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Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites
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Giant Permittivity Polymer Nanocomposites Obtained by Curing a Direct Emulsion
Alan Luna1, Jinkai Yuan1, Wilfrid Néri1
1Centre de Recherches Paul Pascal, Université Bordeaux 1 , 115 Avenue Schweitzer, Pessac 33600, France.
Langmuir : the ACS Journal of Surfaces and Colloids
|October 20, 2015
Summary
Near-percolated carbon nanotube (CNT) polymer composites achieve giant permittivity over 20,000 at 100 Hz with low conductivity. This breakthrough addresses the challenge of balancing high permittivity and low loss in advanced materials.
Area of Science:
- Materials Science
- Polymer Science
- Nanotechnology
Background:
- Near-percolated carbon nanotube (CNT)-polymer composites show potential as high-permittivity materials.
- A key challenge is achieving high permittivity with low dielectric loss across relevant frequencies.
Purpose of the Study:
- To develop CNT-polymer composites with enhanced dielectric properties.
- To overcome the trade-off between high permittivity and low loss.
Main Methods:
- Utilized an emulsion approach to fabricate the composites.
- Optimized droplet size and curing procedures for material synthesis.
Main Results:
- Achieved unprecedented dielectric performance in the CNT-polymer composites.
- Measured a giant permittivity exceeding 20,000 at 100 Hz.
- Maintained low conductivity below 10^-4 S/m.
Conclusions:
- The developed emulsion method enables high-performance CNT-polymer composites.
- These materials offer a promising solution for high-permittivity applications with low energy loss.
