Acidified multi-wall carbon nanotubes/polyaniline composites with high negative permittivity

作者：Yao, Xiuchao; Kou, Xuechen; Qiu, Jun^*

来源：Organic Electronics, 2016, 38: 55-60.

DOI：10.1016/j.orgel.2016.07.033

• Negative permittivity
• MWCNTs-COOH
• PANI
• Nano wires
• Composites

Acidified multi-wall carbon nanotubes (MWCNTs-COOH) have been synthesized using mixed acid acidification, and then acidified multi-wall carbon nanotubes (MWCNTs-COOH)/polyaniline (PANI) composites with negative permittivity have been successfully synthesized by in situ polymerization. At the same time, the effects of composition and structure on the permittivity of MWCNTs-COOH/PANI composites have been systematically studied. The effects of MWCNTs-COOH content on the generation and variation of negative permittivity are illuminated by the structure model of "nano wires". XRD analysis indicates that MWCNTs-COOH becomes the crystal nucleus and affects the crystallinity of the MWCNTs-COOH/PANI composites. SEM results indicate that different contents of MWCNTs-COOH cause various dispersion states of MWCNTs-COOH, thus lead to different morphologies of MWCNTs-0001-1/PANI composites and variation of permittivity.

• 出版日期2016-11
• 单位同济大学