Facile one-step synthesis of PI/Fe3O4 composite microspheres from poly(amic acid) triethylamine salts and Fe(III) ion
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Polyimide/magnetite composite microspheres were successfully prepared from poly(amic acid) triethylamine salts and Fe(III) ion via a simple one-step solvothermal process. The formation mechanism of the composite microspheres was explored. The morphology and the structure of the samples were characterized. It was found that polyimide has successfully coated on the surface of the magnetite microspheres and penetrated throughout the crystals via an assembly process. And the magnetic and thermal properties were measured, the results showing that composite microspheres have excellent thermal stabilities and the saturation magnetization is 35.29 emu/g with PI content of 60 wt%.
KeywordsMagnetite Polyimide Magnetite Nanoparticles Thermo Gravimetric Analysis Excellent Thermal Stability
This work was supported by Yorth Science Foundation of Heilongjiang Province, China (Grant No. QC2014C008), Science Foundation of Heilongjiang Academy of Sciences, China (Nos. 2014-YQ-01, 2015-YX-02 and 2015-YQ-08).
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