Iranian Nanotechnology Society International Journal of Nanoscience and Nanotechnology 1735-7004 8 1 2012 03 01 In Situ Chemical Oxidative Graft Polymerization of Aniline from Fe3O4 Nanoparticles 51 60 3926 EN M. Hatamzadeh Polymer Laboratory, Faculty of Chemistry, Payame Noor University, Tabriz, I. R. Iran M. Johari-Ahar Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, I. R. Iran M. Jaymand Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, I. R. Iran Journal Article 2011 12 12 This study aims at exploring an effective route in the in situ graft polymerization of aniline from Fe3O4 nanoparticles. To this goal, Fe3O4 magnetic nanoparticles were prepared by coprecipitation method using ammonia solution as the precipitating agent, and were characterized by Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD) and transmission electron microscopy (TEM). Thereafter, polyaniline  (PANI) grafted magnetite nanoparticles were successfully synthesized by the in situ chemical oxidative polymerization of aniline monomer by ammonium peroxodisulfate (APS) from the surfaces of the aminopropyl magnetite nanoparticles with a dispersion polymerization method. The chemical grafting of polyaniline from magnetite nanoparticles were confimed by using FT-IR, ultraviolet-visible (UV-Vis) spectroscopy and thermogravimetric analysis (TGA), and also the dispersion state of Fe3O4 nanoparticles in the polyaniline matrix was examined by TEM. In comparison to the pure polyaniline, the polyaniline/Fe3O4 nanocomposite shows to have higher decomposition temperature. https://www.ijnnonline.net/article_3926_4fc28b7093b135c21c7183ac07e928a6.pdf