Dispersion optimization of exfoliated graphene nanoplatelet in polyetherimide nanocomposites: Extrusion, precoating, and solid state ball milling

Huang Wu, Brian Rook, Lawrence T. Drzal

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Abstract

Polyetherimide (PEId) nanocomposites reinforced with exfoliated graphite (graphene) nanoplatelets (GNP) were fabricated by various processing methods to achieve good dispersion including: melt-extrusion, precoating, solid state ball milling (SSBM) as well as combinations of these methods. As a result of the precoating approach, the electrical conductivity is greatly increased with a percolation threshold as low as 2 wt% as compared to 10 wt% for melt-extrusion, with the cost of lower mechanical properties. SSBM was investigated as an alternative process to enhance dispersion, adhesion and to reduce GNP size. High electrical conductivity and improved modulus were achieved by this approach. Further improvements to the mechanical properties could be made by combining the extrusion and SSBM approaches. Examination of the nanocomposite morphology explains the effect of these combined compounding approaches on GNP particle dispersion and their relation to the improved GNP/PEId nanocomposite performance. POLYM. COMPOS., 2013. © 2013 Society of Plastics Engineers

LanguageEnglish (US)
Pages426-432
Number of pages7
JournalPolymer Composites
Volume34
Issue number3
DOIs
StatePublished - Mar 2013

Profile

Polyetherimides
Graphite
Ball milling
Graphene
Extrusion
Nanocomposites
Mechanical properties
Adhesion
Plastics
Engineers
polyetherimide
Processing
Costs
Electric Conductivity

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry
  • Ceramics and Composites
  • Chemistry(all)

Cite this

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title = "Dispersion optimization of exfoliated graphene nanoplatelet in polyetherimide nanocomposites: Extrusion, precoating, and solid state ball milling",
abstract = "Polyetherimide (PEId) nanocomposites reinforced with exfoliated graphite (graphene) nanoplatelets (GNP) were fabricated by various processing methods to achieve good dispersion including: melt-extrusion, precoating, solid state ball milling (SSBM) as well as combinations of these methods. As a result of the precoating approach, the electrical conductivity is greatly increased with a percolation threshold as low as 2 wt{\%} as compared to 10 wt{\%} for melt-extrusion, with the cost of lower mechanical properties. SSBM was investigated as an alternative process to enhance dispersion, adhesion and to reduce GNP size. High electrical conductivity and improved modulus were achieved by this approach. Further improvements to the mechanical properties could be made by combining the extrusion and SSBM approaches. Examination of the nanocomposite morphology explains the effect of these combined compounding approaches on GNP particle dispersion and their relation to the improved GNP/PEId nanocomposite performance. POLYM. COMPOS., 2013. {\circledC} 2013 Society of Plastics Engineers",
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N2 - Polyetherimide (PEId) nanocomposites reinforced with exfoliated graphite (graphene) nanoplatelets (GNP) were fabricated by various processing methods to achieve good dispersion including: melt-extrusion, precoating, solid state ball milling (SSBM) as well as combinations of these methods. As a result of the precoating approach, the electrical conductivity is greatly increased with a percolation threshold as low as 2 wt% as compared to 10 wt% for melt-extrusion, with the cost of lower mechanical properties. SSBM was investigated as an alternative process to enhance dispersion, adhesion and to reduce GNP size. High electrical conductivity and improved modulus were achieved by this approach. Further improvements to the mechanical properties could be made by combining the extrusion and SSBM approaches. Examination of the nanocomposite morphology explains the effect of these combined compounding approaches on GNP particle dispersion and their relation to the improved GNP/PEId nanocomposite performance. POLYM. COMPOS., 2013. © 2013 Society of Plastics Engineers

AB - Polyetherimide (PEId) nanocomposites reinforced with exfoliated graphite (graphene) nanoplatelets (GNP) were fabricated by various processing methods to achieve good dispersion including: melt-extrusion, precoating, solid state ball milling (SSBM) as well as combinations of these methods. As a result of the precoating approach, the electrical conductivity is greatly increased with a percolation threshold as low as 2 wt% as compared to 10 wt% for melt-extrusion, with the cost of lower mechanical properties. SSBM was investigated as an alternative process to enhance dispersion, adhesion and to reduce GNP size. High electrical conductivity and improved modulus were achieved by this approach. Further improvements to the mechanical properties could be made by combining the extrusion and SSBM approaches. Examination of the nanocomposite morphology explains the effect of these combined compounding approaches on GNP particle dispersion and their relation to the improved GNP/PEId nanocomposite performance. POLYM. COMPOS., 2013. © 2013 Society of Plastics Engineers

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