HIGHLIGHTS
SUMMARY
The structure of the reference polymer film PEI-0 and of the nanocomposite films PEI-10, PEI-20, PEI-30, PEI-40, and PEI-50 was confirmed by FTIR spectroscopy. The FTIR spectra of nanocomposites were almost identical to that of PEI-0, suggesting that the nanoparticles and PEI matrix interact only by physical gesting thatdo thenot nanoparticles andbonding PEI matrix interact only by physical forces and do not forces and form chemical together. form chemical together. the morphology of the neat PEI and PEI/CoFe2O4 films. In theitcase samples that withthe highnanoparticles ferrite . . .
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