文献类型：期刊文献

英文题名：Electrorheological properties of new mesoporous material with conducting polypyrrole in mesoporous silica

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

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

年份：2006

卷号：94

期号：1-3

起止页码：193

外文期刊名：MICROPOROUS AND MESOPOROUS MATERIALS

收录：;EI(收录号：20063310062613);WOS:【SCI-EXPANDED(收录号:WOS:000240279200025)】；

语种：英文

外文关键词：mesoporous material; MCM-41; polypyrrole; electrorheological fluid; dielectric properties

摘要：In this study, a new mesoporous material with semiconducting polypyrrole (PPy) encapsulated in the channels of mesoporous silica (MCM-41) was synthesized and used as dispersed phase for electrorheological (ER) fluids. Rheological and dielectric properties of PPyMCM-41 based suspensions were investigated with the conclusion that PPy-MCM-41 fluid exhibits better ER behavior than that without PPy. The static yield stress of 10 wt.% PPy-MCM-41 fluid as a function of applied electric field strength shows two different slopes depending on the electric field strength. Furthermore, the dielectric spectra indicate that encapsulated PPy increases the interfacial polarizability of mesoporous material and induces a higher ER effect. (c) 2006 Elsevier Inc. All rights reserved.