Project(20060390884)supported by the Postdoctoral Science Foundation of China;Project(2006FJ4240)supported by the PostdoctoralScience Foundation of Hunan Province,China;Project(30672047)supported by the National Natural Science Foundation of China
PEG-PEI/Fe3O4 nano-magnetic fluids with different mass fractions of reactant were prepared by co-precipitation method. Besides particle size analyzer,the methods of XRD,IR,VSM and AFM were adopted to characterize the ...