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

被引：13
|
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
来源：
SMART MATERIALS AND STRUCTURES | 2011年 / 20卷 / 06期
基金：
中国国家自然科学基金;
关键词：
SUSPENSIONS; PARTICLES;
D O I：
10.1088/0964-1726/20/6/065014
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
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.
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页数：6
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