Issue 22, 2015

CNT aggregation mechanisms probed by electrical and dielectric measurements

Abstract

Aggregation of carbon nanotubes in silicone oil was studied by electrical and dielectric measurements. The use of a liquid medium allowed us to slowly dilute and precisely vary the filler contents. With this method, the percolation thresholds were measured with a great accuracy. The filler aggregation process was also probed as a function of time, showing a decrease in the percolation threshold over time after agitation was stopped. In contrast with previous studies on dynamic percolation, in a liquid medium a progressive separation between fillers and matrices is evidenced at a long time. In addition, no permittivity divergence was measured at the transition, this also results from the liquid nature of the matrix.

Graphical abstract: CNT aggregation mechanisms probed by electrical and dielectric measurements

Article information

Article type
Paper
Submitted
11 Mar 2015
Accepted
02 May 2015
First published
06 May 2015

J. Mater. Chem. C, 2015,3, 5769-5774

Author version available

CNT aggregation mechanisms probed by electrical and dielectric measurements

B. Mathieu, C. Anthony, A. Arnaud and F. Lionel, J. Mater. Chem. C, 2015, 3, 5769 DOI: 10.1039/C5TC00692A

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