Novel synthesis of core-shell urchin-like ZnO coated carbonyl iron microparticles and their magnetorheological activity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F14%3A43871346" target="_blank" >RIV/70883521:28610/14:43871346 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1039/c3ra44982c" target="_blank" >http://dx.doi.org/10.1039/c3ra44982c</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c3ra44982c" target="_blank" >10.1039/c3ra44982c</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Novel synthesis of core-shell urchin-like ZnO coated carbonyl iron microparticles and their magnetorheological activity

Popis výsledku v původním jazyce

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, dueto 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 ofthe 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 t

Název v anglickém jazyce

Novel synthesis of core-shell urchin-like ZnO coated carbonyl iron microparticles and their magnetorheological activity

Popis výsledku anglicky

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, dueto 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 ofthe 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 t

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

RSC Advances: an international journal to further the chemical sciences

ISSN

2046-2069

e-ISSN

—

Svazek periodika

4

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

996-1003

Kód UT WoS článku

000327849700065

EID výsledku v databázi Scopus

—