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Open AccessArticle

A Facile Strategy to Enhance the Dielectric and Mechanical Properties of MWCNTs/PVDF Composites with the Aid of MMA-co-GMA Copolymer

1
Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, Changchun University of Technology, Changchun 130012, China
2
Key Laboratory of Automobile Materials, College of Materials Science & Engineering, Jilin University, Changchun 130025, China
*
Authors to whom correspondence should be addressed.
Materials 2018, 11(3), 347; https://doi.org/10.3390/ma11030347
Received: 18 January 2018 / Revised: 11 February 2018 / Accepted: 22 February 2018 / Published: 27 February 2018
A facile strategy is adopted to prepare carboxylic functionalized multiwalled carbon nanotube (c-MWCNT) modified high dielectric constant (high-k) poly(vinylidene fluoride) (PVDF) composites with the aid of methyl methacrylate-co-glycidyl methacrylate copolymer (MG). The MG is miscible with PVDF and the epoxy groups of the copolymer can react with the carboxylic groups of c-MWCNT, which induce the uniform dispersion of c-MWCNT and a form insulator layer on the surface of c-MWCNT. The c-MWCNTs/MG/PVDF composites with 8 vol % c-MWCNT present excellent dielectric properties with high dielectric constant (~448) and low dielectric loss (~2.36) at the frequency of 1 KHz, the dielectric loss is much lower than the c-MWCNT/PVDF composites without MG. The obvious improvement in dielectric properties ascribes to the existence of MG, which impede the direct contact of c-MWCNTs and PVDF and avoid the formation of conductive network. Therefore, we propose a practical and simple strategy for preparing composites with excellent dielectric properties, which are promising for applications in electronics devices. View Full-Text
Keywords: poly(vinylidene fluoride); MMA-co-GMA copolymer; dielectric constant; dielectric loss; dispersion poly(vinylidene fluoride); MMA-co-GMA copolymer; dielectric constant; dielectric loss; dispersion
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Song, S.; Xia, S.; Jiang, S.; Lv, X.; Sun, S.; Li, Q. A Facile Strategy to Enhance the Dielectric and Mechanical Properties of MWCNTs/PVDF Composites with the Aid of MMA-co-GMA Copolymer. Materials 2018, 11, 347.

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