Reversible viscosity change of nanotubular colloidal aqueous suspensions responding to an electric field
Reversible viscosity change of nanotubular colloidal aqueous suspensions responding to an electric field
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DOI：
10.1016/j.colsurfa.2014.06.035
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发表时间：
2014-10-05
影响因子：
5.2
通讯作者：
Kimura, Hiroshi
中科院分区：
文献类型：
--
作者：
Shikinaka, Kazuhiro;Kimura, Hiroshi
伊毛缟石 (IG) 是一种完美的刚性无机纳米管状聚电解质，显示出良好的水分散性，特别是在中性或较低 pH 条件下，并提供含有单丝和细束的溶液。在这封信中，我们提出了 IG 水悬浮液响应电场的可逆粘度变化。在8.0 V/mm电场和19 s(-1)剪切速率下，IG水悬浮液(体积分数0.001)的剪切应力达到0.14 Pa。施加电场会扰乱IG的双电层，从而使它们组装成厚束并增加悬浮液的粘度。 (C) 2014 Elsevier B.V. 保留所有权利。
Imogolite (IG), a perfect rigid inorganic nanotubular polyelectrolyte, shows good water dispersibility, particularly at neutral or lower pH, and affords solutions containing monofilaments and thin bundles. In this letter, we present reversible viscosity change of IG aqueous suspension responding to an electric field. The shear stress of the IG aqueous suspension (with a volume fraction 0.001) reaches 0.14 Pa under an 8.0 V/mm electric field and 19 s(-1) shear rate. Application of an electric field would disturb the electric double layer of the IGs that affords their assembling in thick bundles and increases the viscosity of the suspension. (C) 2014 Elsevier B.V. All rights reserved.