Dry coating polymer powder particles with deagglomerated carbon nanotubes to improve their dispersion in nanocomposites

Document Type

Article

Publication Date

9-10-2008

Abstract

Deagglomerated multi-walled carbon nanotubes (MWCNTs) were dry coated onto the surfaces of polyethylene oxide powder particles by magnetic assisted impact coater (MAIC). The deagglomeration of the tightly agglomerated MWCNTs was carried out using two procedures: rapid expansion of supercritical suspension (RESS) of MWCNTs and CO2, and high-intensity ultrasonic agitation of a suspension of MWCNTs in acetone, using an ultrasonic probe. FESEM images show that the high-intensity ultrasonic probe was more effective in deagglomerating the agglomerated MWCNTs than the RESS method. Furthermore, it was found that the extent of PEO particle surface coverage by MWCNTs greatly depends on the extent of deagglomeration. © 2007 Elsevier B.V. All rights reserved.

Identifier

49549100253 (Scopus)

Publication Title

Powder Technology

External Full Text Location

https://doi.org/10.1016/j.powtec.2007.12.004

ISSN

00325910

First Page

206

Last Page

212

Issue

3

Volume

186

Grant

EEC-0540855

Fund Ref

National Science Foundation

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