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首页> 外文期刊>Journal of industrial and engineering chemistry >Synthesis and electrorheological characteristics of titanate nanotube suspensions under oscillatory shear
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Synthesis and electrorheological characteristics of titanate nanotube suspensions under oscillatory shear

机译：振荡剪切下钛酸酯纳米管悬浮液的合成及流变特性

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In this study, titanate nanotubes (TNTs) were synthesized by hydrothermal treatment of TiO2 powders (P25) in a NaOH solution. The as-synthesized TNTs exhibit high surface area and large aspect ratio. Rheological properties of TNTs suspensions were then investigated under oscillatory shear. The TNTs fluid shows the viscoelastic behavior and the dynamic moduli (G', G") increase significantly by about 4 orders of magnitude as the electric field strength is up to 2.0 kV/mm. Transient response under dynamic shear reveals different changes in the microstructure of TNTs fluid from steady shear. The complex modulus of TNTs fluids is sensitive to temperature while that of P25 fluid become insensitive at higher temperature. Dynamic viscoelastic behavior suggests that structure of P25 to TNTs transition merits the enhancement of ER activity of TNTs fluid.
机译：在这项研究中，通过在NaOH溶液中对TiO2粉末（P25）进行水热处理，合成了钛酸酯纳米管（TNT）。合成后的TNT具有高表面积和大长径比。然后在振荡剪切下研究了TNTs悬浮液的流变特性。随着电场强度达到2.0 kV / mm，TNTs流体表现出粘弹性和动态模量（G'，G“）显着增加约4个数量级。动态剪切作用下的瞬态响应揭示了微观结构的不同变化TNTs流体的剪切模量对温度敏感，而P25流体的复数模量在较高温度下变得不敏感，动态粘弹性行为表明P25向TNTs的转变有利于TNTs流体的ER活性的增强。

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