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dc.title | Novel synthesis of core-shell urchin-like ZnO coated carbonyl iron microparticles and their magnetorheological activity | en |
dc.contributor.author | Machovský, Michal | |
dc.contributor.author | Mrlík, Miroslav | |
dc.contributor.author | Kuřitka, Ivo | |
dc.contributor.author | Pavlínek, Vladimír | |
dc.contributor.author | Babayan, Vladimir Artur | |
dc.relation.ispartof | RSC Advances | |
dc.identifier.issn | 2046-2069 Scopus Sources, Sherpa/RoMEO, JCR | |
dc.date.issued | 2014 | |
utb.relation.volume | 4 | |
utb.relation.issue | 2 | |
dc.citation.spage | 996 | |
dc.citation.epage | 1003 | |
dc.type | article | |
dc.language.iso | en | |
dc.publisher | Royal Society of Chemistry (RSC) | en |
dc.identifier.doi | 10.1039/c3ra44982c | |
dc.relation.uri | http://pubs.rsc.org/en/content/articlelanding/2014/ra/c3ra44982c#!divAbstract | |
dc.description.abstract | The overall stability (thermo-oxidation, sedimentation) of MR suspensions is a crucial problem decreasing their potential applicability in real life. In this study the unique functional coating of carbonyl iron (CI) particles with ZnO structures was presented in order to develop a new MR suspension based on the core-shell ZnO/CI urchin-like dispersed particles. The two-step synthesis provides the suitable core-shell particles with improved sedimentation and also thermo-oxidation stability. Moreover, due to the enhanced sedimentation stability core-shell based suspensions exhibit higher values of the yield stress than those of bare CI based suspensions at 20 wt% particle concentration. The suspension with 60 wt% particle concentration reaches values of the yield stress around 2.2 kPa at 272 mT. The excellent MR efficiency of the core-shell ZnO/CI based suspension at elevated temperatures was observed. Finally, the dimorphic particle based suspension was prepared when the ratio between the carbonyl iron and core-shell urchin-like particles was 1:1. The highest yield stress was obtained in the case of a dimorphic particle-based suspension due to the good magnetic properties of the bare carbonyl iron and mechanical gripping between core-shell ZnO/CI urchin-like particles. This journal is © The Royal Society of Chemistry 2014. | en |
utb.faculty | University Institute | |
utb.faculty | Faculty of Technology | |
dc.identifier.uri | http://hdl.handle.net/10563/1003587 | |
utb.identifier.obdid | 43871554 | |
utb.identifier.scopus | 2-s2.0-84889584901 | |
utb.identifier.wok | 000327849700065 | |
utb.identifier.coden | RSCAC | |
utb.source | j-scopus | |
dc.date.accessioned | 2013-12-30T12:31:16Z | |
dc.date.available | 2013-12-30T12:31:16Z | |
dc.rights.access | openAccess | |
utb.ou | Centre of Polymer Systems | |
utb.contributor.internalauthor | Machovský, Michal | |
utb.contributor.internalauthor | Mrlík, Miroslav | |
utb.contributor.internalauthor | Kuřitka, Ivo | |
utb.contributor.internalauthor | Pavlínek, Vladimír | |
utb.contributor.internalauthor | Babayan, Vladimir Artur |