کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
593363 1453937 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization and electrorheological response of silica/titania-coated MWNTs synthesized by sol–gel process
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Characterization and electrorheological response of silica/titania-coated MWNTs synthesized by sol–gel process
چکیده انگلیسی


• We synthesized the silica/titania coated MWNTs by sol–gel polymerization.
• The permittivity of the MWNTs can be controlled by the coating materials.
• ER properties were well correlated to permittivity of shell material.
• Two kinds of core/shell nano-particles showed possibility for ER fluids.

Silica or titania uniformly coated multi-walled carbon nanotubes (MWNTs) were fabricated using the tetraethyl orthosilicate (TEOS) or titanium butoxide (TBT) for the application of electrorheological (ER) fluids. The electrorheological and dielectric properties of the two different core/shell nano-tube based ER fluids were measured using rheometer and impedance analyzer. The titania-coated MWNTs ER fluids have shown higher static yield stress as well as dynamic viscoelastic properties compared to the silica-coated MWNTs ER fluids under external electric field. The silica or titania-coated MWNTs ER fluids have shown high permittivity and short relaxation time of interfacial polarization in the dielectric spectra measurement. It was found that the permittivity and electrical conductivity of the MWNTs can be controlled by coating with either the silica or titania onto the functionalized MWNTs.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 436, 5 September 2013, Pages 354–362
نویسندگان
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