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Synthesis and Electrorheological Activity of Nanosized Particles of Hybrid Material Silica / Cetylpyridinium Chloride

Published online by Cambridge University Press:  31 January 2011

Evguenia Korobko ,
Tatyana Kouznetsova ,
Zoya Novikova ,
Natalia Bedik  and
Mikalai Zhurauski
Evguenia Korobko
Affiliation:
evkorobko@gmail.com, Heat and Mass Transfer Institute, Laboratory of rheophysics and macrokinetics, Minsk, Belarus
Tatyana Kouznetsova
Affiliation:
kouzn@igic.bas-net.by, Institute of General and Inorganic Chemistry, Laboratory of adsorbents and adsorptive processes, Minsk, Belarus
Zoya Novikova
Affiliation:
srgor@hmti.ac.by, Heat and Mass Transfer Institute, Laboratory of rheophysics and macrokinetics, Minsk, Belarus
Natalia Bedik
Affiliation:
nbedik@mail.ru, Heat and Mass Transfer Institute, Laboratory of rheophysics and macrokinetics, Minsk, Belarus
Mikalai Zhurauski
Affiliation:
mikalai.zhur@tut.by, Heat and Mass Transfer Institute, Laboratory of rheophysics and macrokinetics, Minsk, Belarus
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Abstract

Hybrid organic-inorganic nanocomposite silica with surfactant � cetylpyridinium chloride with the polyphase structure, having a high electrorheological activity, is synthesized using sol-gel method. Physical-mechanical characteristics of dispersions based on mineral oil and synthesized powder with the concentration of 20 and 30 % by weight are investigated. The results of the shear stress measurements versus the strength of the dc and ac (frequency 50 Hz) electric fields (0 � 3.5 kV/mm) at Couette shear (shear rate 8 � 390 s) and yield stress in the range of temperatures 20 � 97 �C are presented. The comparative analysis of the results obtained with the results for the powder of the hybrid organic-inorganic nanocomposite silica/ polyethylene glycol is carried out.

Keywords

sol-gelelectrical propertiesfluid
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1173: Symposium U – Electrofluidic Materials and Applications–Micro/Biofluidics, Electrowetting and Electrospinning , 2009 , 1173-U04-03
Copyright
Copyright © Materials Research Society 2009

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