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A unique strategy towards high dielectric constant and low loss with multiwall carbon nanotubes anchored onto graphene oxide sheets

Biswas, Sourav and Kar, Goutam Prasanna and Arora, Deepshikha and Bose, Suryasarathi (2015) A unique strategy towards high dielectric constant and low loss with multiwall carbon nanotubes anchored onto graphene oxide sheets. In: RSC ADVANCES, 5 (31). pp. 24132-24138.

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Official URL: http://dx.doi.org/10.1039/c4ra15885g

Abstract

Multiwall carbon nanotubes (MWNTs) were anchored onto graphene oxide sheets (GOs) via diazonium and C-C coupling reactions and characterized by spectroscopic and electron microscopic techniques. The thus synthesized MWNT-GO hybrid was then melt mixed with 50/50 polyamide6-maleic anhydride-modified acrylonitrile-butadiene-styrene (PA6-mABS) blend to design materials with high dielectric constant (30) and low dielectric loss. The phase morphology was studied by SEM and it was observed that the MWNT-GO hybrid was selectively localized in the PA6 phase of the blend. The 30 scales with the concentration of MWNT-GO in the blends, which interestingly showed a very low dielectric loss (< 0.2) making them potential candidate for capacitors. In addition, the dynamic storage modulus scales with the fraction of MWNT-GO in the blends, demonstrating their reinforcing capability as well.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND
Keywords: ACRYLONITRILE-BUTADIENE-STYRENE; CO-CONTINUOUS BLENDS; CRYSTALLIZATION BEHAVIOR; REACTIVE COMPATIBILIZER; CAPACITOR APPLICATIONS; PERCOLATION-THRESHOLD; POLYMER COMPOSITES; PHASE MISCIBILITY; PA6/ABS BLENDS; NANOCOMPOSITES
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Id for Latest eprints
Date Deposited: 24 Apr 2015 06:17
Last Modified: 24 Apr 2015 06:17
URI: http://eprints.iisc.ac.in/id/eprint/51403

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