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Preparation and characterization of magnetic polyimide composite films copolymerized with aminophthalocyanine-coated Fe3O4 nanocrystals

  • Changwei Liu
  • Chunyan Qu
  • Dezhi Wang
  • Hao Feng
  • Ping Liu
  • Yang Zhang
Article

Abstract

Iron-aminophthalocyanine-coated Fe3O4 hybrid nanospheres were synthesized by a one-step solvent-thermal method and followed by a catalytic hydrogenation route. To effectively utilize the excellent magnetic sensitivity of the functional aminophthalocyanine/Fe3O4 hybrid nanospheres, we have developed a novel series of flexible Fe3O4@polyimide (PI) composite films, which was prepared with various Fe3O4/FePc–NH2 nanoparticle loadings (7, 15, 27 and 40 wt%). All of the flexible thin films have uniform morphology without any agglomeration, which had been confirmed by the analysis of scanning electron microscope images. The above composite films, which have the higher saturation magnetization compared with that of the corresponding pure Fe3O4/PI films, illustrate that the excellent compatibility and homogeneous dispersion of the amine-coated Fe3O4 particles in the PI matrix based on the strong chemisorptions of PI onto the Fe3O4 surfaces and polymerization reactions between the amine groups and anhydride groups could significantly affect the magnetic properties of nanocomposite materials. The observed enhanced thermal stabilities, dramatic increased storage modulus and increased glass transfer temperatures (Tgs) of the magnetic films with increasing the particle loadings indicate that the composites could be a candidate to be used as high-performance absorbing materials.

Keywords

Fe3O4 Polyimide Composite Film Phthalocyanine Dynamic Mechanical Analysis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

This work was supported by Youth Science Foundation of Heilongjiang Province, China (Grant No. QC2014C008) and Youth Science Foundation of Heilongjiang Academy of Sciences (No. 2014-YQ-01).

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Changwei Liu
    • 1
  • Chunyan Qu
    • 1
  • Dezhi Wang
    • 1
  • Hao Feng
    • 1
  • Ping Liu
    • 1
  • Yang Zhang
    • 1
  1. 1.Institute of PetrochemistryHeilongjiang Academy of SciencesHarbinChina

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