Journal
JOURNAL OF MATERIOMICS
Volume 6, Issue 2, Pages 348-354Publisher
ELSEVIER
DOI: 10.1016/j.jmat.2019.10.001
Keywords
Polypyrrole; Composite films; Random coil; Negative permittivity
Funding
- Ministry of Science and Technology of China through 973-project [2015CB654601]
- National Nature Science Foundation of China [51902167]
- K.C. Wong Magna Fund in Ningbo University
- Key Laboratory of Engineering Dielectrics and Its Application (Harbin University of Science and Technology), Ministry of Education
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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. (C) 2019 The Chinese Ceramic Society. Production and hosting by Elsevier B.V.
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