Fabrication of self-assembled polyaniline tubes and their electrorheological characteristics
Fabrication of self-assembled polyaniline tubes and their electrorheological characteristics
复制标题
DOI：
10.1016/j.colsurfa.2017.07.063
复制
发表时间：
2017-10
期刊：
影响因子：
--
通讯作者：
G. Lim;H. Choi
中科院分区：
文献类型：
--
作者：
G. Lim;H. Choi
以柠檬酸为掺杂酸，有机掺杂酸与苯胺单体摩尔比为1:4，通过化学软模板技术自组装制备出具有矩形形状的聚苯胺（PANI）纳米管（NT）颗粒。通过扫描电子显微镜和透射电子显微镜观察了PANI NT的形貌，并通过FT-IR光谱和X射线衍射测试了其化学结构。将PANI NT悬浮在硅油中进行电流变（ER）表征，并通过光学显微镜直接观察其高度极化特性引起的感应电场下的纤颤现象。使用旋转流变仪测试了它们在不同电场下的流变行为，显示出随着输入电场强度的增加，ER效应增加。介电谱的频率依赖性也可以使用 LCR 计获得，并且与 ER 效应密切相关。
Polyaniline (PANI) nanotube (NT) particles possessing a rectangular shape were fabricated by self-assembly via a chemical soft template technique with citric acid as the dopant acid at an organic dopant acid to aniline monomer molar ratio of 1:4. Morphology of the PANI NTs was examined by scanning electron microscope and transmission electron microscope, while their chemical structure was tested by FT-IR spectroscopy and X-ray diffraction. PANI NTs were suspended in silicone oil for electrorheological (ER) characterization, and their fibrillation phenomenon under an induced electric field caused by their highly polarizable characteristics was observed directly by an optical microscope. Their rheological behaviors under different electric fields were tested using a rotational rheometer, exhibiting increased ER effects with an input electrical field strength. Frequency dependence of the dielectric spectra was also obtained using a LCR meter and well related with the ER effect.