Abstract
The main study of this thesis is of preparing in line with application requirements of nano-Fe 3 O 4 on the magnetic Fe 3 O 4 /PVA (polyvinyl alcohol) composite film, the effect of citric acid radical on character of Fe3O4/PVA composite film. Test infrared spectra, magnetic distortion and susceptiveness of Fe 3 O 4 /PVA composite film. It shows the Fe 3 O 4 /PVA composite film, which prepared by nano-Fe 3 O 4 with adding citric acid radical is good on dispersion but with little magnetic distort energy and susceptiveness.
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