文献类型：期刊文献

英文题名：Synthesis and Structural and Electrical Characteristics of Polypyrrole Nanotube/TiO2 Hybrid Composites

作者：Luo, Meifang[1];He, Ying[1];Cheng, Qilin[1,2];Li, Chunzhong[1]

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

年份：2010

卷号：49

期号：3

起止页码：419

外文期刊名：JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS

收录：;EI(收录号：20101912917625);WOS:【SCI-EXPANDED(收录号:WOS:000277550300002)】；

基金：This work was supported by the Special Projects for Key Laboratories in Shanghai (07DZ22016), the Special Projects for Nanotechnology of Shanghai (0752 nm010, 0852nm02000), and the Program of Shanghai Subject Chief Scientist (08XD1401500). The authors also wish to thank to the Ministry of Education, Youth and Sports of the Czech Republic (MSM 7088352101) and Grant Agency of the Czech Republic (202/06/0419) for financial support.

语种：英文

外文关键词：electrical properties; electrorheological fluid; polypyrrole nanotubes; TiO2 nanoparticles

摘要：Hybrid composites of conducting polypyrrole nanotubes with TiO2 nanoparticles were synthesized in the presence of -naphthalenesulfonic acid by chemical oxidative polymerization. The morphology, structure, and electrical properties were investigated by several experimental techniques. The results indicated that the structural and electrical properties of the composites were influenced by the content of TiO2 nanoparticles. The DC conductivity of the composites increased by one order of magnitude when the concentration of TiO2 was 0.1 M compared with pure PPy nanotubes. AC conductivity of the composites showed the similar trend with the TiO2 content and obeyed the power law index in the 101-107 Hz range. The electrorheological properties of the composite under steady and oscillatory shear were also evaluated.