Preparation and characterization of magnetic polyimide composite films copolymerized with aminophthalocyanine-coated Fe3O4 nanocrystals
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.
KeywordsFe3O4 Polyimide Composite Film Phthalocyanine Dynamic Mechanical Analysis
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).
- 3.P. Bhattacharya, C.K. Das, J. Mater. Sci.: Mater. Electron. 24, 1927 (2013)Google Scholar
- 10.P. Kumar, H.N. Lee, R. Kumar, J. Mater. Sci.: Mater. Electron. 25, 4553 (2014)Google Scholar
- 18.X. Lou, J. Huang, T. Li, H. Hu, B. Hu, Y. Zhang, J. Mater. Sci.: Mater. Electron. 25, 1193 (2014)Google Scholar
- 19.T.-M. Liu, J. Yu, C.A. Chang, A. Chiou, H.K. Chiang, Y.-C. Chuang, C.-H. Wu, C.-H. Hsu, P.-A. Chen, C.-C. Huang, Sci. Rep. (2014). doi: 10.1038/srep05593
- 20.T. Chen, X. Zhang, J. Qian, S. Li, X. Jia, H.-J. Song, J. Mater. Sci.: Mater. Electron. 25, 1381 (2014)Google Scholar
- 23.J. Wei, H. Tang, X. Liu, J. Mater. Sci.: Mater. Electron. 25, 520 (2014)Google Scholar
- 25.J. Xu, Y. Yang, Z. Xie, J. Mater. Sci.: Mater. Electron. 25, 3028 (2014)Google Scholar
- 28.P. Fan, W. Fan, Z. Zheng, Y. Zhang, J. Luo, G. Liang, D. Zhang, J. Mater. Sci.: Mater. Electron. 25, 5060 (2014)Google Scholar