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

Kwabena A. Narh; Ahmed Tijani Agwedicham; Laila Jallo

doi:10.1016/j.powtec.2007.12.004

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

Kwabena A. Narh, Ahmed Tijani Agwedicham, Laila Jallo

Mechanical and Industrial Engr

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

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.

Original language	English (US)
Pages (from-to)	206-212
Number of pages	7
Journal	Powder Technology
Volume	186
Issue number	3
DOIs	https://doi.org/10.1016/j.powtec.2007.12.004
State	Published - Sep 10 2008

All Science Journal Classification (ASJC) codes

General Chemical Engineering

Keywords

Agglomeration
Carbon nanotubes
Deagglomeration
Dry coating

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10.1016/j.powtec.2007.12.004

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title = "Dry coating polymer powder particles with deagglomerated carbon nanotubes to improve their dispersion in nanocomposites",

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.",

keywords = "Agglomeration, Carbon nanotubes, Deagglomeration, Dry coating",

author = "Narh, {Kwabena A.} and Agwedicham, {Ahmed Tijani} and Laila Jallo",

note = "Funding Information: The authors gratefully acknowledge partial funding for this work from National Science Foundation (NSF) award EEC-0552587 to ATA and from NSF award EEC-0540855 to LJ. The authors would like to thank Prof. Rajesh Dave for insightful discussions regarding the RESS deagglomeration of MWCNTs and subsequent dry coating by MAIC. The authors also thank Daniel To for performing RESS deagglomeration experiments.",

year = "2008",

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doi = "10.1016/j.powtec.2007.12.004",

language = "English (US)",

volume = "186",

pages = "206--212",

journal = "Powder Technology",

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AU - Narh, Kwabena A.

AU - Agwedicham, Ahmed Tijani

AU - Jallo, Laila

N1 - Funding Information: The authors gratefully acknowledge partial funding for this work from National Science Foundation (NSF) award EEC-0552587 to ATA and from NSF award EEC-0540855 to LJ. The authors would like to thank Prof. Rajesh Dave for insightful discussions regarding the RESS deagglomeration of MWCNTs and subsequent dry coating by MAIC. The authors also thank Daniel To for performing RESS deagglomeration experiments.

PY - 2008/9/10

Y1 - 2008/9/10

N2 - 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.

AB - 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.

KW - Agglomeration

KW - Carbon nanotubes

KW - Deagglomeration

KW - Dry coating

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M3 - Article

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SN - 0032-5910

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SP - 206

EP - 212

JO - Powder Technology

JF - Powder Technology

IS - 3

ER -

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

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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