Three-dimensional micro structured nanocomposite beams by microfluidic infiltration

L. L. Lebel, Brahim Aissa, O. A. Paez, M. A. El Khakani, D. Therriault

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Three-dimensional (3D) micro structured beams reinforced with a single-walled carbon nanotube (C-SWNT)/polymer nanocomposite were fabricated using an approach based on the infiltration of 3D microfluidic networks. The 3D microfluidic network was first fabricated by the direct-write assembly method, which consists of the robotized deposition of fugitive ink filaments on an epoxy substrate, forming thereby a 3D micro structured scaffold. After encapsulating the 3D micro-scaffold structure with an epoxy resin, the fugitive ink was liquefied and removed, resulting in a 3D network of interconnected microchannels. This microfluidic network was then infiltrated by a polymer loaded with C-SWNTs and subsequently cured. Prior to their incorporation in the polymer matrix, the UV-laser synthesized C-SWNTs were purified, functionalized and dispersed into the matrix using a three-roll mixing mill. The final samples consist of rectangular beams having a complex 3D skeleton structure of C-SWNT/polymer nanocomposite fibers, adapted to offer better performance under flexural solicitation. Dynamic mechanical analysis in flexion showed an increase of 12.5% in the storage modulus compared to the resin infiltrated beams. The nanocomposite infiltration of microfluidic networks demonstrated here opens new prospects for the achievement of 3D reinforced micro structures.

Original languageEnglish
Article number125009
JournalJournal of Micromechanics and Microengineering
Volume19
Issue number12
DOIs
Publication statusPublished - 2009
Externally publishedYes

Fingerprint

Infiltration
Microfluidics
Nanocomposites
Polymers
Ink
Scaffolds
Epoxy Resins
Single-walled carbon nanotubes (SWCN)
Dynamic mechanical analysis
Microchannels
Polymer matrix
Epoxy resins
Resins
Elastic moduli
Microstructure
Fibers
Lasers
Substrates

ASJC Scopus subject areas

  • Mechanical Engineering
  • Electrical and Electronic Engineering
  • Mechanics of Materials
  • Electronic, Optical and Magnetic Materials

Cite this

Three-dimensional micro structured nanocomposite beams by microfluidic infiltration. / Lebel, L. L.; Aissa, Brahim; Paez, O. A.; El Khakani, M. A.; Therriault, D.

In: Journal of Micromechanics and Microengineering, Vol. 19, No. 12, 125009, 2009.

Research output: Contribution to journalArticle

Lebel, L. L. ; Aissa, Brahim ; Paez, O. A. ; El Khakani, M. A. ; Therriault, D. / Three-dimensional micro structured nanocomposite beams by microfluidic infiltration. In: Journal of Micromechanics and Microengineering. 2009 ; Vol. 19, No. 12.
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