Effects of dispersion surfactants on the properties of ceramic – carbon nanotube (CNT) nanocomposites

Fawad Inam; Andrew Heaton; Peter Brown; Ton Peijs; Michael Reece

doi:10.1016/j.ceramint.2013.06.031

Effects of dispersion surfactants on the properties of ceramic – carbon nanotube (CNT) nanocomposites

Fawad Inam, Andrew Heaton, Peter Brown, Ton Peijs, Michael Reece

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77 Citations (Scopus)

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Abstract

Gum Arabic (GA), Sodium Dodecyl Sulfate (SDS) and their mixture were used for the dispersion of multi-walled carbon nanotubes (CNTs) in an alumina matrix. A good dispersion at low loadings (0.5-1 wt%) of CNTs in alumina was achieved by an ultrasonic bath treatment. Dispersions were evaluated by UV-vis spectroscopy and agglomerate size analysis. The mixture of GA and SDS produced good dispersion as compared to GA and SDS alone. Nanocomposite powders were sintered by Spark Plasma Sintering (SPS). Microstructural, electrical and mechanical characterizations of sintered discs were carried out to evaluate the effectiveness of the different dispersants. The mixture of GA and SDS produced homogeneous and agglomerate-free CNT-alumina nanocomposites with higher electrical conductivity and indentation fracture toughness as compared to nanocomposites prepared using GA and SDS alone.

Original language	English
Pages (from-to)	511-516
Journal	Ceramics International
Volume	40
Issue number	1
Early online date	17 Jun 2013
DOIs	https://doi.org/10.1016/j.ceramint.2013.06.031
Publication status	Published - Jan 2014

Keywords

Carbon nanotubes
ceramic-matrix composites (CMCs)
electrical properties
fracture toughness
sintering

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10.1016/j.ceramint.2013.06.031

CI - Fawad Inam - May 2013Accepted author manuscript, 494 KB

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title = "Effects of dispersion surfactants on the properties of ceramic – carbon nanotube (CNT) nanocomposites",

abstract = "Gum Arabic (GA), Sodium Dodecyl Sulfate (SDS) and their mixture were used for the dispersion of multi-walled carbon nanotubes (CNTs) in an alumina matrix. A good dispersion at low loadings (0.5-1 wt\%) of CNTs in alumina was achieved by an ultrasonic bath treatment. Dispersions were evaluated by UV-vis spectroscopy and agglomerate size analysis. The mixture of GA and SDS produced good dispersion as compared to GA and SDS alone. Nanocomposite powders were sintered by Spark Plasma Sintering (SPS). Microstructural, electrical and mechanical characterizations of sintered discs were carried out to evaluate the effectiveness of the different dispersants. The mixture of GA and SDS produced homogeneous and agglomerate-free CNT-alumina nanocomposites with higher electrical conductivity and indentation fracture toughness as compared to nanocomposites prepared using GA and SDS alone.",

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AU - Inam, Fawad

AU - Heaton, Andrew

AU - Brown, Peter

AU - Peijs, Ton

AU - Reece, Michael

PY - 2014/1

Y1 - 2014/1

N2 - Gum Arabic (GA), Sodium Dodecyl Sulfate (SDS) and their mixture were used for the dispersion of multi-walled carbon nanotubes (CNTs) in an alumina matrix. A good dispersion at low loadings (0.5-1 wt%) of CNTs in alumina was achieved by an ultrasonic bath treatment. Dispersions were evaluated by UV-vis spectroscopy and agglomerate size analysis. The mixture of GA and SDS produced good dispersion as compared to GA and SDS alone. Nanocomposite powders were sintered by Spark Plasma Sintering (SPS). Microstructural, electrical and mechanical characterizations of sintered discs were carried out to evaluate the effectiveness of the different dispersants. The mixture of GA and SDS produced homogeneous and agglomerate-free CNT-alumina nanocomposites with higher electrical conductivity and indentation fracture toughness as compared to nanocomposites prepared using GA and SDS alone.

AB - Gum Arabic (GA), Sodium Dodecyl Sulfate (SDS) and their mixture were used for the dispersion of multi-walled carbon nanotubes (CNTs) in an alumina matrix. A good dispersion at low loadings (0.5-1 wt%) of CNTs in alumina was achieved by an ultrasonic bath treatment. Dispersions were evaluated by UV-vis spectroscopy and agglomerate size analysis. The mixture of GA and SDS produced good dispersion as compared to GA and SDS alone. Nanocomposite powders were sintered by Spark Plasma Sintering (SPS). Microstructural, electrical and mechanical characterizations of sintered discs were carried out to evaluate the effectiveness of the different dispersants. The mixture of GA and SDS produced homogeneous and agglomerate-free CNT-alumina nanocomposites with higher electrical conductivity and indentation fracture toughness as compared to nanocomposites prepared using GA and SDS alone.

KW - Carbon nanotubes

KW - ceramic-matrix composites (CMCs)

KW - electrical properties

KW - fracture toughness

KW - sintering

UR - https://www.scopus.com/pages/publications/84887624643

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DO - 10.1016/j.ceramint.2013.06.031

M3 - Article

SN - 0272-8842

VL - 40

SP - 511

EP - 516

JO - Ceramics International

JF - Ceramics International

IS - 1

ER -

Effects of dispersion surfactants on the properties of ceramic – carbon nanotube (CNT) nanocomposites

Abstract

Keywords

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