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Fe–phthalocyanine oligomer/Fe₃O₄ nano-hybrid particles and their effect on the properties of polyarylene ether nitriles magnetic nanocomposites

Meng, Fanbin, Zhao, Rui, Xu, Mingzhen, Zhan, Yingqing, Lei, Yajie, Zhong, Jiachun, Liu, Xiaobo
Colloids and surfaces 2011 v.375 no.1-3 pp. 245-251
dispersions, ferric chloride, iron oxides, magnetic properties, magnetism, mechanical properties, nanocomposites, nanoparticles, nitriles, particle size, polymers, scanning electron microscopy, solids, solvents, thermal stability
Fe–phthalocyanine oligomer/Fe₃O₄ nano-hybrid particles were successfully prepared from bis-phthalonitrile and FeCl₃·6H₂O through a simple and effective solvent-thermal route. The hybrids were monodispersed solid microspheres from the coalescence of small particles. About 3.7% of the phthalocyanine polymer was incorporated into the resulting hybrids. Then the hybrids as nanofillers in polyarylene ether nitriles (PEN) were investigated. The scanning electron microscopy (SEM) investigations showed that the addition of the hybrids exhibited better dispersion and compatibility with PEN matrix than that of Fe₃O₄ nanoparticles. The mechanical properties and thermal stability of PEN/hybrid Fe₃O₄ nanocomposites had a significant improvement. Vibrating sample magnetometer (VSM) results showed that the prepared PEN nanocomposites presented soft magnetic properties. PEN nanocomposites filled with hybrid Fe₃O₄ nanoparticles exhibited higher saturation magnetization than that of Fe₃O₄ nanoparticles. The saturation magnetization (Mₛ) of the PEN/hybrid Fe₃O₄ nanocomposites increased with the increase of the hybrids and the Mₛ along the parallel and perpendicular direction were close to each other. These results were due to the better dispersion of the hybrids and the interfacial bonding between the hybrids and the surrounding matrix.