This article studied the magnetic properties of magnetostrictive material --cobalt ferrite nanoparticles. These nanoparticles were mixed physically into PSF polymer dope, and PSF-CoFe2O4 composite membrane was prepared by phase-inversion method. The performances and the microstructure of as-prepared membrane were investigated through the methods of UF experiments in magnetic field, DSC, MPMS, SEM and contact angle goniometer tests.
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