文献类型：期刊文献

英文题名：Structural and electrorheological properties of mesoporous silica modified with triethanolamine

作者：Cheng, Qilin[1,2];Pavlinek, Vladimir[1];He, Ying[2];Lengalova, Anezka[1];Li, Chunzhong[2];Saha, Petr[1]

机构：[1]Tomas Bata Univ Zlin, Ctr Polymer, Fac Technol, Zlin 76272, Czech Republic;[2]E China Univ Sci & Technol, Key Lab Ultrafine Mat Minist Edu, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2008

卷号：318

期号：1-3

起止页码：169

外文期刊名：COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS

收录：;EI(收录号：20081211157994);WOS:【SCI-EXPANDED(收录号:WOS:000255623000018)】；

语种：英文

外文关键词：mesoporous silica; triethanolamine; electrorheological fluid; dielectric properties

摘要：In this work, mesoporous silica (MCM-41) was modified by triethanolamine (TEA) by a wet impregnation method. The structure and morphology of modified MCM-41 particles were characterized by X-ray diffraction, N-2 adsorption/desorption, Fourier-transform infrared spectra, scanning electron microscopy, particle size analyzer and thermogravimetric analysis. The results show that the interior channels of MCM-41 are modified by TEA without destroying its mesoporous structure. Further, pure MCM-41 and TEA-modified particles were adopted as dispersed phase in silicone oil for electrorheological (ER) investigation. The TEA-MCM-41 (modified with 7 wt.% TEA)-based ER fluid with a volume fraction of 5% exhibits stronger ER activity than pure MCM-41 fluid. The possible mechanism related to dielectric properties is also provided. (C) 2007 Elsevier B.V. All rights reserved.