Issue 13, 2015

Magnetite–polypyrrole core–shell structured microspheres and their dual stimuli-response under electric and magnetic fields

Abstract

Polypyrrole (PPy)–coated magnetite (Fe3O4) hybrid particles were synthesized under sonication. PPy was coated on the surface of Fe3O4 microspheres, whereas pyrrole monomers filled the interior of the Fe3O4 particles and were then polymerized. The structure of the Fe3O4–PPy microspheres was confirmed by transmission electron microscopy. The electric and magnetic properties were confirmed by optical microscopy and vibrating sample magnetometry, respectively. The suspension of the Fe3O4–PPy composite microspheres dispersed in silicone oil exhibited both electrorheological and magnetorheological properties when measured using a rotational rheometer under an applied electric and magnetic field, respectively.

Graphical abstract: Magnetite–polypyrrole core–shell structured microspheres and their dual stimuli-response under electric and magnetic fields

Article information

Article type
Paper
Submitted
02 Jan 2015
Accepted
08 Feb 2015
First published
11 Feb 2015

J. Mater. Chem. C, 2015,3, 3150-3158

Magnetite–polypyrrole core–shell structured microspheres and their dual stimuli-response under electric and magnetic fields

D. E. Park, H. S. Chae, H. J. Choi and A. Maity, J. Mater. Chem. C, 2015, 3, 3150 DOI: 10.1039/C5TC00007F

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