✦ LIBER ✦

Influence of Carbon Nanofiber Network Variability on the AC Conductivity of Polyetherimide Composite Films

✍ Scribed by Bin Li; Wei-Hong Zhong

Publisher: John Wiley and Sons
Year: 2010
Tongue: English
Weight: 293 KB
Volume: 295
Category: Article
ISSN: 1438-7492
DOI: 10.1002/mame.200900291

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✦ Synopsis

Abstract

A pronounced and distinctive increase in the conductivity of polyetherimide nanocomposite films containing CNF agglomerates is reported. It is demonstrated that a variation of the CNF network can have a dramatic effect on the AC conductivity of PEI composites. The effect is found in composites containing relatively large and strongly entangled CNF agglomerates, and it is suggested that is is due to a new mechanism of electrical conduction. The observed behavior may reveal the distinctive response of electrons in strongly entangled CNF networks in polymer films to an AC field in contrast to a DC field, and could also result in a negative dielectric response.

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