的PAA聚合物溶液中,通过静电纺丝法制备PAA/Fe3O4复合纤维。利用扫描电镜(SEM)和透射电镜(TEM)对复合纳米纤维的微观形貌和Fe3O4在纤维中的分布进行了观察,采用X射线衍射仪(XRD)验证了Fe3O4在复合纳米纤维中的存在,通过磁性实验分析了纳米复合材料的磁性能,同时使用红外光谱仪对纳米复合材料的化学结构进行了分析。结果表明,所制备PAA/Fe3O4磁性纳米纤维成型良好,Fe3O4磁性颗粒已分散在纤维中,与PAA是物理复合,材料具有一定磁性,为进一步制备聚酰亚胺磁性复合纳米纤维做了有益的探索研究。聚合物磁性复合材料由于其独特的物理化学性能及超顺磁性,有着广阔的应用前景。
The PMDA and ODA were used to prepare polyamic acid（PAA）solution and Fe3 O4 magnetic nanop-articles were added to the PAA solution containing the dispersant.The nanofibers of PAA/Fe3 O4 were prepared by electro-spinning.The microstructure of nanocomposite fibers and the distribution of magnetite （Fe3 O4 ）nan-oparticles in fibers were characterized using scanning electron microscopy （SEM）and transmission electron mi-croscopy（TEM）.And X-ray diffractometry（XRD）proved that Fe3 O4 nanoparticles existed in nanocomposite fi-bers.The magnetic properties of Fe3 O4 nanoparticles and nanocomposites were characterized using SQUID. Fourier transform infrared spectroscope （FT-IR）was used to analysis the chemical structures.The study showed that the morphology of the PAA/Fe3 O4 nanocomposite fibers was uniform and continuous,and Fe3 O4 nanoparticles were dispersed in the PAA solution by physical composite.The nanocomposite fibers showed a certain magnetic property.In this paper,some beneficial investigation were made for the preparation of polyim-ide magnetic nanocomposite fibers.Polymer nanocomposites have been extensively investigated for their poten-tial wide applications because of their unique physicochemical properties and superparamagnetic behavior.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2014年第10期38-40,44,共4页
Journal of Functional Materials
基金
国家自然科学基金资助项目(51006046)
教育部博士点专项基金资助项目(20090093110004)
关键词
聚酰胺酸
静电纺丝
纳米复合纤维
磁性
polyamic acid
electrospinning
nanocomposite fibers
magnetic property
