Fabrication of polyaniline coated iron oxide hybrid particles and their dual stimuli-response under electric and magnetic fields
| Autor: | H. J. Choi, H. S. Chae, B. Sim |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Fabrication Polymers and Plastics Polyaniline General Chemical Engineering Iron oxide Nanotechnology lcsh:Chemical technology Condensed Matter::Materials Science chemistry.chemical_compound lcsh:TA401-492 Materials Chemistry lcsh:TP1-1185 Physical and Theoretical Chemistry Nanocomposite Magnetorheological Polyaniline nanofibers Organic Chemistry Magnetic field Stimulus response Condensed Matter::Soft Condensed Matter chemistry Electrorheological lcsh:Materials of engineering and construction. Mechanics of materials Smart polymers |
| Zdroj: | eXPRESS Polymer Letters, Vol 9, Iss 8, Pp 736-743 (2015) |
| ISSN: | 1788-618X |
| DOI: | 10.3144/expresspolymlett.2015.68 |
| Popis: | Polyaniline (PANI)-coated iron oxide (Fe3O4) sphere particles were fabricated and applied to a dual stimuliresponsive material under electric and magnetic fields, respectively. Sphere Fe3O4 particles were synthesized by a solvothermal process and protonated after acidification. The aniline monomer tended to surround the surface of the Fe3O4 core due to the electrostatic and hydrogen bond interactions. A core-shell structured product was finally formed by the oxidation polymerization of PANI on the surface of Fe3O4. The formation of Fe3O4@PANI particles was examined by scanning electron microscope and transmission electron microscope. The bond between Fe3O4 and PANI was confirmed by Fourier transform-infrared spectroscope and magnetic properties were analyzed by vibration sample magnetometer. A hybrid of a conducting and magnetic particle-based suspension displayed dual stimuli-response under electric and magnetic fields. The suspension exhibited typical electrorheological and magnetorheological behaviors of the shear stress, shear viscosity and dynamic yield stress, as determined using a rotational rheometer. Sedimentation stability was also compared between Fe3O4 and Fe3O4@PANI suspension. |
| Databáze: | OpenAIRE |
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