文献类型：期刊文献

英文题名：Electrorheological characteristics of polyaniline/titanate composite nanotube suspensions

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

机构：[1]Tomas Bata Univ, Ctr Polymer, Fac Technol, TGM 275, Zlin 76272, Czech Republic;[2]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China

年份：2009

卷号：287

期号：4

起止页码：435

外文期刊名：COLLOID AND POLYMER SCIENCE

收录：;EI(收录号：20091412009625);WOS:【SCI-EXPANDED(收录号:WOS:000264261800007)】；

基金：This work was supported by the Ministry of Education, Youth and Sports of the Czech Republic (MSM 7088352101) and the Grant Agency of the Czech Republic (202/06/0419). The authors also wish to thank to the National Natural Science Foundation of China (20236020), the National High Technology Research and Development Program of China (2006AA03Z358), and 973 Program (2004CB719500) for their financial support.

语种：英文

外文关键词：Electrorheological fluid; Polyaniline; Titanate nanotubes; Nanocomposite; Dielectric properties

摘要：In this paper, one-dimensional polyaniline/titanate (PANI/TN) composite nanotubes were synthesized by in situ chemical oxidative polymerization directed by block copolymer. These novel nanocomposite particles were used as a dispersed phase in electrorheological (ER) fluids, and the ER properties were investigated under both steady and dynamic shear. It was found that the ER activity of PANI/TN fluids varied with the ratio of aniline to titanate, and the PANI/TN suspensions showed a higher ER effect than that made by sphere-like PANI/TiO2 nanoparticles. These observations were well interpreted by their dielectric spectra analysis; a larger dielectric loss enhancement and a faster rate of interfacial polarization were responsible for a higher ER activity of nanotubular PANI/TN-based fluids.