文献类型：期刊文献

英文题名：Template-free synthesis of hollow poly(o-anisidine) microspheres and their electrorheological characteristics

作者：Cheng, Qilin[1,2];Pavlinek, Vladimir[2];He, Ying[1,2];Yan, Yanfang[1];Li, Chunzhong[1];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, Ctr Polymer Syst, Ctr Polymer, Zlin 76001, Czech Republic

年份：2011

卷号：20

期号：6

外文期刊名：SMART MATERIALS AND STRUCTURES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000290957800014)】；

基金：This work was supported by the National Natural Science Foundation of China (20925621), the Special Projects for Nanotechnology of Shanghai (1052nm02300, 0952nm02000, 0952nm02100), the Shanghai Pujiang Program (09PJ1403200), the Program of Shanghai Subject Chief Scientist (08XD1401500) and the Fundamental Research Funds for the Central Universities (WD1013014). The authors also wish to thank to the Ministry of Education, Youth and Sports of the Czech Republic (MSM 7088352101) and the Grant Agency of the Czech Republic (202/09/1626) for financial support. This article was created with support of Operational Program Research and Development for Innovations co-funded by the European Regional Development Fund (ERDF) and the national budget of the Czech Republic, within the framework of the project Centre of Polymer Systems (reg. number: CZ.1.05/2.1.00/3.0111).

语种：英文

摘要：Hollow poly(o-anisidine) (POA) microspheres were synthesized by chemical oxidation polymerization using a template-free method. The structure and morphology were characterized by SEM, TEM and FT-IR. The results indicate that the diameter of the hollow spheres is around 1 mu m and hollow POA shows a similar chemical structure to the granular form. The rheological properties of suspensions of hollow POA microspheres and granular POA particles were investigated under both steady and oscillatory shear with the application of electric fields. It was found that a suspension of hollow POA microspheres showed typical electrorheological (ER) behavior under an applied electric field, but exhibited lower ER activity than a granular POA suspension despite its higher stability. The lower ER performance of the POA suspension could be attributed to its weaker interfacial polarization as revealed by dielectric analysis.