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Polypyrrole random-coil induced permittivity from negative to positive in all-organic composite films

Polypyrrole random-coil induced permittivity from negative to positive in all-organic composite films

Authors :
Peng Wang
Zhongbin Pan
Mingkun Wang
Shuangwu Huang
Jinjun Liu
Jiwei Zhai
Source :
Journal of Materiomics, Vol 6, Iss 2, Pp 348-354 (2020)
Publication Year :
2020
Publisher :
Elsevier, 2020.

Abstract

Percolating composites with negative permittivity can be promising candidates for metamaterials. Herein, novel all-organic composite films containing of random coil polypyrrole (PPy) and poly(vinylidene fluoride) (PVDF) are fabricated via a solution casting method. The random coil PPy is prepared by oxidative template assembly approach for the first time. The experimental result indicates that the negative permittivity is easily adjusted through controlling the random coil PPy contents. Especially, the random coil PPy contents exceeded 7 wt% the negative permittivity appear attributed to the formation of 3D interconnected PPy network. This facile approach not only opens a new way to preparing negative permittivity of all-organic composite films, but also points out a route to facilitate the practical applications of metamaterials. Keywords: Polypyrrole, Composite films, Random coil, Negative permittivity

Details

Language :
English
ISSN :
23528478
Volume :
6
Issue :
2
Database :
Directory of Open Access Journals
Journal :
Journal of Materiomics
Publication Type :
Academic Journal
Accession number :
edsdoj.3bc4064aef1248048fa8797c667730f4
Document Type :
article
Full Text :
https://doi.org/10.1016/j.jmat.2019.10.001