Effect of carbon nanotube pre-treatment on dispersion and electrical properties of melt mixed multi-walled carbon nanotubes/poly(methyl methacrylate) composites

Ki Park Won; Hyun Kim Jung; Sang Soo Lee; Junkyung Kim; Geon Woong Lee; Min Park

doi:10.1007/bf03219053

Effect of carbon nanotube pre-treatment on dispersion and electrical properties of melt mixed multi-walled carbon nanotubes/poly(methyl methacrylate) composites

Ki Park Won, Hyun Kim Jung, Sang Soo Lee, Junkyung Kim, Geon Woong Lee, Min Park

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

52 Citations (Scopus)

Abstract

Multi-walled carbon nanotubes (MWNTs) pre-treated by concentrated mixed acid or oxidized at high temperature were melt mixed with poly(methyl methacrylate) (PMMA) using a twin screw extruder. The morphologies and electrical properties of the MWNT/PMMA composites were investigated. The thermally treated MWNTs (t-MWNTs) were well dispersed, whereas the acid treated MWNTs (a-MWNTs) were highly entangled, forming large-sized clusters. The resulting electrical properties of the composites were analyzed in terms of the carbon nanotube (CNT) dispersion. The experimental percolation threshold was estimated to be 3 wt% of t-MWNTs, but no percolation occurred at similar concentrations in the a-MWNT composites, due to the poor dispersion in the matrix.

Original language	English
Pages (from-to)	206-211
Number of pages	6
Journal	Macromolecular Research
Volume	13
Issue number	3
DOIs	https://doi.org/10.1007/bf03219053
Publication status	Published - 2005 Jun

Keywords

Acid treatment
CNT/polymer composites
Carbon nanotubes
Electrical conductivity
Melt mixing
Thermal treatment

ASJC Scopus subject areas

General Chemical Engineering
Organic Chemistry
Polymers and Plastics
Materials Chemistry

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10.1007/bf03219053

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title = "Effect of carbon nanotube pre-treatment on dispersion and electrical properties of melt mixed multi-walled carbon nanotubes/poly(methyl methacrylate) composites",

abstract = "Multi-walled carbon nanotubes (MWNTs) pre-treated by concentrated mixed acid or oxidized at high temperature were melt mixed with poly(methyl methacrylate) (PMMA) using a twin screw extruder. The morphologies and electrical properties of the MWNT/PMMA composites were investigated. The thermally treated MWNTs (t-MWNTs) were well dispersed, whereas the acid treated MWNTs (a-MWNTs) were highly entangled, forming large-sized clusters. The resulting electrical properties of the composites were analyzed in terms of the carbon nanotube (CNT) dispersion. The experimental percolation threshold was estimated to be 3 wt% of t-MWNTs, but no percolation occurred at similar concentrations in the a-MWNT composites, due to the poor dispersion in the matrix.",

keywords = "Acid treatment, CNT/polymer composites, Carbon nanotubes, Electrical conductivity, Melt mixing, Thermal treatment",

author = "Won, {Ki Park} and Jung, {Hyun Kim} and Lee, {Sang Soo} and Junkyung Kim and Lee, {Geon Woong} and Min Park",

year = "2005",

month = jun,

doi = "10.1007/bf03219053",

language = "English",

volume = "13",

pages = "206--211",

journal = "Macromolecular Research",

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publisher = "Polymer Society of Korea",

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T1 - Effect of carbon nanotube pre-treatment on dispersion and electrical properties of melt mixed multi-walled carbon nanotubes/poly(methyl methacrylate) composites

AU - Won, Ki Park

AU - Jung, Hyun Kim

AU - Lee, Sang Soo

AU - Kim, Junkyung

AU - Lee, Geon Woong

AU - Park, Min

PY - 2005/6

Y1 - 2005/6

N2 - Multi-walled carbon nanotubes (MWNTs) pre-treated by concentrated mixed acid or oxidized at high temperature were melt mixed with poly(methyl methacrylate) (PMMA) using a twin screw extruder. The morphologies and electrical properties of the MWNT/PMMA composites were investigated. The thermally treated MWNTs (t-MWNTs) were well dispersed, whereas the acid treated MWNTs (a-MWNTs) were highly entangled, forming large-sized clusters. The resulting electrical properties of the composites were analyzed in terms of the carbon nanotube (CNT) dispersion. The experimental percolation threshold was estimated to be 3 wt% of t-MWNTs, but no percolation occurred at similar concentrations in the a-MWNT composites, due to the poor dispersion in the matrix.

AB - Multi-walled carbon nanotubes (MWNTs) pre-treated by concentrated mixed acid or oxidized at high temperature were melt mixed with poly(methyl methacrylate) (PMMA) using a twin screw extruder. The morphologies and electrical properties of the MWNT/PMMA composites were investigated. The thermally treated MWNTs (t-MWNTs) were well dispersed, whereas the acid treated MWNTs (a-MWNTs) were highly entangled, forming large-sized clusters. The resulting electrical properties of the composites were analyzed in terms of the carbon nanotube (CNT) dispersion. The experimental percolation threshold was estimated to be 3 wt% of t-MWNTs, but no percolation occurred at similar concentrations in the a-MWNT composites, due to the poor dispersion in the matrix.

KW - Acid treatment

KW - CNT/polymer composites

KW - Carbon nanotubes

KW - Electrical conductivity

KW - Melt mixing

KW - Thermal treatment

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U2 - 10.1007/bf03219053

DO - 10.1007/bf03219053

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SN - 1598-5032

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JO - Macromolecular Research

JF - Macromolecular Research

IS - 3

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Effect of carbon nanotube pre-treatment on dispersion and electrical properties of melt mixed multi-walled carbon nanotubes/poly(methyl methacrylate) composites

Abstract

Keywords

ASJC Scopus subject areas

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