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  Evaluating the performance of citric acid as stabilizer and doping agent in an environment friendly approach to prepare electromagnetic nanocomposite particles

Debnath, M. K., Rahman, M. A., Tauer, K., Minami, H., Rahman, M. M., Gafur, M. A., et al. (2018). Evaluating the performance of citric acid as stabilizer and doping agent in an environment friendly approach to prepare electromagnetic nanocomposite particles. Polymer Composites, 39(12), 4628-4636. doi:10.1002/pc.24577.

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 Urheber:
Debnath, Mithun Kumar, Autor
Rahman, Mohammad Abdur, Autor
Tauer, Klaus1, Autor           
Minami, Hideto, Autor
Rahman, Mohammad Mahbubor, Autor
Gafur, Mohammad Abdul, Autor
Ahmad, Hasan, Autor
Affiliations:
1Klaus Tauer, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863320              

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 Zusammenfassung: The objective of this investigation is to find a less‐expensive and less‐toxic environmentally benign route for the preparation of magnetic PANI nanocomposite particles. For this citric acid, a weak organic tricarboxylic acid has been used during seeded chemical oxidative polymerization of aniline in presence of variable amounts of Fe3O4 nanoparticles. Nanosized Fe3O4 particles are first prepared by co‐precipitation of Fe2+ and Fe3+ from their alkaline solutions. Then in the second step, magnetic nanocomposite particles—named as Fe3O4/PANI—are prepared by seeded chemical oxidative polymerization of aniline using ammonium persulfate (APS) as oxidant. Independent of Fe3O4 content, Fe3O4/PANI nanocomposite particles possessed comparable high electrical conductivity having the same magnitude as HCl‐doped PANI particles (2.13 × 10−3 S/cm). This result suggested that addition of citric acid during seeded chemical oxidative polymerization not only promoted solubilization of aniline but also functioned as stabilizer and doping agent. Iron oxide content critically influenced the stability, morphology, and magnetic properties of the produced nanocomposite particles. The saturation magnetization and magnetic susceptibility increased with the increase of Fe3O4 content. The nanocomposite particles prepared with core/shell ratio of 0.6/1 (w/w) exhibited the strongest paramagnetism and aligned into fiber‐like structure. The analysis of electromagnetic properties and spectral data from FTIR, X‐ray diffraction (XRD), X‐ray photoelectron spectroscopy (XPS), and thermogravimetry (TG) confirmed the complete coverage of Fe3O4 nanoparticles by PANI layer.

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Sprache(n): eng - English
 Datum: 2017-09-062018
 Publikationsstatus: Erschienen
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 Identifikatoren: DOI: 10.1002/pc.24577
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Titel: Polymer Composites
  Alternativer Titel : Polym. Compos.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Bethel, Connecticut : Society of Plastics Engineers
Seiten: - Band / Heft: 39 (12) Artikelnummer: - Start- / Endseite: 4628 - 4636 Identifikator: ISSN: 0272-8397