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Viscoelastic properties of electrorheological suspensions of core-shell (carbon/polyaniline) particles in silicone oil

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dc.title Viscoelastic properties of electrorheological suspensions of core-shell (carbon/polyaniline) particles in silicone oil en
dc.contributor.author Sedlačík, Michal
dc.contributor.author Almajdalawi, Shawqi
dc.contributor.author Mrlík, Miroslav
dc.contributor.author Pavlínek, Vladimír
dc.contributor.author Sáha, Petr
dc.contributor.author Stejskal, Jaroslav
dc.relation.ispartof 13th International Conference on Electrorheological Fluids and Magnetorheological Suspensions (ERMR2012)
dc.identifier.issn 1742-6588 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2013
utb.relation.volume 412
dc.event.title 13th International Conference on Electrorheological Fluids and Magnetorheological Suspensions (ERMR)
dc.event.location Ankara
utb.event.state-en Turkey
utb.event.state-cs Turecko
dc.event.sdate 2012-07-02
dc.event.edate 2012-07-06
dc.type conferenceObject
dc.language.iso en
dc.publisher IOP Publishing, Ltd. en
dc.identifier.doi 10.1088/1742-6596/412/1/012006
dc.relation.uri http://iopscience.iop.org/1742-6596/412/1/012006/
dc.description.abstract Carbon/polyaniline particles with core-shell structure were synthesized as a novel dispersed phase for electrorheological (ER) suspensions in this study. Core of these composite particles was obtained by carbonization of polyaniline base in an inert atmosphere of nitrogen at 650 degrees C and then coated with polyaniline shell. The morphology and composition of prepared particles were examined with scanning electron microscopy and Fourier transform infrared spectroscopy, respectively. The analysis revealed the conversion of polyaniline to carbon via ring-opening happened during the carbonization process and successful coating of carbonized particles with shell layer. The products retained the original granular structure after carbonization as well as after the coatings. The dielectric spectra analysis suggests high particle polarizability of carbonized material. Thus, the measurements performed under oscillatory shear flow showed a remarkably high ER intensity at relatively low electric field strengths. Coating of carbonized particles by polyaniline base changes compatibility of particle surface with silicone oil medium and, consequently, flow properties of suspensions in the absence of electric field, but does not influence the shear rate dependence of the complex viscosity in the electric field. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1003236
utb.identifier.obdid 43870484
utb.identifier.scopus 2-s2.0-84875752042
utb.identifier.wok 000317122500006
utb.source d-wok
dc.date.accessioned 2013-05-22T11:53:08Z
dc.date.available 2013-05-22T11:53:08Z
dc.rights.access openAccess
utb.contributor.internalauthor Sedlačík, Michal
utb.contributor.internalauthor Almajdalawi, Shawqi
utb.contributor.internalauthor Mrlík, Miroslav
utb.contributor.internalauthor Pavlínek, Vladimír
utb.contributor.internalauthor Sáha, Petr
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