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Synthesis and field-responsive properties of SrTiO3 nanoparticle/polymer hybrid

Published online by Cambridge University Press:  31 January 2011

Junji Umeda ,
Wataru Sakamoto  and
Toshinobu Yogo
Toshinobu Yogo*
Affiliation:
Division of Nanomaterials Science, EcoTopia Science Institute, Nagoya University, Furo-cho, Chikusaku, Nagoya 464-8603, Japan
*
a) Address all correspondence to this author. e-mail: yogo@esi.nagoya-u.ac.jp
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Abstract

Nanocrystalline strontium titanate (SrTiO3) particle/polymer hybrid was synthesized from metal–organics and 2-(methacryloyloxy)ethyl maleate (MMEM). SrTiO3 precursor was prepared from strontium isopropoxide and titanium isopropoxide in 2-methoxyethanol. Nanocrystalline SrTiO3 particle/poly-MMEM hybrid was formed by hydrolysis followed by reaction with MMEM. The crystallinity of SrTiO3 particles depended on the amount of water for hydrolysis. The nanocrystalline particles were identified to be strontium titanate by x-ray diffraction. Fourier transform infrared spectroscopy and x-ray photoelectron spectroscopy showed the presence of the chemical bond between SrTiO3 particles and the organic matrix. The fluid consisting of SrTiO3 particle/poly-MMEM and silicone oil revealed a yield stress dependent on various conditions, such as hydrolysis conditions and applied field. The hybridization was found to have a pronounced effect on the electrorheological properties of the nanoparticle/polymer-based system.

Keywords

Chemical synthesisCompositeNanoscale
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 7 , July 2009 , pp. 2221 - 2228
Copyright
Copyright © Materials Research Society 2009

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