Electrorheological and magnetorheological response of polypyrrole/magnetite nanocomposite particles

Magnetic nanoparticles of magnetite (Fe 3 O 4 ) were synthesized within a conducting polypyrrole (PPY) matrix using a facile method, and employed as both electrorheological (ER) and magnetorheological (MR) materials to provide a well dispersed suspension of either ER or MR fluids. The PPY to Fe 3 O...

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Bibliographic Details
Published in:Colloid and polymer science 2013-07, Vol.291 (7), p.1781-1786
Main Authors: Fang, Fei Fei, Liu, Ying Dan, Choi, Hyoung Jin
Format: Article
Language:English
Subjects:
Applied sciences
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Composites
Cross-disciplinary physics: materials science
rheology
Electro- and magnetorheological fluids
Exact sciences and technology
Food Science
Forms of application and semi-finished materials
Magnetite
Magnetorheological fluids
Material types
Nanocomposites
Nanomaterials
Nanostructure
Nanotechnology and Microengineering
Physical Chemistry
Physics
Polymer industry, paints, wood
Polymer Sciences
Polypyrroles
Rheology
Rheometers
Rotational
Short Communication
Soft and Granular Matter
Technology of polymers
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Summary:Magnetic nanoparticles of magnetite (Fe 3 O 4 ) were synthesized within a conducting polypyrrole (PPY) matrix using a facile method, and employed as both electrorheological (ER) and magnetorheological (MR) materials to provide a well dispersed suspension of either ER or MR fluids. The PPY to Fe 3 O 4 weight ratio was adjusted to 5 % to avoid possible deterioration of the magnetic properties of the Fe 3 O 4 particles. Transmission electron microscopy and X-ray diffraction provided information on the structure and particle size of the PPY/Fe 3 O 4 . Both ER and MR performance of pure Fe 3 O 4 and PPY/Fe 3 O 4 nanocomposites were examined through rotational and oscillatory tests using a rotational rheometer under an applied electric and magnetic field, respectively, demonstrating typical ER and MR characteristics.
ISSN:0303-402X
1435-1536
DOI:10.1007/s00396-013-2913-1