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An effect of carbonization on the electrorheology of poly(p- phenylenediamine)

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dc.title An effect of carbonization on the electrorheology of poly(p- phenylenediamine) en
dc.contributor.author Plachý, Tomáš
dc.contributor.author Sedlačík, Michal
dc.contributor.author Pavlínek, Vladimír
dc.contributor.author Morávková, Zuzana
dc.contributor.author Hajná, Milena
dc.contributor.author Stejskal, Jaroslav
dc.relation.ispartof Carbon
dc.identifier.issn 0008-6223 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2013
utb.relation.volume 63
dc.citation.spage 187
dc.citation.epage 195
dc.type article
dc.language.iso en
dc.publisher Elsevier, Ltd. en
dc.identifier.doi 10.1016/j.carbon.2013.06.070
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S0008622313005915
dc.description.abstract Particles of poly(p-phenylenediamine) were synthesized by the oxidation of p-phenylenediamine with ammonium peroxydisulfate at two oxidation levels. They were carbonized at 200-800 C in inert atmosphere and subsequently tested in electrorheological (ER) suspensions. Scanning electron microscopy, Raman spectroscopy and thermogravimetric analysis were used to characterize an influence of the carbonization on the molecular structure and particles size and shape. Subsequently, ER suspensions were prepared by mixing polymer particles and silicone oil. In order to determine an effect of carbonization on the ER behaviour, a number of rheological measurements under various external electric fields were carried out. Dielectric spectroscopy was used for the evaluation of the influence of particles carbonization on the ER performance of suspensions as well. Although the particles carbonized at 600 C exhibited nearly the same ER effect as the original particles due to significantly higher specific surface area, the efficiency of ER performance was the highest for original, i.e. non-carbonized particles. This is due to lower field-off viscosity in comparison to ER fluids based on carbonized particles. © 2013 Elsevier Ltd. All rights reserved. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1003458
utb.identifier.obdid 43870497
utb.identifier.scopus 2-s2.0-84881609617
utb.identifier.wok 000324845400021
utb.identifier.coden CRBNA
utb.source d-wok
dc.date.accessioned 2013-08-30T21:55:21Z
dc.date.available 2013-08-30T21:55:21Z
utb.contributor.internalauthor Plachý, Tomáš
utb.contributor.internalauthor Sedlačík, Michal
utb.contributor.internalauthor Pavlínek, Vladimír
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