Polyaniline (PANI) microspheres containing Fe3O4 nanoparticles are prepared by means of electrospinning technology using a blending chloroform solution of dodecylbenzene sulfonic acid (DBSA) doped polyaniline (PANI) with polyethylene glycol (PEG) and Fe3O4 nanoparticles. SEM images indicate that composite microspheres of PANI/PEG/Fe3O4 are prepared by means of electrospinning technology

and the diameters are in the range of 2~5 m

which are significantly influenced by the concentration of PEG polymer

the applied voltage and the mass ratio of Fe3O4 in the polymers. With increasing the concentration of PEG

cohesive microspheres turn into regular ones

meanwhile the diameters increase. In comparison

the increasing applied voltage results in gradually reduced diameters of the microspheres. In addition

the microspheres are hardly affected by the addition of various amounts of Fe3O4nanoparticles. It is found that the addition of Fe3O4nanoparticles does not affect the polymeric chain structure of PANI. However

the added Fe3O4nanoparticles contribute superparamagnetic properties to the composite microspheres

especially the saturated magnetization (Ms) increases with the increase of the adding content of Fe3O4 nanoparticles. Furthermore

the conductive ratio of the electrospinning conduct is about 110-6 S/cm.