Abstract
Metacomposites, composite materials exhibiting negative permittivity, represent an opportunity to create materials with depressed plasmon frequency without the need to create complex structural geometries. Although many reports exist on the synthesis and characterizations of metacomposites, very few have ventured into exploring possible applications that could take advantage of the unique electrical properties of these materials. In this article, we report on the chemiresistive properties of a polymer-CNT metacomposite and explore how these are affected by Argon plasma treatment.
Highlights
In recent years, several reports have surfaced regarding various nanocomposite materials exhibiting a negative permittivity of significantly high magnitude [1,2]
We report on the chemiresistive properties of PANI/multi-walled carbon nanotube (MWCNT) nanocomposite doped with anionic biopolymer iota-carrageenan (IC) exhibiting a negative permittivity
Argon non-thermal plasma surface treatment was performed on the IC/PANI/MWCNT (ICPM) metacomposite, and its effects were analyzed by Raman spectroscopy
Summary
Several reports have surfaced regarding various nanocomposite materials exhibiting a negative permittivity of significantly high magnitude [1,2]. The term metacomposites has been introduced to describe these unique nanocomposites with negative permittivity, which are promising candidates for applications such as super lenses, wave filters, remote aerospace applications, and superconductors. Among these reports, it was observed that the negative permittivity and the plasmon frequency observed in conductive polymer nanocomposites (PNCs) can be tuned by changing the filler loading levels, the ratio of oxidant to the monomer and nanofiller morphologies. Argon non-thermal plasma surface treatment was performed on the IC/PANI/MWCNT (ICPM) metacomposite, and its effects were analyzed by Raman spectroscopy. Characterization of the electrical properties of the ICPM was performed before and after plasma treatment, and its effects on the chemiresistive properties and the plasmon frequency were investigated
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